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为了解决上海郊区有机肥用量减少、质量低劣的问题,我们于1979—1984年在上海郊区三种土壤上进行了长期定位试验和1979—1981年中期定位试验,结果均进一步揭示了有机肥的增产作用。试验表明在气候条件相对稳定的条件下,早稻施用有机吧的增产效果与无肥时间的长短呈止相关(r=0.954~(**),n=7)。长期施用有机肥,土壤的物理、化学和生物化学等性状都有明显的改善。本文通过基础产量与最高产量的关系、有机肥的质量和利用率的关系、有机肥与无机肥相结合的效果,从三方面进一步阐述了上海郊区有机肥的有效利用,为建立有机肥与无机肥结合使用的施肥体制,提供了依据。
In order to solve the problem of decreasing organic fertilizer consumption and poor quality in the suburbs of Shanghai, we conducted long-term test and 1979-1981 mid-term test on the three soils in Shanghai suburbs in 1979-1984. The results further revealed the increase of organic fertilizer effect. The results showed that under the condition of relatively stable climatic conditions, the yield increase effect of organic rice in early rice was only correlated with the duration of no fertilizer (r = 0.954 **, n = 7). Long-term application of organic fertilizer, soil physical, chemical and biochemical properties have significantly improved. In this paper, the relationship between basic yield and maximum yield, the relationship between the quality and utilization of organic fertilizer and the combination of organic and inorganic fertilizers were analyzed. The effective utilization of organic fertilizer in the suburbs of Shanghai was further elaborated from three aspects. In order to establish the relationship between organic fertilizer and inorganic Fertilizers used in combination with the system provides the basis.