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机构地区:[1]北京林业大学资源与环境学院,北京100083 [2]中国农业大学资源与环境学院,北京100094
出 处:《中国生态农业学报》2003年第4期18-20,共3页Chinese Journal of Eco-Agriculture
基 金:"九五"河北省科技攻关项目"黑龙港上游农业高效持续发展研究"( 96 2 2 091 0D )部分研究内容
摘 要:夏玉米田进行有效微生物群 (EM )堆肥试验结果表明 ,施EM堆肥处理土壤有机质、全N、碱解氮含量均高于施等量传统堆肥和单施化肥处理。不同施肥处理夏玉米叶面积指数、叶片叶绿素含量、冠层及茎、叶、穗和籽粒生物量随生育期的变化趋势基本相似 ,而施EM堆肥处理数值高于施等量传统堆肥和单施化肥处理 ,且随施肥量的增大二者差异更明显。与施等量传统堆肥相比施EM堆肥处理夏玉米可增产 11%~ 2 0 % 。An experiment was done in plots of summer maize field wi th different fertilizer treatments.The results show that the soil organic matter ,total nitrogen and available nitrogen are higher in the plots applied with EM c ompost than those applied with the same amount of traditional compost and chemic al fertilizer. LAI, leaf chlorophyll content,the biomass of canopy,leaves stem s ,ears and grains of maize,which have similar variation trends in different ferti lizer treatments,were higher in plots applied with EM compost than those applied with the same amount of traditional compost and chemical fertilizer.The more th e compost input,the more obvious difference in the values.Maize yields in th e plots applied with EM compost are 11%~20% higher than those applied with the same amount of traditional compost.The more the compost input,the more remarkabl e increase of the maize yield.
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