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全部话题 - 话题: soils
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f*******h
发帖数: 1269
1
来自主题: gardening版 - 偶的栀子花开了
栀子花需要酸性土壤:
Lowering the soil pH to make it more acid
If your soil needs to be more acidic, sulfur may be used to lower the pH if
it is available. To reduce the soil pH by 1.0 point, mix in 1.2 oz of ground
rock sulfur per square yard if the soil is sandy, or 3.6 oz per square yard
for all other soils. The sulfur should be thoroughly mixed into the soil
before planting. Sawdust, composted leaves, wood chips, cottonseed meal,
leaf mold and especially peat moss, will lower the soil pH.
x*********o
发帖数: 189
2
来自主题: gardening版 - 种菜应该用什么土?谢谢!
我们家有个很小的院子,去年随便种了几颗西红柿还收的不错,碰巧是heroloom的很好
吃,今年老妈就说还要种,让买点土和肥,去年是安邻居家买的四包top soil四包牛粪
,今年我自己去买的,发现top soil上写的是ideal for filling holes和提高地面用
,我就买了garden soil和牛粪,garden soil上写的是bigger and brighter flowers
and vegetables。 买回来打开老妈偏说我买错了,原来的top soil看上去就是土,这
个garden soil里面好像还有一些经过腐烂的小树皮什么的,但是明明人家写的是种花
种菜的阿,我妈说garden soil没粘性根站不住,我就觉得怪了,难道不该安说明买?
有明白的xdjm给解解惑吧,谢谢!
j*****I
发帖数: 2626
3
去umass soil test下载了表格,看到有这儿几个选项。panda可否帮忙看看我该用哪个?
A. Soil pH $5.00
Provides a simple soil pH test and an estimate of how much lime , sulfur, or
other additive is needed to correct soil pH.
B. Standard Soil Test $9.00
Provides pH, Buffer pH, Extractable Nutrients, Extractable Heavy Metals (e.g
. Lead), Cation Exchange Capacity, and Percent Base Saturation.
Recommendations for nutrient and pH adjustment are included with results.
C. Standard Soil Test $13.00 w/ Organic Matter
Same as Standard Soil
s******r
发帖数: 4749
4
来自主题: gardening版 - [合集] 玫瑰花间弄点啥好?
☆─────────────────────────────────────☆
zhanglaosan (张老三) 于 (Mon Nov 15 12:52:01 2010, 美东) 提到:
周末买了十几株玫瑰(ok, 月季)下种了,的确院子变得有生机呢。最牛的是,昨晚一
晚上就开了好多花,哈哈
不过,玫瑰和玫瑰之间还是土,貌似直接露出土面还是难看
大家在这种玫瑰间的土地上弄啥呢? ground cover野花?树皮?石子?
☆─────────────────────────────────────☆
eastfire (~~随便提高晓松) 于 (Mon Nov 15 13:09:58 2010, 美东) 提到:
土你勤浇点水自己就长出草和其他植物了:)
☆─────────────────────────────────────☆
zhanglaosan (张老三) 于 (Mon Nov 15 13:10:58 2010, 美东) 提到:
花间第一不能长草,野草难看,好草最抢肥料了。
貌似正确做法就是mulching,树皮,compost什么的
☆───... 阅读全帖
g******5
发帖数: 7923
5
来自主题: gardening版 - Houston能种桂圆树吗?
网上的:
Frost Protection Measures
Protect young frost-sensitive trees by wrapping the trunks and branches with
insulat-
ing material such as palm fronds, cornstalks, cardboard, or fiberglass.
During wet
weather, an outer covering of plastic film helps keep the insulating
materials dry, but
plastic alone provides very little frost protection. Cover the trunks from
the ground
level up to the main branches. Keep the ground around the trees as clean and
as free
from mulch, weeds, and ground cover as po... 阅读全帖
f*1
发帖数: 837
6
来自主题: gardening版 - 新人请教草坪
总算知道legender是男是女了:-)
自从膝盖受伤后,就几乎不打球了。
It is good that what you have is Bermudagrass, as sometimes people say it is
virtually indestructable. I highly recommend that you follow what's
described here in the "Bermuda Bible". If you don't understand some terms
or procedures, feel free to ask here.
http://aroundtheyard.com/the-news/71-bermuda-bible.html
I don't know anything about lawn service companies, as I have never used
them so I can't judge. But it wouldn't hurt to hear what others say about... 阅读全帖
y*****8
发帖数: 18140
7
“学会种菜比拿个学位都难”,哈哈!
标准放低一点,开个菜地种点菜也没有那么难。当初我家就是放了top soil/garden
soil/cow manure 各1/3, 胡乱混在一起就种了
你一开始就全部用很贵的garden soil的话,暂时可以不加许多肥 许多粪~~~

表土是top soil是不是,周末看了一下这个颜色好像比garden soil浅,garden oil好
黑,,如果garden bed里全部用garden soil的话,牛粪马粪鸡粪是一块放还是选一种
呀?还要再加compost吗?定期只加flower and vegetable plant food行吗?一定要每
种菜弄一种a-b-c那种不同数字的肥吗?
我怎么觉得学会种菜比拿个学位都难,那么多soil,那么多肥,那么多粪~~~

发帖数: 1
8
参考来自: https://www.bayeradvanced.com/articles/what-to-know-before-you-
grow-fruit
What To Know Before You Grow Fruit
In gardening, fruit trees yield an excellent return on investment. A semi-
dwarf apple tree with a harvest life of 15 to 20 years can yield up to 500
apples per growing season. If you average production costs for homegrown
apples over 10 years, the apples cost roughly a penny apiece – a definite
discount over organic store-bought apples. Plant different fruit trees with
different h... 阅读全帖
g**1
发帖数: 10330
9
来自主题: Military2版 - 貌似辐射越来越严重了
专家说超400倍都对健康没影响。
昨天报的是20KM超1000倍,对身体还是没影响。
http://www3.nhk.or.jp/daily/english/22_35.html
High radiation detected 40km from nuclear plant
Japan's science ministry says radiation exceeding 400 times the normal
level was detected in soil about 40 kilometers from the troubled
Fukushima Daiichi nuclear power plant.
The ministry surveyed radioactive substances in soil about 5 centimeters
below the surface at roadsides on Monday.
The ministry found 43,000 becquerels of radioactive iodine-131 per
kilog... 阅读全帖
f*1
发帖数: 837
10
来自主题: Living版 - 烦死人的草坪
Yes, there are the Take-All Root Rot and the Pythium Root Rot, both can
happen to warm season grass like centipedegrass.
One thing you can try is to ask your nearest Cooperative Extension Service
Office to identify the disease. You can start from here:
http://www.csrees.usda.gov/Extension/
I suggest you search for "centipede maintenance" and read articles from the
.edu domain. This way, you'll have a very good idea about what you should
and shouldn't do to centigedegrass, which is kind of diff... 阅读全帖
f*1
发帖数: 837
11
It is good that you realized that you need to do some soil testing. I
highly recommend that you do soil test through some reputable labs like
Logan Labs or UMASS soil testing lab (the latter only charges $15 for a
basic test + organic matter at the moment). Then you'll be very confident
as what need to be added to your soil. Home testing kit may not be that
accurate, and if you haven't used distilled water, your pH value is
meaningless.
Don't add lime if you are not sure about your soil pH le... 阅读全帖
S*A
发帖数: 7142
12
纸上谈兵同学你好。你干嘛不老实回答一下,你没有大面积
seed 过草先。
你干嘛不说说铺那层 top soil, 你如何能保证那层 top soil 里面是干净的,
没有其他杂草和除草剂?麦杆子里面带其种子也不是什么新鲜事。
很多人载在这个 top soil 不够干净上面,而且超过几千尺的地铺 top
soil 根本就是不现实的。
什么选择都是有利和弊的,我只过指出,top soil 这个真的不是必须的。
没有 top soil 就减少被污染的机会。
发芽率低这个也不是真的,我种过,发芽率接近 100%。正确浇水就
可以了。

S*A
发帖数: 7142
13
杂草发芽比好草快多了。
你浇水不倒位就容易造成只有杂草能发芽。
你去算过如果要铺 1000 seq ft 的 top soil 需要多少土吗?
如果要覆盖1/4 inch 的 top soil. 你要搬运差不多 1000/4/12 = 27.8 cubic foot.
一个 40 lbs 的 top soil 是大概 1/2 cubic foot。 你要差不多 54 包。
重量 1 ton 左右。
计算的参数参考这里
https://answers.yahoo.com/question/index?qid=20090427075007AAYIO9b
我说了半天不是说盖了 top soil 不发芽,而是不必要。
没有必要搬运摊平这么多土。你如何撒那么多土呢?
我是帮 LZ 减少工作量和减少 top soil 里面混进其他杂草
的可能。杂草是直接毁掉一个新 seeding 的重要原因。
你自己说种过草的,你来说说你以前种过多大面积的草坪?
买了多少 top soil ? 如何撒的?如何杂草控制的?
r*******r
发帖数: 60
14
来自主题: Living版 - 完美草坪 seeding 计划和步骤
刚拿到了soil test,牛人们帮我看看吧,接下来该干嘛呢?我准备7月开始round up.9
月开始种草。我在6区。谢谢谢谢!!!
这是侧院:
Soil pH (1:1, H2O) 5.0
Modified Morgan extractable, ppm
Macronutrients
Phosphorus (P) 3.9 4-14
Potassium (K) 36 100-160
Calcium (Ca) 697 1000-1500
Magnesium (Mg) 47 50-120
Sulfur (S) 14.8 >10
Micronutrients *
Boron 0.0 0.1-0.5
Manganese (Mn) 7.5 1.1-6.3
Zinc (Zn) 13.8 1.0-7.6
Copper (Cu) 0.2 0.3-0.6
Iron (Fe) 50.2 2.7-9.4
Aluminum (Al) 209 <75
Lead (Pb) 8.3 <22
Cation Exch. Capacity, meq/100g 16.6
Exch. Acidity, meq/100g 1... 阅读全帖
n***s
发帖数: 10056
15
来自主题: Living版 - 有人种蓝莓吗?
没种过。好吃吗?
Soil: Gooseberry plants are less finicky about soil acidity than most other
small fruits, and tolerate a wide range of soils, except those that are
waterlogged. Where summers are hot, bushes will grow better and produce
better fruit in heavier soils, which retain more moisture and stay cooler. A
thick mulch of some organic material also helps keep the soil cool. Sandy
soils are less suitable for gooseberries because they dry out too fast.
S**r
发帖数: 2478
16
来自主题: SanDiego版 - 后院里的蜗牛怎么除呀?
找到了。
Using Iron Phosphate
The active ingredient in the products listed below is iron phosphate which
is an organic compound that is found naturally in the soil. If the iron
phosphate bait is not consumed by a slug, the material breaks down becoming
fertilizer for your soil.
Iron phosphate products are used the same as other bait materials. Simply
scatter the granules over the soil’s surface in the evening where snails
and slugs feed. It is not broken down by rain or watering the garden. Once
the... 阅读全帖
j****s
发帖数: 60
17
To prepare soils for growing vegetables, you do not buy “soils” (you can't
), but you add organic matter, not
fertilizers, to soils. The organic matter, sometime called soil amendments,
are something of decayed plants
(compost) or animal manures.
For existing vegetable beds, you can grow “green manures”, plants grown in
soil and then tilled back soil at
the their peak growth as organic matter. We are going to buy seeds of
crimson clover and fava bean for green
manure to our vegetable beds late
a******y
发帖数: 870
18
来自主题: gardening版 - 【新手求助】关于盆栽花用土
大家好,第一次来gardening,来前辈指教~
春天来了,用花种种了些花苗,都出齐了,这周感觉到了该transplant的时候了
打算种在盆里,买了陶土的花盆
今天跑去home depot买了:Miracle-Gro的All-purpose plant food,还搬回一大袋Gardening Soil,也是这个牌子的
plant food怎么用,上面写的挺明白的;但是发现,Gardening Soil上面居然写着“not for container”?! 是说明这个土不是给盆栽植物用的吗?
我的问题是:
1.Gardening Soil是不能用于盆栽吗?
2.如果不能,为什么?
上面写的要与local soil按1:1比例混合后使用,如果我混了放在盆子里面,可以凑合用吗?
3.是不是用了Gardening Soil,其实就不用再施plant food? 是不是plant food就是给只用local soil的植物用的?
p.s.主要想知道如果土真的买错了,怎么补救...希望不用退回去了,好大好大袋拼死命才弄回来的啊...tears...谢谢前辈们了...
f*1
发帖数: 837
19
来自主题: gardening版 - 新手求问草地,这样子的怎么整
1. It all depends on your expectations. Mine is probably a bit higher. If
by the end of the summer you feel like the grass in the backyard isn't that
bad, you can choose to do an overseeding in the fall. If there are a lot of
weeds and you don't like them, you can choose to do a renovation. For
overseeding, you may spend more time dealing with weeds before and
afterwards though.
2. Yes, the total time is 3-4 weeks. Something like applying Roundup,
watering and waiting for 2 weeks before ano... 阅读全帖
f*1
发帖数: 837
20
来自主题: gardening版 - 草地求救!!!
1. Do a soil test (e.g. Logan Labs or UMASS soil lab) and amend the soil
accordingly. If you choose to do only one thing to your lawn, this is the
one you should do.
2. Adjust the irrigation system to do deep but infrequent watering. You
have cool season grass so you shouldn't be in a very hot location. The rule
of thumb is to water 1 inch (so water gets into 4-6 inch into the soil)
once every 7 days. Depending on your soil, you may need to adjust
accordingly. But every 2 days is too much.
... 阅读全帖
y****2
发帖数: 11909
21
碰巧我看到这个,看起来更实用,只是在最热的黄金时间啥也种不了了:)
Keep in mind that the disease spores can persist in the soil for up to 20
years. If club root is present you may want to solarize the soil.*
* To solarize your soil, you must leave a clear plastic tarp on the soil
surface for 4-6 weeks during the hottest part of the year. Soil solarization
will reduce or eliminate many soil inhabiting pests including nematodes,
fungi, insects, weeds and weed seeds.
y****2
发帖数: 11909
22
碰巧我看到这个,看起来更实用,只是在最热的黄金时间啥也种不了了:)
Keep in mind that the disease spores can persist in the soil for up to 20
years. If club root is present you may want to solarize the soil.*
* To solarize your soil, you must leave a clear plastic tarp on the soil
surface for 4-6 weeks during the hottest part of the year. Soil solarization
will reduce or eliminate many soil inhabiting pests including nematodes,
fungi, insects, weeds and weed seeds.
y****n
发帖数: 3697
23
用不着那么精贵,用garden soil和top soil混合就行,
或者更便宜的办法是买那个0.05:0.05:0.05的soil (比top soil贵一点点),然后自
己混合肥料。
我对比过garden soil和这种土的质地,除了garden soil里掺了些缓释颗粒,基本没区
别。
k****n
发帖数: 3803
24
来自主题: CivilEngineering版 - [合集] 有geotech的吗,请教问题
☆─────────────────────────────────────☆
GEO (CEO) 于 (Wed Aug 22 20:47:38 2007) 提到:
为个两层的公共建筑提供基础设计参数,暂时没有确定是桩基还是浅基础。
粘土层的三轴试验是应该做固结不排水(CU)还是不固结不排水(UU)。
☆─────────────────────────────────────☆
trackbed (涮羊肉) 于 (Thu Aug 23 00:52:57 2007) 提到:
CU
☆─────────────────────────────────────☆
GEO (CEO) 于 (Thu Aug 23 10:18:11 2007) 提到:
can I ask why? any details?
☆─────────────────────────────────────☆
trackbed (涮羊肉) 于 (Thu Aug 23 14:16:05 2007) 提到:
not sure what is your concern. but for... 阅读全帖
T****r
发帖数: 22092
25
http://www3.nhk.or.jp/daily/english/23_28.html
Extremely high radiation found in soil
土壤中发现重度放射性污染
updated at 18:24 UTC, Mar. 23
Japanese authorities have detected a concentration of a radioactive subs
tance 1,600 times higher than normal in soil at a village, 40 kilometers
away from the troubled nuclear power plant in Fukushima Prefecture.
日本官方向媒体透露,在调查远离福岛核电站40公里的一个村落土壤中,已经发现
超过平常值1600倍的放射性物质。
The disaster task force in Fukushima composed of the central and local g
overnments surveyed radioact... 阅读全帖
a**e
发帖数: 8800
26
Net: 为了所谓的绿色能源,2007,在左派推动下,立法要求在汽油里加入ethanol。
O8大力推动种植玉米生产ethanol。仅仅6年,后果已经在那里了。
大面积的原始植被/湿地变成玉米地,水土流失,被化肥污染的水进入水系,甚至影响
到饮用水,流入的污染水在墨西哥湾造成大面积的死亡区,水体生物灭绝。
最有意思的地方在于,生产ethanol的前期后期要花费的能量比生产出的ethanol能产生
的能量多。
AP Investigation: Obama's green energy drive comes with an unadvertised
environmental cost
http://news.yahoo.com/secret-dirty-cost-obamas-green-051200204.
CORYDON, Iowa (AP) -- The hills of southern Iowa bear the scars of America's
push for green energy: The brown gashes where rain has washed ... 阅读全帖
l*****O
发帖数: 402
27
来自主题: Living版 - cattywh, my 2 cents... hehe
我个人认为driveway旁边不用放edge, 不过你放了, 也无所, 装饰性挺强的. 很pp.
为十么我认为你那快不要用edge呢? 是草地和driveway的界. edge的做用主要是分草地
和mulch或分
草地和soil. driveway的水泥或力青本身就起到了个edge的做用, 你再加从功能上讲是
浪费. 不过很好看.
如果是driveway和mulch的界, driveway和soil的界, 也可以用edge. edge本身是主要为
了保护里面的mulch和soil,
次要的是防止草长进去. 如果mulch和soil有坡度和高度, 可以做retaining wall.
而你那块地是没有任何mulch和soil的. 所以从功能上讲不是很需要edging.
d********a
发帖数: 9567
28
可惜了,看你費了很多力气,是好心来分享的。但是我
实在忍不住说一下,你这里有很多做法不是 best practices.
应该好好做做功课然后再动手的,例如上 bestlawn.info 上面
问清楚。
哪有夏天大太阳种新草的。
(我上边说的很清楚,夏天种不好,你是不是眼睛有毛病。我自己是砍树带种草,这个你看得懂吗?)
草籽一定要从 sod farm supply 的种子店买,一定要 sod quality
的种子。一般的 Garden 没有特别好的草籽的。
(一般跟我去的garden center有什么关系?这个是我去的garden center)
http://www.petittigardencenter.com/
而且要先看你在地区什么 Zone,决定什么种类的草,然后再去
seed store 看有什么类型,去 NTEP.ORG 查看你那个地区的 rating。
结合你个人喜好,挑适合你地区的种子。一般面向不名真相的消费
者的种子都是向便宜,快速发芽,见效快的方向优化的。一般都不是
好的种子,有好多甚至有那些一年生(annual)的种子。
(garden center本身就解... 阅读全帖
S*A
发帖数: 7142
29
我非常礼貌的反对。 soil test 非常有用的,就算你现在植物没有病,
了解你的 soil 有多肥沃,才 $20 非常值得的。不然你永远只能是猜。
你随便买错袋化肥就浪费不止这个价钱了。你叫 Gardener 帮你做这样的
test 就要 $100。然后你可以吧结果 post 到 bestlawn soil 板,听听
土神解释你的土壤就不止 $30 价值了。
做 soil test 是有百利无一害的东西。而且就是做了 soil test 你才会
知道纯粹的化肥对土壤的伤害有多大,才少用 weed & feed 这样的东西。
而且你说的打孔铺沙这些都是我觉得都是非常错的。白浪费钱,还不止这个
价。如果打孔很有用的话,为什么商业的高尔夫球场不用?人家才是有的
是钱,非常关心草的健康,什么器材都买得起的主。
m***y
发帖数: 14763
30
来自主题: Living版 - grading
Well, it sounds pretty standard to people my age. I don't know if there is
new technology.
Just a few of things off the top of my head
1. You need to glue 1' of the plastic sheeting to the basement wall. We used
to use roof cement, but not sure what's the best adhesive now that there
are so many new glues in the town.
2. Back fill with gravels, not top soil. Most likely, you can't find a good
plant for these spots, so forget about top soil. Another benefit of gravels
is, they provide better drai... 阅读全帖
f*1
发帖数: 837
31
来自主题: Living版 - 割下来的草能当肥料吗
The best thing you can do with grass clippings and falling leaves to your
lawn is to mulch them into your lawn. Grass clippings provide about 25% of
the nitrogen needs of the lawn if directly mulched into the lawn year round.
Mulched (i.e. shredded) leaves provide organic matters to the lawn soil
when decomposed.
Alternatively, you can mix grass clippings and leaves into soil directly to
improve the soil, although you shouldn't rely only on the grass clippings
and leaves for fertilization pur... 阅读全帖
E**********d
发帖数: 253
32
主要是怕污染,没其他问题
http://www.currenenvironmental.com/tank-removal/faq#Q8
The property I am buying has an underground heating oil tank that was
decommissioned (taken out of service). The tank is filled with sand, gravel
or foam and contains no oil. The seller has provided permits and reports
from the town building inspector stating that the tank was properly
abandoned and decommissioned. Is it still necessary to test the soil
surrounding the tank to determine whether contamination exists?
A8. If a sel... 阅读全帖
t*1
发帖数: 124
33
I have never heard top soil cannot not be used as leveling the land. I don't
think your gardener knows about gardening unless you misunderstood him.
Top soil is perfect soil for leveling uneven lawn.
Once you fill the hole with top soil, always add 1 inch more because after a
few month water the soil will become more compact.
by the way, what kind of grass is your lawn made of?
S*A
发帖数: 7142
34
可惜了,看你費了很多力气,是好心来分享的。但是我
实在忍不住说一下,你这里有很多做法不是 best practices.
应该好好做做功课然后再动手的,例如上 bestlawn.info 上面
问清楚。
哪有夏天大太阳种新草的。
草籽一定要从 sod farm supply 的种子店买,一定要 sod quality
的种子。一般的 Garden 没有特别好的草籽的。
而且要先看你在地区什么 Zone,决定什么种类的草,然后再去
seed store 看有什么类型,去 NTEP.ORG 查看你那个地区的 rating。
结合你个人喜好,挑适合你地区的种子。一般面向不名真相的消费
者的种子都是向便宜,快速发芽,见效快的方向优化的。一般都不是
好的种子,有好多甚至有那些一年生(annual)的种子。
撒籽大面积还是要用专门的 spreader. 而且推荐的方式不是十字。
是减少宽度来回。十字只是撒成 chess board,不是更均匀了。
那种旋转的 spreader 一般都有左右不均匀性,通过减少间隔
来回让左边去的和右边回来的 overlap. 这样才系统抵消左右不均
匀性。
买那么多... 阅读全帖
l*t
发帖数: 10829
35
来自主题: gardening版 - 当农民真是不容易,真是不容易
- It's not good to plant anything right now!
- You need to dig up the soil to get rid of the grass roots.
- If your soil bed is at the ground level, make sure to raise up the soil
bed by 6-8inches for veges. If the soil is made up of too much clay, you
need to improve the soil by getting some sandy stuff to mix.
- Also, make sure your trees don't block much of the sunlight.
- Buy some intro books on veges, your local library may have them. Eg:
"Ortho's All About Vegetables" - it's an easy read... 阅读全帖
f**********n
发帖数: 144
36
来自主题: gardening版 - 坑爹呀!好象白忙了一个下午
下午心血来潮吭哧吭哧开了一小块地,下面铺了点manure,上面堆土。挖出来的土比较
硬,看见车库里有包garden soil,心想正好,把soil倒到地里,和地里原来的土混了
混,心想这下够肥了。又费了半天劲,撒上了黄瓜籽和青菜籽。浇水时发现水下渗明显
比另一块菜地慢,手捏了捏土也觉得偏重偏粘。怎么会呢?我用的garden soil啊!然
后转头看见袋子上写着:Garden soil,for trees and shrubs.
郁闷了,难怪土的质地不同。不知这个garden soil for vegetables 和 for shrub
and trees有多大区别. 我能感觉到的就是种菜用的土更臭,更松,而给树用的更结更
粘一些,也没啥气味。
请问大家如何补救?
反正也种了,将错就错?
或是往里掺点啥东西再重新撒籽?如果只是改善排水,是不是可以掺点perlite?这个
能给蔬菜用吗?
还是把土全挖出来重来?
请老农民出谋划策,先谢谢大家了!
g*****e
发帖数: 10097
37
来自主题: gardening版 - 搬家 ---- 生命在于折腾
应该没问题,这里有详细介绍。
How to Grow Asparagus
Yield: Plant between 30 and 40 plants to feed 2 to 4 people several meals.
Set out asparagus crowns in spring when all danger of frost has passed.
Start seed indoors 12 to 14 weeks before the last frost. Asparagus requires
3 years to become established and full productive.
Description. Asparagus is a hardy perennial that produces tender, fleshy,
green stems or "spears" with bud-forming caps. Grown to maturity the
asparagus has fernlike, feathery foliage. The... 阅读全帖
s******m
发帖数: 453
38
据说能帮助吸收室内有害空气,知道的就可以pass了。
Common indoor plants may provide a valuable weapon in the fight against
rising levels of indoor air pollution. NASA scientists are finding them to
be surprisingly useful in absorbing potentially harmful gases and cleaning
the air inside homes, indoor public spaces and office buildings.
The indoor pollutants that affect health are formaldehyde, Volatile Organic
Compounds (benzene and trichloroethylene or TCE), airborne biological
pollutants, carbon monoxide and nitrogen... 阅读全帖
w****n
发帖数: 1737
39
有英文就是方便google.
http://www.ehow.com/how_4485809_grow-thai-basil.html
How to Grow Thai Basil
By an eHow Contributor
Basil comes in many varieties and can add flavor to your cooking at every me
al. Thai basil, also known as Oriental basil or Asian basil, provides more o
f kick for cuisines that call for heavy spices, such as Indian or Thai foods
. As with the other basil varieties, Thai basil is easy to care for and need
s two key elements-plenty of sunlight and well drained soil-to grow
Instructio... 阅读全帖
T*******m
发帖数: 27308
40
来自主题: gardening版 - 请问哪里能弄到好土?
这看你的budget是多少。最好的办法是先去掉老土,但老土得有地方扔呢。一般垃圾公
司不收泥土的。你可试着每周扔一点,这样可以混在一般生活垃圾里。
老土清理干净之后,建议买一车top soil。很多城市有top soil买的。当然,你的院子
得足够大,能够放得下一卡车top soil。地小的话,可以到Lowes/HD买top soil或
garden soil。
f*1
发帖数: 837
41
I don't know a way to address all concerns but I read it somewhere that
chemicals degrade over time and it shouldn't be that much of a concern after
a while (I don't know how long though), but what's more dangerous is heavy
metals, for which you need to do a formal soil test from some reputable soil
test labs (for example the UMass soil test lab). Make sure you ask them to
check heavy metals.
An alternative is to plant on raised beds which you make yourself from known
good soils (I'd still do a... 阅读全帖
w*******e
发帖数: 2405
42
我今年也洒过一次草种
一开始用lawn soil垫底,撒草种
然后lawn soil没有了,就用top soil垫底,撒草种
最后top soil也没有了,就在原来的硬土地上撒草种
我发现,lawn soil上的草种长得最茂盛
在原来的硬土地上的草种长得最慢
所以还是要先铺一层浅浅的好土,再撒草种
d******j
发帖数: 28
43
来自主题: gardening版 - 番茄问题求教
http://ucanr.edu/sites/mgfresno/Garden_Questions/June/
啊呀!google了一下,跟我的西红柿表现真像啊!是真菌病啊!这下完蛋了。
Q. Why are the leaves on my tomato plants turning yellow at the tips,
wilting, becoming brown and dropping off?
Verticillium wilt on tomato
A. Your plants probably have a form of vascular wilt, either Fusarium or
Verticillium wilt. Both invade the water-conducting tissues of the plant,
restricting water flow and causing wilting. Vascular wilts are omnipresent
in soil. Fusarium wilt favors warm soil ... 阅读全帖
f*1
发帖数: 837
44
来自主题: gardening版 - 草地求救!!!
One thing to note is that lawn care needs patience. You shouldn't expect
your lawn to be perfect in the next few weeks or months after you have done
something good to your lawn. It is more like a multi-year project. Even
for a newly renovated lawn, it won't look at its best until a few years have
passed (and with good culture practice).
For a contiguous patch of soil, most likely it won't be that much different.
However, if you suspect your soil could be different for some reason, you
can d... 阅读全帖
j*******d
发帖数: 8834
45
来自主题: gardening版 - 有人成功给紫苏发过芽吗
我知道了原来紫苏种子据说一年内是蛰伏状态,不会发芽,过了才会,除非是在低温保
存了几个月的情况下。。。。。。
One of the challenges in growing Perilla is to handle the seed germination
issue.
Perilla seeds have dormant characteristics and seeds will not germinate
during this period.
The dormant period can begin any time just after the fresh seeds
harvested , seeds will have good germination after this dormant period
finished.
Therefore many experienced farmers prefer to use post-dormant old seeds
than pre-dormant fresh seeds in planting.... 阅读全帖
p*****s
发帖数: 1780
46
来自主题: gardening版 - 栽树需要多大的坑
盆多大,坑多大。 我们这边苗圃说的
http://www.excaliburfruittrees.com/instructions.html
Planting Instructions
Dig hole exactly the size of the container.
Do not add anything to the planting hole, e.g. potting soil, fertilizer,
manure. The fertilizer and manure can burn the new roots and damage the
tree.
Place tree without the container in the hole, with the base of the trunk
1-2" above the ground for a 3-7gal and 3-4" for 15gal+. The potting soil
that the tree came in will break down and the tree wil... 阅读全帖
R*******m
发帖数: 5842
47
来自主题: gardening版 - 多是李鬼
小时候,随便哪块地里都可以挖团土,揉一揉,像搡年糕那样,土就变得很有弹性,用
来做汽车,玩得不亦乐乎。有时候土太干,就吐点口水,搞得非常光亮的样子。也有坏
胚子来捣乱,往土里撒童子尿。
到了这里,需要买土来种菜。到农资公司一看,好的很,有各种各样的土:garden
soil, putting soil, wonder soil, all purpose organic soil...那个价钱都不便宜
。打开一开,多是些木屑类的,连沙子都很少。
买top soil吧!也是差不多,没有什么土,多是些乱78糟的东西。
我要买的是土,就是小时候可以用来搓泥巴团的土,为啥就那么难买呢?
买不到土,就买点粪吧。结果,鸡粪,牛粪。。。打开一看,还是木屑为主!要知道,
从前生产队积肥,说好是鸡粪牛粪猪粪的,你是不能用木屑来冒充的 。。。
w**********u
发帖数: 132
48
The land
Soils
After centuries of rice cultivation, soils in the valley plains have been
greatly modified. Well-developed gray-brown forest soils are widely
distributed in the forest areas of the interior mountains, whereas mature red
soils are common in the low hills and on high terraces. White saline soils and
salt swamps are found in the coastal flatlands. Their parent rocks are marine
saline deposits, penetrated by seawater. Attempts at desalination appear to
have been successful, and some s
l*****a
发帖数: 38403
49
来自主题: TrustInJesus版 - 独角兽的存在证明
哪个对哪个错啊?怎么判定滴?
New International Version
And the wild oxen will fall with them, the bull calves and the great bulls.
Their land will be drenched with blood, and the dust will be soaked with fat.
New Living Translation
Even men as strong as wild oxen will die--the young men alongside the
veterans. The land will be soaked with blood and the soil enriched with fat.
English Standard Version
Wild oxen shall fall with them, and young steers with the mighty bulls.
Their land shall drink its fill of blo... 阅读全帖
v*****y
发帖数: 323
50
来自主题: CivilEngineering版 - Help on Earthen Berm Stability Analysis
Before you do any analysis:
1. Do you have soil boring data below the berm?
2. Do you have any lab testing data for the foundation soils and the
embankment fill?
The typical stability analysis in your case includes:
1. sliding
2. global stability analysis
3. seepage analysis
When you run global stability analysis:
1. What stress condition to use? Steady state or rapid drawdown?
2. What soil parameters to use? Effective stress soil parameters for steady
state, and total stress soil parameters for
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