摘要
通过比较分析东北、西北春播玉米区、华北、黄淮夏播玉米区不同频率年玉米全生长期降水量(有效)、逐月降水量与相应时段需水量的关系,引入缺水率,评价各区域玉米生长期的干旱缺水状况;在此基础上,对玉米生长期干旱与灌溉投入问题进行简要分析,为国家现代玉米产业技术体系玉米增产目标的实现提供参考。
By compared with relationship between precipitation and crop water requirement in each month and whole growth period for spring maize and summer maize under different hydrological years in china, and introduced water deficient ratio, the situation of drought in each area was evaluated in this paper. Based on this, drought in growth period of maize and the problems of irrigation input were briefly analyzed for providing the reference to realization of objectives which was yield increasing of maize.
出处
《灌溉排水学报》
CSCD
北大核心
2009年第5期21-24,共4页
Journal of Irrigation and Drainage
基金
现代农业产业技术体系建设专项资金和国家科技基础性工作专项共同资助(2007FY120100)
关键词
玉米
干旱
降水量
缺水率
灌溉投入
maize
drought
precipitation
water deficient ratio
irrigation input
