农业工程学报2012，Vol.28Issue(3)：81-86,6.DOI:10.3969/j.issn.1002-6819.2012.03.015
暗管排水对大棚土壤次生盐渍化改良及番茄产量的影响
Improvement effect of subsurface drainage on secondary salinization of greenhouse soil and tomato yield
摘要
Abstract
In order to solve the problem of secondary salinization of greenhouse soil, a subsurface drainage system was set up with plastic bellows buried in the soil of the greenhouse to probe into the measures against secondary salinization of soil, and to study the changes of soil basic physicochemical properties through subsurface drainage. Soil electrical conductivity (EC), soil saturated hydraulic conductivit, bulk density, porosity and yield of tomato were studied. The system was installed with two arrangements, space of 6 m and depth of 40 cm; space of 8 m and depth of 70 cm. Results showed that the subsurface drainage system lowered the EC of different soil layers, especially the EC of soil which above the subsurface drainage. Meanwhile, saturated hydraulic conductivity of soil increased, bulk density decreased, but bulk porosity increased. The tomato yield increased as the average weight of single fruit increased. All these indicators of the system with space 8 m and depth 70 cm were better than those of the system with space 6 m and depth 40 cm. It is concluded that the effect of drainage system with space 8 m and depth 70 cm on improvement of soil secondary salinization was more significant than that of the system with space 6 m and depth 40 cm in greenhouse.关键词
灌溉/排水/土壤含水率/次生盐渍化/电导率/番茄/产量Key words
irrigation/drainage/soil moisture/secondary salinization/electrical conductivity/tomato/yield分类
农业科技引用本文复制引用
张洁,常婷婷,邵孝侯..暗管排水对大棚土壤次生盐渍化改良及番茄产量的影响[J].农业工程学报,2012,28(3):81-86,6.基金项目
国家自然科学基金(51009047) （51009047）
江苏省自然科学基金(BK2009342) （BK2009342）
公益性行业(农业)科研专项经费(200903001) （农业）
中央高校基本科研业务费(2011B02114) （2011B02114）
