枣园间作条件下不同灌水处理对紫花苜蓿产量及水分利用率影响  

Effects of Different Irrigation Water Amounts under Alfalfa/Jujube Intercropping on Yield and Water Use Efficiency of Alfalfa

作　　者：王雪[1] 陈国栋[1] 张金龙[1] 马银虎 周俊俊[1] 万素梅[1] WANG Xue CHEN Guo - dong ZANG Jin - long MA Yin - hu ZHOU Jun - jun WAN Su - mei(College of Plant Science, Tarim University,Alear Xinjiang 843300, Chin)

机构地区：[1]塔里木大学植物科学学院,新疆阿拉尔843300

出　　处：《新疆农业科学》2016年第12期2187-2193,共7页Xinjiang Agricultural Sciences

基　　金：国家自然科学基金项目(31260309;31560377);新疆兵团科技支疆计划项目(2014AB017)~~

摘　　要：【目的】研究塔里木盆地枣园间作紫花苜蓿种植过程中的合理灌水量。【方法】设置4个灌水处理田间试验,研究幼龄枣园不同灌水处理,对紫花苜蓿不同刈割茬次产量及水分利用效率的影响。【结果】随着灌水量的增加,紫花苜蓿产量表现出先增加后下降的变化趋势,第1、2、3茬和全生长季(1~3茬)干草产量差异极显著,苜蓿头茬草产量在W3(5 250 m3/hm^2)时最高,为10 300.52 kg/hm^2;不同灌水量处理下紫花苜蓿水分利用效率有明显差异,第一茬水分利用效率为W1>W2>W3>W4,第二茬水分利用效率为W1>W3>W2>W4,第三茬水分利用效率为W3>W2>W1>W4,总体以第二茬最高,第三茬最低。【结论】W3(5 250 m3/hm^2)灌水条件下,紫花苜蓿田间投入与产出的综合经济效益最好。[ Objective ] In order to explore the reasonable irrigation amount in the planting process of Tar- im Basin alfalfa/jujube intereropping. [ Method ] A field experiment setting 4 irrigation treatments was carried out to study the effects of different irrigation water amounts under young jujube/alfalfa intercropping on alfalfa different cutting crop yield and water use efficiency. [ Result ] The results showed that with the increase of irri- gation amount, the yield of alfalfa showed the changing trend of first increasing and then decreasing, and the hay yield was very significant difference between the first 1,2,3 and the whole growing season （ 1 to 3 ） Alfalfa yield was highest in W3 （5,250 m^3/hm^2）, at a maximum of 10,300.52 kg/hm^2 ; water use efficiency was al- so different, the first crop of alfalfa water use efficiency was W1 〉 W2 〉 W3 〉 W4, the second crop alfalfa water use efficiency W1 〉 W3 〉 W2 〉 W4, third crop alfalfa water use efficiency was W3 〉 W2 〉 W1 〉 W4; On the whole, the second crop was the highest and the third one was the lowest. [ Conclusion ] The comprehensive economic benefit will be the best when the irrigation quantity is W3 （5,250 m^3/hm^2） under al- falfa/jujube intercropping.

关 键 词：枣园 间作 紫花苜蓿 产量 水分利用效率 

分 类 号：S541.1[农业科学—作物学]