排灌机械工程学报2016，Vol.34Issue(8)：703-708,6.DOI:10.3969/j.issn.1674-8530.16.0024
泾惠渠灌区作物需水量特征及影响因素
Crop water requirement and influence factors in Jinghui Canal irrigation district
摘要
Abstract
The transpiration and evaporation,and irrigation water requirement change of winter wheat and maize were analyzed by using CROPWAT model.The correlation coefficient of crop water require-ment with meteorological factors were calculated by using SPSS software.The results show that the ave-rage transpiration and evaporation of winter wheat was 634.04 mm in the whole growth period,and the peak appeared in the middle of April to mid-May,the whole irrigation area had the same trend of tran-spiration and evaporation of winter wheat;the average transpiration and evaporation of maize was 525.22 mm,and the peak appeared in the middle of July to late August,the maximum was 535.97 mm in Sanyuan and the minimum was 514.68mm in Fuping.Irrigation water requirement of winter wheat in the sowing-over wintering stage was minimum,and that in the turning green -jointing stage increased.Irrigation water requirement of corn in the tasseling -flowering stage was 133.04 mm.July -August was for the grain formation -milk stage,water requirement was 359.15 mm,until late Septem-ber,corn irrigation water requirement dropped off.Crop water requirement was positively correlated with temperature,while it was negatively correlated with precipitation and it was less correlated with wind speed and relative humidity.Temperature,sunshine time and relative humidity are the main fac-tors influencing the crop water requirement.关键词
泾惠渠灌区/冬小麦/玉米/灌溉需水量/生育期Key words
Jinghui Canal irrigation district/winter wheat/maize/irrigation water requirement/whole growth period分类
农业科技引用本文复制引用
宋扬,李慧,周维博,董起广..泾惠渠灌区作物需水量特征及影响因素[J].排灌机械工程学报,2016,34(8):703-708,6.基金项目
“十二五”国家科技支撑计划项目 （）
