摘要
以黑龙江省农业科学院黑河分院"土壤肥力与肥效长期定位试验"的农田暗棕壤为研究对象,测定不同施肥制度下大豆土壤微生物量C、N动态变化,探讨长期不同施肥处理对暗棕壤的培肥效应。结果表明,与不施肥、单施化肥、单施有机肥处理相比,化肥配施有机肥能显著增加大豆各生育期土壤微生物量C、N量及qMB值,增强了农田暗棕壤土壤养分容量的供应强度,有利于农田暗棕壤的培肥。
The effects of long-term fertilization treatments on the soil microbial biomass for dark brown soil in farmland were investigated,based on the long-term site-specific trial of dark brown soils fertility and fertilizers effects set up by Heilongjiang Academy of Agricultural Sciences.Results showed that:Compared with no fertilizer,only applied organic fertilizer and chemical fertilizer,the compound organic and chemical N,P,K fertilizer application could enhance the soil microbial biomasses greatly in the whole soybean growth periods,and also increased the supplies of the soil organic matter and total nitrogen,which benefit to the fertility of dark brown soil.
出处
《农业系统科学与综合研究》
CSCD
2010年第4期484-486,共3页
System Sciemces and Comprehensive Studies In Agriculture
基金
黑龙江省杰出青年基金项目(JC200622)
国家科技支撑计划课题(2008BAD96B02)
黑龙江省自然基金项目(C200824)
哈尔滨市科技创新人才研究专项(2008RFQYN126)
关键词
暗棕壤
大豆生育期
长期施肥
土壤微生物量碳、氮
dark brown soils
soybean growth period
long-term fertilization
soil microbial biomass C N