不同滴灌处理下紫花苜蓿的耗水特征及作物需水量的估算  

Water Consumption Characteristic and Water Requirement Calculation of Alfalfa under Different Drip Irrigation Treatments

作　　者：曹雪松[1,2] 李和平[1,2] 郑和祥[1,2] 王军[1,2] 冯亚阳[3] 

机构地区：[1]水利部牧区水利科学研究所,呼和浩特010020 [2]中国水利水电科学研究院,北京100038 [3]内蒙古农业大学,呼和浩特010018

出　　处：《节水灌溉》2016年第12期15-19,共5页Water Saving Irrigation

基　　金：水利部科技推广计划项目(TG1401);内蒙古自治区新增"四个千万亩"节水灌溉工程科技支撑项目(20121036);中国水利水电科学研究院科研专项(MK2014J06)

摘　　要：在鄂尔多斯地区对太阳能光伏提水地埋滴灌紫花苜蓿进行了需水规律的田间试验研究。试验设置高水分（30 mm）、中水分（22.5 mm）和低水分（15 mm）3个处理,采用FAO-56推荐的单、双作物系数法计算了作物需水量,并和实测值进行了对比。结果表明,太阳能光伏提水地埋滴灌紫花苜蓿条件下双作物系数法更接近实测值;作物耗水量主要取决于灌水量,呈正相关;建议采用中水分处理（22.5 mm）的灌溉制度,灌水周期4~5 d,遇到降水时灌水日期顺延,整个生育期的需水量为460 mm。The field test study on water requirement regulation of alfalfa under buried drip irrigation through solar photovoltaic water pumping is made in Ordos area. The test set three treatments, including the high moisture content （ 30 mm） treatment, moisture （ 22.5 mm） treatment and low moisture （ 15 mm） treatment. The crop water requirement is calculated by using a single and dual crop coefficient method recommen- ded by FAO-56. The calculation values were compared with the measured values. The results show that the value by using dual crop coeffi- cient approach is closer to the measured value under the conditions of buried drip irrigation through solar photovohaie water pumping; the crop water consumption depends mainly on irrigation amount and there is a positive correlation between crop water consumption and irrigation amount; it is recommended that the moisture treatment （22.5 mm） is used for irrigation system, and the irrigation period is 4~ 5d, irrigation dates is postponed when encountering precipitation, and the water demand throughout the growing period is 460 mm.

关 键 词：太阳能 地埋滴灌 紫花苜蓿 作物需水规律 

分 类 号：S275.6[农业科学—农业水土工程]