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amyhuiyuli 发表于 2015-5-2 13:47 
我的comfrey种在小花盆里,为浇水方便就把它们放在三角梅的大花盆上面,没想到的是,comfrey的叶子长的又大 ...
主要是叶子覆盖土壤,或者堆肥,只是放上面,我不知道是否也有帮助,但是长的号就好啊。
一般是种果树边有助于果树,当然种花边也可以, 因为它能改善土壤,刚取搜素一篇文章可以看看:
http://permaculturenews.org/2014 ... eally-improve-soil/
或者直接搜索这篇文章的名字:
Does Comfrey Really Improve Soil?
这个人对自己的土壤做了测试对比,才看到了效果
摘抄一些
when I realized I could just do a soil test and compare it to my past years’ tests, and then I would have at least one data point to support or refute the claims. The test results are pictured here, and they will benefit from some explanation.
The first test is from February 2009, after our front yard had sat under sheet mulch all winter and our back yard was still mostly turf grass. The mulched front yard already shows a lower pH (we have alkaline clay soil here, so lower is better), more than double the organic matter, three times the nitrate, and about 50% higher phosphorus and potassium.
By the time of the second test in 2011, I had sheet mulched the back yard as well, but I distinguished between a “raised” bed where a sewer repair had exposed the heavy clay subsoil and a greenhouse area which had not been excavated. The greenhouse bed shows higher nutrient levels than either the front yard or the raised bed, with the exception of potassium, but even this is higher than it had been two years before.
So far so good, and I think I’ve made a good case for sheet mulching, but all these figures are blown away by the sample I took this year under the comfrey plants. After 5 years of comfrey, the topsoil in this sample shows a lower pH and higher percent organic matter than any of the previous samples, and the nutrient levels are practically off the charts – a 47 to 232% increase over the previously observed highs. I did not test for calcium or magnesium either before or after, but just on the basis of NPK the comfrey is completely vindicated.
It appears I owe comfrey and its promoters an apology, but still this is just one data point. To really make the case for comfrey, we will need lots of data from lots of soil types, and we need to publish the results in a reputable source that can be cited by Wikipedia, PFAF, and all the reference books we turn to for authoritative information. And we need to collect negative results (if any) as well as positive ones. Do you have any data on comfrey to share? Please let me know in the comments below!
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