| 不同种稻方式对后茬大麦产量和土壤微生物量的影响 |
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| 引用本文： | 张富国,徐阳春,沈其荣,王永红.不同种稻方式对后茬大麦产量和土壤微生物量的影响[J].生态与农村环境学报,2009,25(2). |
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| 作者姓名： | 张富国 徐阳春 沈其荣 王永红 |
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| 作者单位： | 南京农业大学资源与环境科学学院,江苏,南京,210095 |
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| 摘 要： | 通过田间试验研究盖草、覆膜、裸露、水作4种种稻方式对后茬大麦产量、生物量、土壤微生物量和氮肥利用率的影响.结果表明,大麦籽粒产量以盖草后茬最高,比覆膜、裸露和水作后茬增产6.0%、16.4%和37.0%.大麦收获期地上部生物量也是盖草后茬最高,分别比覆膜、裸露和水作3个处理增加3 424、6 059、6 961 kg·hm-2.4个处理后茬大麦生长期间土壤微生物量碳、氮随着大麦生育期进程呈先升高后降低的趋势,且各个生育期均表现为盖草＞覆膜＞裸露＞水作.盖草处理氮肥农学利用率比覆膜、裸露、水作高0.9、2.2和8.0 kg·kg-1;氮肥生产率也表现出上述趋势,分别高2.8、7.0和13.3 kg·kg-1.说明旱作水稻覆盖秸秆下的稻-麦轮作是一种优化的种植模式,具有良好的生态效益和社会效益.
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| 关 键 词： | 稻麦轮作 大麦产量 土壤微生物量碳 土壤微生物量氮 氮肥利用率 |
Effects of Rice Cultivation Pattern on Yield of After-Crop and Soil Microbial Biomass |
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| ZHANG Fu-guo,XU Yang-chun,SHEN Qi-rong,WANG Yong-hong.Effects of Rice Cultivation Pattern on Yield of After-Crop and Soil Microbial Biomass[J].Journal of Ecology and Rural Environment,2009,25(2). |
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| Authors: | ZHANG Fu-guo XU Yang-chun SHEN Qi-rong WANG Yong-hong |
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| Institution: | College of Resources & Environmental Sciences;Nanjing Agricultural University;Nanjing 210095;China |
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| Abstract: | A field experiment designed to have four treatments,grass mulch(GC),film mulch(FM),bare(LL),and submerged(SZ),was conducted to study effects of rice cultivation pattern on yield and biomass of its after-crop,barley,soil microbial biomass and nitrogen fertilizer use efficiency.Results show that(1)Treatment GC was the highest in grain yield of barley,about 6.0%,16.4% and 37.0% higher than Treatments FM,LL and SZ,respectively;(2)Treatment GC was also the highest in biomass of the barley at its harvest stage,an... |
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| Keywords: | rotation of rice and barley barley yield soil microbial biomass C soil microbial biomass N nitrogen fertilizer use efficiency |
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