摘要
研究了添加有机、无机营养物质对外加除草剂莠去津土壤(每1g土中含莠去津10mg/)中微生物生物量碳、氮和磷的动态变化过程。研究结果表明,在整个培养过程中,仅加莠去津的土壤中微生物生物量碳、氮、磷的含量均显著降低,与对照相比,分别平均降低了13.5%,10.1%,20.0%。但是,施用有机、无机营养物质的处理,土壤微生物生物量碳、氮、磷的含量均显著增加。不同处理对微生物生物量碳、氮的含量影响程度依次为:腐熟猪粪>紫云英>水稻秸秆腐熟猪粪>N、P肥配施>单施N肥>单施P肥。而对微生物生物量磷含量的影响则为:腐熟猪粪>N、P肥配施>紫云英>单施N肥>单施P肥>水稻秸秆。
An incubation experiment was conducted to study the dynamic response of soil microbial biomass C, N, P in an atrazine-added paddy soil, at a rate of 10 mg/g soil. Results showed that soil microbial biomass C, N, P significantly decreased after addition of atrazine. As composed with control, microbial biomass C, N and P decreased averagely 13.5%,10.1%,20.0%. However, microbial biomass C, N and P significantly increased after application of organic matters and fertilizers. The effect of organic amendments and fertilizers on microbial biomass C, N followed the order of pig manure > Chinese clover> rice straw> NP combined treatment> sole N treatment> sole P treatment. But the effect of organic materials and fertilizers on microbial biomass P was pig manure >NP combined treatment>Chinese clover>sole N treatment> sole P treatment>rice straw.
出处
《水土保持学报》
CSCD
北大核心
2004年第4期57-60,72,共5页
Journal of Soil and Water Conservation
基金
国家自然科学基金(40171051)
高等学校优秀青年教师教学科研奖励计划基金资助
