| 不同种植模式对土壤氮素转化及酶活性的影响 |
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| 引用本文： | 雍太文,杨文钰,向达兵,陈小容.不同种植模式对土壤氮素转化及酶活性的影响[J].应用生态学报,2011,22(12):3227-3235. |
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| 作者姓名： | 雍太文 杨文钰 向达兵 陈小容 |
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| 作者单位： | 1.四川农业大学农学院, 四川温江 611130;2.农业部西南作物生理生态与耕作重点实验室, 四川温江 611130 |
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| 基金项目： | 国家重点基础研究发展计划项目(2011CB100400); 大豆产业技术体系专项(CARS-04-PS19)资助 |
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| 摘 要： | 采用两年大田试验，研究了小麦-大豆（A1）、小麦-甘薯（A2）、玉米（A3）、小麦/玉米/大豆（A4）和小麦/玉米/甘薯（A5）5种种植模式下，小麦/玉米/大豆套作体系的土壤酶活性变化特征及其对土壤氮素转化的影响.结果表明：与A1、A2、A3和A5相比，A4提高了各作物在开花期（或吐丝期）和成熟期的土壤总氮含量及脲酶和蛋白酶活性，处理间表现为套作＞单作、大豆茬口＞甘薯茬口、边行＞中行；降低了小麦、玉米土壤的NO3--N、NH4+-N含量及小麦土壤的硝酸还原酶活性.玉米土壤的硝酸还原酶活性在玉米、大豆共生前的拔节期为单作＞套作，在玉米、大豆共生后的吐丝期和成熟期为套作＞单作、大豆茬口＞甘薯茬口；大豆土壤的NO3--N、NH4+-N含量及硝酸还原酶活性在分枝期为单作＞套作，在开花期和成熟期为套作＞单作、大豆茬口＞甘薯茬口、中行＞边行.
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| 关 键 词： | 小麦/玉米/大豆套作 土壤氮含量 土壤酶活性 氮素转化 |
Effects of different planting modes on soil nitrogen transformation and related enzyme activities |
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| YONG Tai-wen
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YANG Wen-yu
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XIANG Da-bing
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CHEN Xiao-rong.Effects of different planting modes on soil nitrogen transformation and related enzyme activities[J].Chinese Journal of Applied Ecology,2011,22(12):3227-3235. |
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| Authors: | YONG Tai-wen YANG Wen-yu XIANG Da-bing CHEN Xiao-rong |
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| Institution: | 1.College of Agronomy, Sichuan Agricultural University, Wenjiang 611130, Sichuan, China;2.Ministry of Agriculture Key Laboratory of Crop Physiology, Ecology and Cultivation in Southwest, Wenjiang 611130, Sichuan, China |
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| Abstract: | A 2-year field experiment was conducted to study the dynamics of soil nitrogen content and urease,proteinase,and nitrate reductase activities in a wheat/maize/soybean relay strip intercropping system under effects of five planting modes,i.e.,wheat-soybean(A1),wheat-sweet potato(A2),maize(A3),wheat/maize/soybean(A4),and wheat/maize/sweet potato(A5).Among the five planting modes,A4 increased the soil total nitrogen content and urease and protease activities at flowering(or spinning) and maturing stages,and th... |
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| Keywords: | wheat/maize/soybean relay strip intercropping soil nitrogen content soil enzyme activity nitrogen transformation |
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