检索结果-南通市图书馆

Effect of Crop Root on Soil Water Retentivity and Movement

American Journal of Plant Sciences 2012年第12期3卷 1782-1787页

作者： Kozue Yuge Keiki Shigematsu Mitsumasa Anan Shinogi Yoshiyuki Faculty of Agriculture Kyushu University Fukuoka Japan Graduate School of Bioresource and Bioenvironment Science Kyushu University Fukuoka Japan takasaki sogo consultant co. Ltd. Kurume Japan

The objective of this study was to clarify the effect of crop root on soil water retentivity and movement to improve the crop growth environment and irrigation efficiency. To simulate soil water movement co.sidering the crop root effect on the physical properties of soil, a numerical model describing the soil water and heat transfers was introduced. Cultivation experiments were co.ducted to clarify the effect of the crop root on soil water retentivity and verify the accuracy of the numerical model. The relationship between soil water retentivity and the root co.tent of soil samples was clarified by soil water retention curves. The soil water co.tent displayed a high value with increasing crop root co.tent in the high volumetric water co.tent zone. The experimental results indicated that the saturated water co.tent increased with the crop root co.tent because of the porosity formed by the crop root. The differences of the soil water retentivity became smaller when the value of the matric potential was over pF 1.5. To verify the accuracy of the numerical model, an observation using acrylic slit pot was also co.duced. The temporal and spatial changes of the volumetric water co.tent and soil temperature were measured. Soil water and heat transfers, which co.sidered the effect of the crop root on the soil water retentivity clarified by the soil water retention curves, were simulated. Simulated volumetric water co.tent and temperature of soil agreed with observed data. This indicated that the numerical model used to simulate the soil water and heat transfer co.sidering the crop root effect on soil water retentivity was satisfactory. Using this model, spatial and temporal changes of soil water co.tent were simulated. The soil water co.dition of the root zone was relatively high co.pared with the initial co.ditions. This indicated that the volumetric water co.dition of the root zone increased with the soil water extraction and high soil water co.ditions was maintained becau

关键词： Water co.sumption Soil Water Heat Transfer Numerical Model Irrigation Water Saving

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：