| 摘要: |
| 通过设置在北京昌平区的长期肥料定位试验,研究16年的长期不同施肥制度下,土壤微生物生物量碳、氮、磷的状况。试验设置冬小麦-夏玉米复种连作和小麦-玉米→小麦-大豆复种轮作2种不同种植制度以及长期撂荒处理(CK0),其中冬小麦-夏玉米复种连作种植制度(种植方式Ⅰ)包括4个施肥处理,分别为:对照(CK,不施肥,但种植作物)、氮磷钾(NPK)、氮磷钾+猪厩肥(NPK+M)、氮磷钾+玉米秸秆(NPK+S);小麦-玉米→小麦-大豆复种轮作种植制度(种植方式Ⅱ)包括1个施肥处理为氮磷钾+种植方式Ⅱ(NPKF)。试验结果表明:1)长期撂荒土壤的有机质和全氮的含量、微生物量碳(SMB-C)和氮(SMB-N)均显著高于2种不同种植制度的农田土壤,但土壤微生物生物量磷含量较低;2)2种不同的种植制度中,施肥处理(NPK、NPKM、NPKS和NPKF)农田的土壤养分含量、微生物量生物量碳、氮、磷均高于不施肥但种植的农田(CK),与CK相比,NPK、NPK+M、NPK+S和NPKF处理的微生物量生物量碳增加了26%、70%、36%和46%,微生物量生物量氮增加了92%、251%、130%和159%,以及微生物量生物量磷增加了519%1... |
| 关键词: 长期肥料试验 施肥制度 土壤微生物生物量碳 土壤微生物生物量氮 土壤微生物生物量磷 |
| DOI：10.11841/j.issn.1007-4333.2009.03.058 |
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| 基金项目:国家“十一五”科技支撑计划资助项目(2006BAD29B01,2006BAD29B02);;中国博士后科学基金(20080440461) |
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| Long-term effects of different fertilizer management on microbial biomass C,N and P in a Fluvo-aquic soil |
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| Abstract: |
| A study of soil microbial biomass carbon(SMB-C),microbial biomass nitrogen(SMB-N),and microbial biomass phosphorus(SMB-P) in arable soils with different fertilizer regimes was carried out based on a 15-year long term fertilizer experiment in a Fluvo-aquic soil in Beijing.Thirteen treatments were established in 1990.Six treatments were chosen for this work: Four were in a wheat-maize rotation receiving either no fertilizer(CK),mineral fertilizers(NPK),mineral fertilizers plus farmyard manure(NPKM) or mineral... |
| Key words: long-term fertilization experiment fertilization systems soil microbial biomass carbon soil microbial biomass nitrogen soil microbial biomass phosphorus |
