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作 者 ：史吉平1;张夫道2;林葆2

期 刊 ：植物营养与肥料学报 2002年 8卷 2期 页码：131-136

关键词：长期定位施肥；土壤；有机无机复合体；粒径分级；

Keywords:long term fertilization, soil, organo mineral complex, classification of particle diameter,

摘 要 ：长期施用化肥、有机肥或有机无机肥配施均能提高潮土和旱地红壤的原土复合量 ,有机无机肥配施还可以提高红壤性水稻土耕层的原土复合量 ,单施化肥对红壤性水稻土的原土复合量影响不大 ;长期施肥降低 3种土壤的原土复合度 ,但提高了土壤的增值复合量和增值复合度。施有机肥或有机无机肥配施土壤的增值复合量高于施化肥的土壤 ,但其增值复合度却低于施化肥的土壤。长期施肥还影响土壤有机无机复合体的粒径分级 ,施肥一般都可提高土壤中粘粒级和粉砂级复合体含量 ,降低细砂级复合体含量。长期施用有机肥或有机无机肥配施还可以提高 3种土壤中的G₀、G₁和G₂等 3组复合体含量 ,并且有机无机肥配施可以促使G₀和G₁组复合体向水稳性强的G₂组复合体转化。

Abstract:Long term application of inorganic fertilizer, organic manure, or combined application of both could increase the original soil compound of fluvo aquic soil and arid red soil Combined application of organic manure and inorganic fertilizer could also increase the original soil compound in the topsoil, while single application of inorganic fertilizer had less effect on the original soil compound of paddy red soil Besides, long term fertilization could decrease the original soil complex degree, but increase the adding compound and adding complex degree of the three sorts of soil The soil applied with organic manure or combined with inorganic fertilizer was higher in adding compound, but lower in adding complex degree than that applied with inorganic fertilizer Long term fertilization could influence the classification of particle diameter of organo mineral complex Specifically, fertilization could increase the levels of clayey and silty compexes, and decrease the level of sandy complex Long term application of organic manure, or combined with inorganic fertilizer could increase the levels of three groups of complexes (G₀: water dispersing complex,G₁: sodic dispersing complex and G₂: grind sodic dispersing complex), and accelerate conversion of G₀ and G₁ groups of complexes into water stable G₂ groups of complexes

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