摘要
通过湖南省7个县市土壤肥力与肥效监测长期定位试验,研究了单施化肥和有机无机肥配施对稻田耕层土壤养分及水稻产量的影响。结果表明,长期有机无机肥配施显著增加了土壤有机碳及活性有机碳含量,提高土壤全氮、全磷、全钾、全锌、全铜以及碱解氮、速效磷、速效钾、有效锌、有效铜含量,效果为高量有机肥配施(HOM)>中量有机肥配施(MOM)>单施化肥(NPK)。说明无论单施化肥还是有机无机肥配施都可以增强土壤养分容量及其供应强度,其中以高量有机肥配施效果最好。与试验前相比,施肥处理下土壤氮、磷维持平衡或大幅度积累,但土壤钾仍出现不同程度的亏缺。
Based on seven long-term fertilization experiments in Hunan province, paddy soil nutrients and grain yield affected by different fertilizer application methods were studied. Four treatments were designed as no fertilizer （CK）, chemical fertilizer（NPK）, chemical fertilizer with medium amount organic manure（MOM）, and chemical fertilizer with high amount organic manure（HOM）.The results showed that compared with CK, long-term fertilizer application increased content of soil total N, total P, total K, total Zn, total Cu and available N, available P, available K, available Zn, available Cu , and the effect order was NPK〈 MOM〈 HOM. Applying chemical fertilizer or chemical fertilizer combined with organic manure could raise soil nutrient capacity and supply intensity. Soil NP kept in balance or accumulated abundantly since the experiments has been conducted. Soil K was reverse.
出处
《湖北农业科学》
北大核心
2009年第2期310-313,共4页
Hubei Agricultural Sciences
基金
中国科学院知识创新工程项目(KZCX-SW-441)
嘉应学院博士启动基金资助项目(2007)
