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对在甘肃河西灌漠土上定位试验1988～1990年3年间绿肥与化肥配合施用对农作物产量、土壤主要物理性质、土壤化学性质、土壤养分平衡等指标的变化进行了总结。结果在明:施用绿肥及绿肥化肥配合施用可为作物提供大量可给态养分,对土壤肥力的增生有明显的作用,尤其对保持和恢复土壤磷、钾的含量具有重要的作用。是建立高产稳产农田的一项重要管理措施。
This paper summarizes the changes of crop yield, main physical properties of soil, soil chemical properties, soil nutrient balance and other indicators during the experiment on the location of irrigation desert soil in Hexi of Gansu Province in 1988 ~ 1990. The result is as follows: The application of green manure and green manure fertilizers can provide crops with a large amount of available nutrients, which have a significant effect on soil fertility. In particular, they play an important role in maintaining and restoring the contents of phosphorus and potassium in soil. It is an important management measure to establish high and stable farmland.