紫花苜蓿田间滴灌毛管布置优化  

Layout Optimization of Drip Irrigation Capillary in Alfalfa Field

作　　者：刘洪波 白云岗 张江辉 曹彪 肖军 Liu Hongbo;Bai Yungang;Zhang Jianghui;Cao Biao;Xiao Jun(Xinjiang Research Institute of Water Resources and Hydropower,Urumqi 830049)

机构地区：[1]新疆水利水电科学研究院,乌鲁木齐830049

出　　处：《中国农学通报》2018年第35期135-142,共8页Chinese Agricultural Science Bulletin

基　　金：水利部技术示范项目“新疆牧区饲草高效节水技术集成与示范”(SF-201733)

摘　　要：为了进行苜蓿浅埋滴灌技术的推广与示范,确定出适宜的苜蓿优质高产的浅埋滴灌布置方式,通过建立数学模型,利用Hydrus-2D软件模拟田间毛管不同埋深和不同间距下的水分入渗特征,采用大田试验进行验证,与模拟结果进行对比分析。结果表明:HYDRUS-2D模拟结果可靠,可用于模拟苜蓿地下滴灌土壤水分运移规律,鉴于埋深5 cm和埋深20 cm时,间距为60 cm时能获得较优产量,且产量相差不大,且由于埋深为5 cm时更容易进行浅埋作业,建议在该地区采用地下滴灌埋深为5 cm,毛管间距为60 cm的布置方式。The paper aims to promote and demonstrate the shallow subsurface drip irrigation of alfalfa,and optimize its scheme for alfalfa production with superior quality and high yield.We established a mathematical model,simulated the infiltration characteristics under different buried depths and separation distances of underground drip irrigation in field by using the HYDRUS-2D model,and conducted the field experiment for verification and comparative analysis of the simulation results.The results showed that:the numerical simulation with HYDRUS- 2D was reliable,and it was a suitable method to simulate the soil moisture movement in alfalfa field; higher yield was obtained with buried depth of 5 cm and 20 cm,and separation distance of 60 cm.As the yield is similar between the buried depth of 5 cm and 20 cm,and subsurface drip irrigation is easy to be conducted with the depth of 5 cm,it is suggested that the layout of buried depth of 5 cm and separation distance of 60 cm should be taken in this area.

关 键 词：紫花苜蓿 滴灌 埋深 布置优化 

分 类 号：S152.7[农业科学—土壤学]