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].干旱地区农业研究,2014,32(2):91~98
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
Soil water content and crop response under intercropping of different crops in dry farmland of the Southern Kerqin Sandy Land
  
DOI:10.7606/j.issn.1000-7601.2014.02.015
中文关键词:  旱作农田  农林间作  土壤水分  作物产量
英文关键词:dry farmland  intercropping pattern  soil moisture  copy yield
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)
作者单位
贾 微1,2,孙占祥2,白 伟1,2,郑家明2,杜桂娟2,冯良山1,2,杨 宁1,2,吕林友3 (1.沈阳农业大学土地与环境学院 辽宁 沈阳 110866 2.辽宁省农业科学院耕作栽培研究所辽宁省旱作节水工程技术中心 辽宁 沈阳 110161 3.辽宁省农业科学院风沙地改良利用研究所 辽宁 沈阳 110161) 
摘要点击次数: 1487
全文下载次数: 1137
中文摘要:
      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%。
英文摘要:
      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.
查看全文  查看/发表评论  下载PDF阅读器