玉门市柳河公社二道沟大队现有1300多人,耕地4500多亩,人均3.5亩。以种植小麦为主(70％以上)搭配种植玉米、蚕豆和油料。由于夏粮面积大,倒茬困难,病虫、草荒危害严重,加之农家肥料不足、地瘦肥缺,为了提高粮食产量,化肥施用量逐年增加。1978年全大队平均亩施化肥160多斤,投资14.5元,人均负担化肥费用40多元。为了扭转 Yumen Liuhe commune Erdaogou brigade existing more than 1,300 people, more than 4,500 acres of arable land, 3.5 mu per capita. To grow wheat-based (70%) with corn, broad beans and oil. Due to the large area of ​​summer grain, inverted cropping difficulties, pests and diseases, serious shortage of grasses, coupled with insufficient farm manure, leprosy and lack of fertilizer, in order to improve food production, fertilizer application increased year by year. In 1978, the entire brigade averaged 160 kilos of fertilizer per acre, with an investment of 14.5 yuan and a per capita burden of chemical fertilizer over 40 yuan. In order to reverse