提高土壤肥力是解决衡水地区旱薄低产的中心问题。增施肥料可以提高地力,但是,目前衡水地区劳畜力紧张,肥源缺乏,单靠施肥远不能满足大幅度增产的要求。因此,利用豆科绿肥是培肥增产的有效措施,并已开始在生产上推广应用。1962年-1963年我们曾用绿豆作夏季绿肥进行研究,证明在旱地条件下压绿肥的后茬小麦比夏季休闲留麦增产17%,为夏玉米茬小麦产量的3.8倍;并且对蓄水保墒、培肥地力和有效养分的转化积累均有良好影响。但用绿豆作绿肥,产 Improving soil fertility is the key to solve the drought and low yield in Hengshui area. Fertilization can increase fertility, however, at present, Hengshui area labor shortage, lack of fertilizers, fertilizer alone can not meet the substantial increase in production requirements. Therefore, the use of legumes green manure is an effective measure to increase production, and has begun to promote the production. 1962 - 1963 We used mung bean as summer green manure to study that after dry land under the conditions of green manure after wheat than summer leisure wheat yield increased by 17%, 3.8 times the summer corn stubble wheat yield; and water storage , Fertilization of fertility and effective conversion and accumulation of nutrients have a good effect. But with green beans for green manure, production