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为了进一步探讨水稻土肥力演变过程和生态平衡状况,研究稻田土壤中物质循环的容量、强度及模式,为合理用地养地和减少环境污染和保持良性循环提供科学依据,设置了4种培肥处理:1)不施肥;2)施化肥;3)施有机肥;4)施有机肥加化肥。定期调查分析了不同培肥措施对稻谷产量、吸肥规律和土壤理化性质的影响。4年来的试验结果表明,施化肥处理,稻谷产量至今高于施有机肥和有机肥加化肥处理,但增产幅度逐年趋于减少;稻谷草吸肥量与产量呈正相关;每元肥料增产增收,却施有机肥处理高于施化肥和有机肥加化肥处理;从稻谷产量、经济效益和影响土壤理化性质等综合因素分析,结果表明,施有机肥加化肥处理优于单施化肥或单施有机肥处理.
In order to further explore the process of soil fertility evolution and ecological balance, to study the capacity, intensity and pattern of material circulation in paddy soils, to provide scientific evidence for the rational use of land and to reduce environmental pollution and to maintain a virtuous circle. Four kinds of fertilization treatments : 1) no fertilization; 2) fertilizers; 3) organic fertilizers; 4) organic fertilizers and fertilizers. Periodic investigation and analysis of different fertilization practices on the yield of paddy, fertilizer law and soil physical and chemical properties. The results of 4 years showed that the yield of paddy was higher than that of manure and organic manure plus chemical fertilizers, but the rate of yield increase tended to decrease year by year. The amount of manure absorbed was positively correlated with the yield. However, organic manure application was higher than that of chemical fertilizers and organic manure plus chemical fertilizers. From the analysis of comprehensive factors such as grain yield, economic benefits and soil physical and chemical properties, the results showed that organic manure and chemical fertilizers were better than single chemical fertilizers or organic manure Fertilizer treatment.