旱地冬小麦不同覆盖模式土壤温度变化动态研究  

The Dynamic Variation of Soil Temperature on the Dryland Winter Wheat under Various Mulching Models

作　　者：党占平[1] 

机构地区：[1]杨凌职业技术学院,陕西杨凌712100

出　　处：《中国农学通报》2009年第19期319-322,共4页Chinese Agricultural Science Bulletin

基　　金：国家自然科学基金重点项目(30230230);国家自然科学基金项目(40471069)

摘　　要：为探索旱地冬小麦不同覆盖模式下土壤温度的变化规律,通过田间试验,对平覆地膜穴播、垄上覆膜垄沟覆草、覆草和常规露地4种栽培模式下的土壤温度进行测定,结果表明:随冬小麦生育期延后和土层深度增加,覆盖栽培的增温幅度减小。平膜覆盖栽培返青期前能够显著提高0～25cm各土层温度,垄膜覆盖栽培在越冬前能够有效提高表层土壤温度,覆草栽培仅在出苗期有一定的增温效应,返青期以后表现为负效应。In order to search the variety regulation of soil temperature under different mulching models, according to the experiments in fields, soil temperature under four treatment of film mulching and hole sowing, furrow-film mulching, straw mulching and no mulching of winter wheat in dryland was studied. The results showed that ranges of soil temperature increasing reduced with the increasing of soil depth and growth forward of winter wheat. Film mulching and hole sowing cultivation remarkably increase 0-25 cm soil temperatures before green-turning stage, furrow-film mulching cultivation effective increase surface layer soil temperatures before winterovering stage, straw mulching cultivation has effect of increasing soil temperature in seedling stage, but decreasing soil temperature after green-turning stage.

关 键 词：旱地 冬小麦 覆盖模式 土壤温度 

分 类 号：S156.92[农业科学—土壤学]