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本文通过60年长期田间试验及与有机质分解有关的模拟试验,研究了气侯温暖区连续施用含有等量氮磷钾的无机、有机肥对水稻土土壤肥力和水稻产量的影响。头十年,有机肥区氮的60%源于稻草堆肥,水稻产量明显低于无机肥区的产量,以后,有机肥区水稻产量达到了无机肥区水稻的产量水平,三十年后终于高于无机肥区的产量。60年间,有机肥区全碳、全氮和矿化氮量逐年增加。
In this paper, 60 years of long-term field experiments and simulations related to the decomposition of organic matter were carried out to study the effects of successive application of inorganic and organic fertilizers containing NPK and K fertilizers on soil fertility and rice yield in paddy soils. In the first decade, 60% of nitrogen in organic fertilizer area came from straw compost, and the yield of rice was obviously lower than that of inorganic fertilizer area. Afterwards, the yield of organic fertilizer reached the level of inorganic fertilizer in paddy area, Yield in inorganic fertilizer area. In 60 years, total organic carbon, total nitrogen and mineralized nitrogen in organic fertilizer area increased year by year.