紫花苜蓿耗水规律及其用水效率研究  

Summary of researching on the dynamic regulation of water consumption of alfalfa

作　　者：李浩波[1] 高云英[1] 张景武 刘春和 余有成[1] 惠临风[1] 

机构地区：[1]西北农林科技大学动物科技学院,陕西杨凌712100 [2]户县畜牧兽医工作站,陕西户县710300 [3]洛川县兽医卫生监督检验所,陕西洛川727400

出　　处：《干旱地区农业研究》2006年第6期163-167,共5页Agricultural Research in the Arid Areas

基　　金：陕西省科技攻关项目"紫花苜蓿产业化综合生产技术研究"(2003K02-G16-04;2004K02-G14)

摘　　要：归纳分析国内外不同地域、不同生产方式紫花苜蓿全生长季动态耗水试验研究结果,可以推断：需水量为450～1 100 mm,极端最高可达1 900 mm;耗水量为300～1 450 mm,极端最高可达2 245 mm;需水强度和耗水强度分别为3～7和2～7 mm/d,短期极端最高需水强度为14 mm/d;种植当年,生物产量和经济产量（含水量14%）的水分利用效率分别为8～12,9～14 kg/（mm·hm^2）, 种植2 a及以上的分别为12～25和14～29 kg/（mm·hm^2）.Alfalfa water requirement （WR） and the water consumption （WC） in the whole growth season were about 450-1 100 mm and 300-1 450 mm, respectively, the highest WR and highest WC were 1 900 mm and 2 245 mm, respectively. The ranges of water requirement rates （WRR） and water consumption rates （WCR） of alfalfa during the whole growth season were 3-7 mm/d and 2-7 mm/d, respectively. The highest WRR in a short period was 14 mm/d. The range of the water use efficiencies （WUE） in biomass and economic yield （14% contained with water） of alfalfa in the first planting year were about 8-12 kg/（mm·hm^2） and 9-14 kg/（mm·hm^2） , respectively, in two and more than two planting years were 12-25 kg/（mm·hm^2） and 14 - 29 kg/（mm·hm^2 ）, respectively.

关 键 词：紫花苜蓿 动态耗水规律 水分利用效率 

分 类 号：Q945[生物学—植物学]