| 高产田夏玉米季土壤中酶及微生物特性的动态变化特征 |
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| 引用本文： | 刘楠,张丽娟,刘文菊,叶灵,李小磊.高产田夏玉米季土壤中酶及微生物特性的动态变化特征[J].河北农业大学学报,2010,33(5). |
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| 作者姓名： | 刘楠 张丽娟 刘文菊 叶灵 李小磊 |
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| 作者单位： | 1. 河北农业大学资源与环境学院,河北保定,071000
2. 河北农业大学资源与环境学院,河北保定,071000;国家山区北方农业工程技术研究中心,河北保定,071001 |
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| 基金项目： | 十一五"国家科技支撑计划"粮食丰产科技工程项目 |
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| 摘 要： | 以河北山前平原现有高产田为研究对象,以周边常规农田为对照,研究了秸秆还田条件下夏玉米生长季土壤酶活性及微生物特性的动态变化特征。结果表明:两种农田上层(0～20 cm)土壤酶活性较强,且高产田土壤酶活性整体显示出高于常规农田;在不同的土层中,各土壤酶的活性随生育期的动态变化趋势基本一致,在玉米生长旺盛阶段活性较高,其中高产田土壤磷酸酶活性显著高于常规农田(P0.05)。对于常规农田,玉米十叶期追施尿素有效提高了微生物活性,这有利于作物生长旺盛期的发育及还田秸秆腐解;高产田微生物量氮和微生物量磷在生育期内整体上高于常规农田,且表层土壤微生物量磷显著高于常规农田(P0.05)。
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| 关 键 词： | 夏玉米 高产田 土壤酶活性 土壤微生物生物量 土壤呼吸熵 |
Dynamics of soil enzyme activities and microbial characteristics in high-yield fields with summer maize |
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| LIU Nan,ZHANG Li-Juan,LIU Wen-Ju,YE Ling,LI Xiao-Lei.Dynamics of soil enzyme activities and microbial characteristics in high-yield fields with summer maize[J].Journal of Agricultural University of Hebei,2010,33(5). |
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| Authors: | LIU Nan ZHANG Li-Juan LIU Wen-Ju YE Ling LI Xiao-Lei |
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| Institution: | LIU Nan1,ZHANG Li-Juan1 2,LIU Wen-Ju1,YE Ling1,LI Xiao-Lei1(1.College of Agricultural Resources , Environmental Sciences,Agricultural University of Hebei,Baoding 071000,China,2.National Engineering Research Center for Agriculture in Northern Mountainous Areas,Baogding 071000,China) |
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| Abstract: | Dynamics of soil enzyme activities and microbial characteristics were investigated in high-yield fields and conventional fields with straw returning in piedmont plain of Hebei Province during the summer maize growing periods.The results showed that the enzyme activities in 0-20 cm soil layers were higher than the others.The enzyme activities in soil of high-yield fields were generally higher than those in conventional fields.Moreover,there were similar trends of soil enzyme activities between high-yield fie... |
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| Keywords: | summer maize high field soil enzyme activity soil microbial biomass soil respiration |
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