秸秆覆盖畦田灌溉水流特性及灌水质量分析  

Analysis of Water Flow Performance and Irrigation Efficiency of Boder Irragation under Straw Mulch

作　　者：吕雯[1] 汪有科[2] 许晓平[3] 

机构地区：[1]宁夏大学新技术应用研究开发中心,银川750021 [2]中国科学院水利部水土保持研究所,陕西杨凌712100 [3]西北农林科技大学,陕西杨凌712100

出　　处：《水土保持研究》2007年第2期236-238,共3页Research of Soil and Water Conservation

基　　金：国家"863"节水农业重大专项(2002AA2Z4211)

摘　　要：在陕西杨凌张家岗村覆盖玉米秸秆的冬小麦地进行了畦田规格和灌水技术要素对灌水效率和灌溉均匀度影响的田间试验，并SRFR406软件对秸秆覆盖畦灌的水流推进进行了数学模拟。结果表明，给出的地面灌溉模型及软件可较好的模拟秸秆覆盖畦田水流运动。畦田规格与技术要素的选择对灌水效率及灌水均匀度均有影响。在覆盖秸秆畦田以畦长小于50m，畦宽2～3m，单宽流量以6～8L／（m·s），坡度以3go～5‰为宜。为提高秸秆覆盖灌水效率，应加强耕作管理，消除反坡。Field experiments were conducted to investigate the influences of border dimensions and irrigation variables on the performance of water advance under straw mulch,irrigation efficiency and distribution uniformity（DU）. The commercial software, namely SRFR406,was used to simulate the performance of water advance. The results showed that the code simulated the performance of water advance successfully. The border dimensions had influences to application efficiency,borders having 2-3 m wide , not more than 50 m long ,inflow rate of unit width is from 6 L/（m·s） to 8 L/（m · s）, and border slope is from 3‰ to 5‰ can get high application efficiency.

关 键 词：秸秆覆盖 地面灌溉 水流特性 灌水技术要素 灌溉效率 灌水均匀度 

分 类 号：S274.2[农业科学—农业水土工程]