膜下滴灌棉田墒情监测点的横向定位研究  

Study on Lateral Orientation of Soil Moisture Monitoring Points for Cotton Field under Drip Irrigation under Mulch

作　　者：李芳松[1] 雷晓云[1] 周世军[1] 潘婷[1] 陈坤[1] 

机构地区：[1]新疆农业大学水利与土木工程学院,乌鲁木齐830052

出　　处：《节水灌溉》2011年第4期4-6,10,共4页Water Saving Irrigation

基　　金："十一五"国家科技支撑计划项目(2007BAD38B05);新疆高技术研究与发展计划项目(200712111);滴灌棉田土壤水分空间变异机理及水分传感器布设方法研究项目(51060002);新疆水文水资源重点学科建设基金

摘　　要：2009年,在新疆库尔勒包头湖农场智能化棉花膜下滴灌工程示范区,以膜下滴灌棉田单膜控制区域的土壤含水率数据为基础,研究了膜下滴灌棉田墒情监测点的定位问题。本文选择了典型的一膜一管四行模式种植的一膜棉花为试验区（共计20个监测点）,测定各个采样点以及4层深度（0~20 cm,20~40 cm,40~60 cm及60~80 cm）的土壤含水率。经过t检验分析发现,在表层0~60 cm深度范围内,距滴灌带0.225 m0、.350 m、0.475 m处的土壤含水率与滴灌带处的土壤含水率无显著性差异;在距滴灌带0.675 m处（膜间沟）与滴灌带处的土壤含水率有显著性差异。结果表明：在布设土壤墒情监测点时,应布设在距离滴灌带0~0.475 m的范围内比较好,不宜布设在膜间沟处,最佳布设位置在距离滴灌带0.475 cm处。In the 2009 year,the lateral orientation of soil moisture monitoring points for cotton field under drip irrigation under mulch was analyzed based on the data of soil moisture content in a drip irrigation under mulch demonstration area in Baotou-lake Farm of Korla City of Xinjiang Region.The 20 sample points of soil moisture were measured by soil auger and oven drying method.For each point,the soil moisture content was measured on four depths（0~20 cm,20~40 cm,40~60 cm and 60~80 cm）.Through t test,It was found that there were no significant differences for soil moisture content among at the drip irrigation belt and the horizontal distances of 0.225 m,0.35 m or 0.475 m from the drip irrigation belt.There were significant differences between at the drip irrigation belt and at the distance of 0.675 m from the drip irrigation belt.The results showed that the soil moisture observation point should be deployed at 0.225 m,0.35 m or 0.475 m from the belt.The best observation location should be deployed at 0.475m from the drip irrigation belt.

关 键 词：膜下滴灌 棉花 监测点 横向定位 显著性检验 

分 类 号：S152.7[农业科学—土壤学]