摘要
试验研究了豫北地区冬小麦耗水规律。结果表明,分蘖期和孕穗—扬花期是冬小麦生育期需水的2个高峰,后一阶段需水量约占全生育期需水量的65%;利用动态规划的方法对Jensen模型进行求解,制定该地区不同水文年不同灌溉定额条件下的非充分灌溉制度,在来水不足的情况下,应保证拔节期和灌浆期的灌水;在来水充足的情况下,应保证拔节期、灌浆期、苗期和返青期的灌水。
The winter wheat water consumption in north Henan Province was studied in the paper,it was showed that stooling stage and booting stage were two peaks of whole growth stage water consumption,the latter was 65% of the whole water consumption.In the paper,Jensen model was solved by dynamic programming and insufficient irrigation system was established on the condition that different hydrological years and different irrigation norms in this area,it was show that jointing stage and filling stage should be irrigated firstly under the condition of water shortage,and when water was sufficient,the water of the seeding stage and turning green stage should be guaranteed.
出处
《灌溉排水学报》
CSCD
北大核心
2012年第2期62-65,共4页
Journal of Irrigation and Drainage
基金
农业部作物需水与调控重点开放实验室基金项目(CWRR200908)
华北水利水电学院高层次人才科研启动项目(200918)
关键词
冬小麦
耗水规律
灌溉制度
动态规划
不同水文年
winter wheat
water consumption
dynamic programming
irrigation system
different hydrological years
