川中丘陵区不同母质发育的紫色土水分特征  

Water Characteristics of Purple Soil Derived from Different Parent Materials in Central Hill Region of Sichuan Basin

作　　者：刘敏[1,2] 赵燮京[1] 王昌全[2] 杨谢[1,2] 

机构地区：[1]农业部长江上游农业资源与环境重点开放实验室,四川成都610066 [2]四川农业大学资源环境学院,四川雅安625014

出　　处：《山地学报》2006年第B10期110-113,共4页Mountain Research

基　　金：农业结构调整重大技术研究专项（项目编号：05-12-02B）资助

摘　　要：通过测定川中丘陵区三种主要母质（沙溪庙组灰棕紫色砂泥岩、遂宁组红棕紫色泥砂岩及蓬莱镇组暗紫色砂泥岩）发育的紫色土的耕作层土壤水分特征曲线及其相关物理性质，并结合冬小麦耗水量盆栽实验，比较了基于不同母质条件下的三种主要紫色土耕作层土壤的水力特征差异。结果表明：本研究区二台土上由三种不同母质发育的土壤其持水性为棕紫泥土（蓬莱镇组）〉灰棕紫泥土（沙溪庙组）〉红棕紫泥土（遂宁组）；有效水含量及对冬小麦的水分有效性为灰棕紫泥土（沙溪庙组）〉棕紫泥土（蓬莱镇组）〉红棕紫泥土（遂宁组）；全生育期内耗水量为灰棕紫泥土（沙溪庙组）〉红棕紫泥土（遂宁组）〉棕紫泥土（蓬莱镇组）。The aim of the article wasto study on water characteristics of purple soil derived from formation of J2s, J3s, J3pby determined soil moisture characteristic curves, correlative physical properties and water consumption experiment of potted wheat. The result shows that the three soil on the second mesa in the study area, the changing trend of soil water retention（WR） was：the WR of the brown purple soil was highest and the WR of red-brown purple soil was lowest;the changing trend of the effective water contention（EWC） was：the EWC of the gray-brown purple soil was highest and the EWC of the red-brown purple soil was lowest; the changing trend of the total water consumption of the wheat（TWC） was：the TWC of the gray-brown purple soil was highest and the TWC of the brown purple soil was lowest.

关 键 词：母质 紫色土 耕作层 水分特征曲线 耗水量 

分 类 号：S155.25[农业科学—土壤学]