摘要
长期施用有机肥或有机无机肥配施均能显著提高潮土、旱地红壤和红壤性水稻土耕层松结态腐殖质、稳结态腐殖质和紧结态腐殖质含量,但以有机无机肥配施的效果最好。有机无机肥配施能提高三种土壤耕层稳结态腐殖质和潮土耕层松结态腐殖质碳占重组有机碳的比例,降低三种土壤紧结态腐殖质碳占重组有机碳的比例。单施有机肥或化肥也能提高潮土耕层三种结合态腐殖质碳占重组有机碳的比例,降低旱地红壤和红壤性水稻土紧结态腐殖质碳占重组有机碳的比例。施肥还可以提高三种土壤耕层松结态腐殖质/紧结态腐殖质的比值。
Longterm application of organic manure, or combined application of inorganic fertilizer and organic manure could significantly increase the level of loosely combined humus, stably combined humus and tightly combined humus in the topsoil of fluvoaquic soil, arid red soil and paddy red soil. The combined application was the most effective. Combined application of organic manure and inorganic fertilizer could increase the ratio of stably combined humus to organic carbon in heavy groups in the topsoil of the three soils, and the ratio of loosely combined humus to organic carbon in heavy groups in the topsoil of fluvoaquic soil, while it could decrease the ratio of tightly combined humus to organic carbon in heavy groups in the topsoil of the three soils. Single application of organic manure or chemical fertilizer could also increase the ratio of the three combined forms of humus to organic carbon in heavy groups in the topsoil of fluvoaquic soil, while it could decrease the ratio of tightly combined humus to organic carbon in heavy groups in the topsoil of arid red soil and paddy red soil. Thus the ratio of loosely combined humus to tightly combined humus could be increased in the topsoil of fluvoaquic soil, arid red soil and paddy red soil under longtime fertilization.
出处
《土壤肥料》
CSCD
北大核心
2002年第6期8-12,共5页
Soils and Fertilizers
基金
农业部"九 五"部重点农业高新技术与基础研究项目(农-03)"国家土壤肥力与肥料效益监测技术研究"。
