我国北方农村习惯用掺土的方法积肥,土粪中,土占50％以上,有机质约2％,全(?)量在0.15％以下。积肥、运肥、施肥耗费劳力太多。陕西省扶风县毕公大队,1977年起改革这种黄土搬家的做法,推行粪草堆沤,取得很好的效果。这项改革已开始在部份地区推广。据宝鸡市统计,到1981年8月,有883个生产队采用了毕公大队的经验。 In the northern part of our country, the rural areas are accustomed to using soil to mix fertilizer, soil manure and earth, accounting for more than 50%, organic matter about 2%, and the total amount less than 0.15%. Product fertilizer, fertilizer, fertilizing labor consuming too much. Shaanxi Province Fufeng County Bi brigade, since 1977, the reform of this loess move, the implementation of dung shelling, and achieved good results. This reform has begun to be promoted in some areas. According to the statistics of Baoji City, by August 1981, 883 production teams had used the experience of Bi-Brigade.