检索结果-南通市图书馆

Effects of Conservation agriculture on Land and Water Productivity in Yellow River Basin, China

International Journal of Agricultural and Biological Engineering 2010年第2期3卷 5-17,I0001页

作者： Vinay Nangia Mobin-ud-Din Ahmad Du Jiantao Yan Changrong Gerrit Hoogenboom Mei Xurong He Wenqing Liu Shuang Liu Qin agriculture and Agri-Food Canada OttawaONCanada CSIRO Land and WaterDivision CanberraACT2601Australia Institute of Environmental and Sustainable Development in agriculture Chinese Academy of Agricultural ScienceBeijing 100081China Department of Biological and Agricultural Engineering University of GeorgiaGriffinGAUSA

In the dryland regions of North China,water is the limiting factor for rainfed crop *** agriculture(featuring reduced or zero tillage,mulching,crop rotations and cover crops)has been proposed to improve soil and water conservation and enhance yields in these *** agriculture systems typically result in increased crop water availability and agro-ecosystem productivity,and reduced soil *** evaluate the potential of conservation agriculture to improve soil water balance and agricultural productivity,the DSSAT crop model was calibrated using the data of a field experiment in Shouyang County in the semi-arid northeastern part of the Yellow River *** average annual precipitation at the site is 472 mm,75%of which falls during the growing *** site had a maize-fallow-maize *** from two crop seasons(2005 and 2006)and four treatments for calibration and analysis were *** treatments were:conventional tillage(CT),no-till with straw mulching(NTSM),all-straw incorporated(ASRT)and one-third residue left on the surface with no-till(RRT).The calibration results gave satisfactory agreement between field observed and model predicted values for crop yield for all treatments except RRT treatment,and for soil water content of different layers in the 150 cm soil profile for all *** difference between observed and predicted values was in the range of 3%-25%for maize yield and RMSE was in the range of 0.03-0.06 cm^(3)/cm^(3) for soil water content measured periodically each cropping *** these results are encouraging,more rigorous calibration and independent model evaluation are warranted prior to making recommendations based on model ***-term simulations(1995-2004)were conducted for three of the treatments using the calibrated *** NTSM and ASRT treatments had similar or higher yields(by up to 36%),higher crop water productivity by up to 28%and reduced runoff of up to 93%or 43 mm comp

关键词： tillage conservative agriculture soil and water conservation mulch residues CERES model DSSAT model

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：