晋西黄土区核桃花生复合土壤水分效应研究
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国家“十一五”科技支撑项目“黄土区农林复合系统可持续经营技术研究”(2006BAD03A0503)


Effects of Soil Moisture in Walnut-peanut Intercropping System in the Loess Region of West Shanxi Province
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    摘要:

    以2008年晋西黄土区典型核桃花生复合系统为研究对象, 利用土钻取样烘干称重法, 取土深度为0-100cm, 对复合系统土壤水分效应进行了研究。研究结果表明, (1)核桃花生复合系统土壤含水量的季节变化极显著; (2)核桃花生复合系统在垂直方向上, 土壤水分随着土壤深度的增加而增加, 在0-40cm土层内变化较为激烈;在水平方向上, 距果树带越近, 土壤水分含量越少, 但随着带距的增加水分增加直至趋于稳定, 变化曲线呈抛物线状分布; (3)与花生单作对比得出, 复合系统花生土壤水分效应为正值, 说明虽然核桃树和农作物根系的生态位有重叠, 会产生对土壤水分的竞争利用, 但竞争影响并不明显。

    Abstract:

    By taking the typical walnut-peanut intercropping system in the loess region of West Shanxi Province as the study object, the effects of soil moisture in different layers of soil profile (0-100cm) were studied using the traditional weighing method in 2008. Results showed that (1) the seasonal variation of soil moisture was very significant in the intercropping system. (2) Soil moist ure content increased with the increased depth of soil in vertical direction and the variance of soil moisture in 0-40 cm soil layer was strong. Soil moisture content increased with the increase of the distance from treerow and then became stable in horizontal direction. The curve of soil moisture could be described by a parabola equation. (3) Soil moisture had positive effects in the intercropping system, comparing to peanutsole cropping. The analysis indicated that there was an ecological niche overlapping between trees and peanut, which may negatively impact the production of peanut , but the competition between fruit trees and crops was not strong.

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云雷,毕华兴,任怡,马雯静,田晓玲.晋西黄土区核桃花生复合土壤水分效应研究[J].水土保持通报,2009,(5):61-64

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  • 收稿日期:2009-02-19
  • 最后修改日期:2009-03-27
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  • 在线发布日期: 2014-11-26
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