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江苏省茅山丘陵地区稻田种冬季绿肥的面积约为20%上下,冬闲的面积约有15%.冬季绿肥以紫云英为主,常年每亩产量为1000—1500斤.这里的绿肥都种于土壤较为肥沃的冲田及近村田,因此,在自然肥料缺少的情况下大部分低产的岗田与塝田就难于得到改良.据调查,这里绿肥之所以低产与岗、培田之所以不种绿肥的原因,一是土壤肥力瘠薄,绿肥长不起来;二
The area of winter green manure in paddy fields in Maoshan hilly area of Jiangsu Province is about 20%, and the area of winter leisure is about 15% .Winter green manure is dominated by milk vetch and the annual output per mu is 1000-1500 kg. Therefore, in the absence of natural fertilizers most of the low-yielding Gangda and Takeda will be difficult to be improved.According to the survey, the reason why green manure here is low yield and Kong, Peitian reason not to green manure The reason, first, infertile soil fertility, green man grow up; II