| 引用本文： |
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贾 微，孙占祥，白 伟，郑家明，杜桂娟，冯良山，杨 宁，吕林友.科尔沁沙地南缘旱作农田不同作物配置土壤水分效应及作物响应研究[J].大中文模板3,2014,(2):91-98. [点击复制]
- JIA Wei, SUN Zhan-xiang, BAI Wei, ZHENG Jia-ming, DU Gui-juan, FENG Liang-shan, YANG Ning, LV Lin-you.Soil water content and crop response under intercropping of different crops in dry farmland of the Southern Kerqin Sandy Land[J].大中文模板3,2014,(2):91-98. [点击复制]
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| 摘要: |
| 针对科尔沁沙地南缘风蚀沙漠化严重、水资源短缺等突出问题，在大田条件下，以仁用杏、花生、谷子、甘薯为研究对象，进行了旱作农田不同作物配置土壤水分效应及作物响应研究。结果表明，不同作物配置方式在西侧距仁用杏2 m（W2）、1 m（W1）、仁用杏树带下（T0），东侧距仁用杏1 m（E1）、2 m（E2）处土壤水分效应均为负值，且程度不同。在垂直方向上，农林复合系统可有效保持表层土壤水分，但仁用杏与农作物之间也存在着水分竞争，20～80 cm为水分的主要竞争层，其中40～60 cm竞争最为强烈，不同作物的竞争程度表现为甘薯>谷子>花生；水平方向上，随带距的变化，土壤水分均呈现出中间小、两侧大的开口向上类似抛物线形状的分布趋势，但不同作物表现程度不尽相同。在作物产量方面，间作作物产量均出现一定程度的减产，花生、谷子和甘薯的产量分别比对照降低70.7%、63.3%和64.0%。 |
| 关键词: 旱作农田 农林间作 土壤水分 作物产量 |
| DOI： |
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| 基金项目:国家自然科学基金（31170407）；公益性行业科研专项资金项目(201103001)；国家科技支撑计划项目(2012BAD09B00) |
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| Soil water content and crop response under intercropping of different crops in dry farmland of the Southern Kerqin Sandy Land |
| JIA Wei1，2, SUN Zhan-xiang2, BAI Wei1，2, ZHENG Jia-ming2, DU Gui-juan2, FENG Liang-shan1，2, YANG Ning1，2, LV Lin-you3 |
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| Abstract: |
| Considering the current status of soil erosion, desertification and groundwater depletion, as well as the advantage of intercropping between trees and crops, we selected peanut, millet, sweet potato, and kernel-apricot to construct intercropping systems and investigated their effect on soil water content and crop growth in dry farmland of the Southern Kerqin Sandy Land. Results showed that there are different levels of negative effects of soil water in different points (W2, W1, T0, E1, E2) under different systems. Tree-crop intercropping can preserve the surface soil moisture, whereas there existed competition between kernel-apricot and crops, with 40～60 cm being the most severest and the order of competition degree being potato>millet>peanut. Yields of peanut, millet, and sweet potato in the intercropping system were decrease by 70.7%, 63.3%, and 64.0% as compared to monocropping. |
| Key words: dry farmland intercropping pattern soil moisture copy yield |
