Variation of Soil Moisture Under Potato Cropping and Its Influences on Yield in Mountainous Area of Southern Ningxia Hui Autonomous Region

ZHANG Qing-xia; SONG Nai-ping; WANG Lei; CHEN Lin

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Variation of Soil Moisture Under Potato Cropping and Its Influences on Yield in Mountainous Area of Southern Ningxia Hui Autonomous Region

- Variation of Soil Moisture Under Potato Cropping and Its Influences on Yield in Mountainous Area of Southern Ningxia Hui Autonomous Region
- Bulletin of Soiland Water Conservation Vol. 29, Issue 6, Pages: 81-85(2010)
- 作者机构：
  
  1. 西北退化生态系统恢复与重建教育部重点实验室,宁夏,银川,750021
  2. 宁夏大学西部生态研究中心,宁夏,银川,750021
  3. 宁夏大学资源环境学院,宁夏,银川,750021
- 作者简介：
- 基金信息：
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- Published：2010
- 稿件说明：
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ZHANG Qing-xia, SONG Nai-ping, WANG Lei, et al. Variation of Soil Moisture Under Potato Cropping and Its Influences on Yield in Mountainous Area of Southern Ningxia Hui Autonomous Region[J]. Bulletin of Soiland Water Conservation, 2010, 29(6): 81-85.
DOI：

ZHANG Qing-xia, SONG Nai-ping, WANG Lei, et al. Variation of Soil Moisture Under Potato Cropping and Its Influences on Yield in Mountainous Area of Southern Ningxia Hui Autonomous Region[J]. Bulletin of Soiland Water Conservation, 2010, 29(6): 81-85. DOI：

摘要

采用定位观测的方法

探讨了宁南山区马铃薯连作田土壤水分变化规律及其对产量的影响。试验结果表明

试验区内土壤贮水量的年际变化呈正抛物线形变化

春秋高

春末夏初达到谷值。土壤含水量的动态变化主要取决于全年降雨分配和蒸发的平衡过程

整个生育期土壤含水量变化在9.95%～21.6%之间。0—100cm层土壤贮水量与产量之间具有显著的相关性

土壤贮水量与马铃薯产量相关关系最显著的时期为发棵期和结薯期

此时也是马铃薯生长耗水的高峰期

在此期间0—100cm土壤贮水量每增加10mm

产量平均可增加135～270kg/hm

。

Abstract

Based on the data observed in fixed location

the variation of soil moisture and its influences on potato yield in the mountainous area of South Ningxia Hui Autonomous Region was investigated.Experimental results indicate that the annual variation of soil moisture content presents a positive parabola shape

which is high in spring and autumn and reaches a bottom in early summer.Dynamic change of soil moisture is mainly dependent on the balance process between the seasonal distribution of annual rainfall and evaporation.Dynamics of soil moisture varies from 9.95% to 21.6% in the whole growth period.The soil moisture content in 0—100 cm soil layer is most remarkably correlated with potato yield.The most remarkable correlation with potato yield is observed in branching period and fruit period which are the peaks of potato water consumption.In this stage

10 mm increase of soil moisture in the layer may increase potato yield by 135~270 kg/hm2.

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