| 坡地和平地保护性耕作比较研究 |
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| 引用本文： | 陈渊,张兴义,李树学.坡地和平地保护性耕作比较研究[J].农业系统科学与综合研究,2011,27(4):485-489. |
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| 作者姓名： | 陈渊 张兴义 李树学 |
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| 作者单位： | 1. 中国科学院东北地理与农业生态研究所黑土区农业生态院重点实验室,黑龙江哈尔滨,150081
2. 吉林省长白山自然保护管理中心,吉林安图,133613 |
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| 基金项目： | 国家科技支撑计划(2009BADB3B04,2007BAD89B05-12,2006BAD05B05) |
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| 摘 要： | 对东北典型黑土区,比较研究了保护性耕作在坡耕地和岗平地对作物产量、土壤密度、水热状况的作用差异,以及保护性耕作在坡耕地的水保效应。结果显示：在大豆玉米轮作制下,实施免耕（NT）和少耕（RT）,较传统旋耕相比,坡耕地种植大豆,NT增产12.56%,RT减产0.94%;种植玉米,NT处理增产1.10%,RT减产14.80%。岗平地种植大豆,NT增产9.23%,RT增产4.80%,玉米NT、RT处理分别减产为22.60%和10.02%。坡耕地NT增加了耕层的土壤密度以及土壤质量含水量,降低了土壤耕层的温度,各处理之间的差异均小于岗平地。NT还降低了坡耕地水土流失的径流量和径流系数。
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| 关 键 词： | 保护性耕作 坡耕地 岗平地 产量 水土流失 |
Comparative Study on Conservational Tillage in Slope and Flat Farmland |
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| CHEN Yuan,ZHANG Xing-yi,LI Shu-xue.Comparative Study on Conservational Tillage in Slope and Flat Farmland[J].System Sciemces and Comprehensive Studies In Agriculture,2011,27(4):485-489. |
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| Authors: | CHEN Yuan ZHANG Xing-yi LI Shu-xue |
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| Institution: | CHEN Yuan1,ZHANG Xing-yi1,LI Shu-xue2(1.Northeast Institute of Geography and Agroecology,Chinese Academy of Sciences,Harbin 150081,China,2.Natural protection and management center of Changbai mountain,Antu 133613,China) |
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| Abstract: | Effects of conservation tillage on crops yield,soil bulk density,water and heat conditions along with roles of conservative tillage on water conservation in the slope farmland were explored through a comparative study between the slope farmland and the flat farmland in the black soil region of Northeast China.Two conservation tillage methods of no-tillage(NT) and reduced tillage(RT) were adopted in the corn-soybean rotation system.It was showed that soybean yield increased 12.56% for NT treatment while decr... |
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| Keywords: | conservation tillage slope farmland flat farmland yield water losses and soil erosion |
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