摘要
干旱是制约春玉米产量提高的主要影响因素。根据土壤水量平衡分析,中国春玉米带生长期缺水量从东向西逐渐增高。哈尔滨、长春、沈阳以东地区缺水量在50 mm以下,由此向西逐渐增高,在甘肃河西地区,达到最高值500 mm。据此春玉米主产区可划分为雨养区、灌溉补偿区、干旱区。针对每个区域的具体情况,提出相应的灌溉制度与节水灌溉技术组合,为春玉米增产节水提供参考依据。
Drought is the main influencing factor,which restricts high yield of spring maize.On the basis of soil water balance analysis,the water deficit amount of spring maize in whole growth season increases gradually from the east to west in China.The water deficit amount in the eastern areas of Harbin,Changchun and Shenyang,is below 50mm,from which it increases gradually to the west,and the maximum is 500mm in the Hexi region of Gansu Province.According to the water shortage of spring maize belt,it can be divided into rain-fed area,supplement irrigation area and arid area.In view of each area＇s situation,the suitable combination pattern of irrigation schedule and water saving irrigation technique are proposed for providing the reference to water saving and yield increasing of spring maize.
出处
《节水灌溉》
北大核心
2010年第4期1-3,7,共4页
Water Saving Irrigation
基金
现代农业产业技术体系建设专项资金
国家科技基础性工作专项“中国农业气候资源数字化图集编制”(2007FY120100)共同资助
关键词
春玉米
缺水量
灌溉制度
节水灌溉技术
spring maize
water deficit amount
irrigation schedule
water saving irrigation technique
