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1981年,我们在旱地麦田进行了施肥试验。试验分单施农肥,单施氮、磷化肥和农肥、化肥配合底施3个处理,以不施肥为对照,耕作管理措施相同。结果见表1。看出,农肥与化肥配合使用效果最好,但施化肥次之,而单施农肥8000斤,仅比对照增产5.1%。分析其原因时,农家肥虽然养分齐全,富含有机质,能增加土壤的团粒结构,改善土壤的理化形状。
In 1981, we conducted fertilization experiments in dryland wheat fields. Test points of a single application of fertilizer, nitrogen alone, phosphorus fertilizer and fertilizer, fertilizer at the end with three treatments, no fertilization as a control, tillage management practices. The results are shown in Table 1. It can be seen that the best combination of fertilizer and chemical fertilizer is used, but fertilizer is the second, and 8000 kg of fertilizer alone, only yield 5.1% more than the control. Analysis of the reasons, although nutrient-rich manure, rich in organic matter, can increase the soil aggregate structure, improve soil physical and chemical shape.