北疆滴灌复播青贮玉米耗水规律初步研究  

Preliminary Study on Water Consumption Characteristics of Multiple Silage Corn under Drip Irrigation Condition in Northern Xinjiang

作　　者：宋常吉[1] 郑旭荣[1] 王振华[1] 葛宇[1] 姜国军[1] 

机构地区：[1]石河子大学水利建筑工程学院现代节水灌溉兵团重点实验室,新疆石河子832003

出　　处：《节水灌溉》2012年第8期19-22,共4页Water Saving Irrigation

基　　金：国家科技支撑计划项目(2011BAD29B06);兵团重大农业产学研科研专项(2010ZX01-3);石河子大学重大科技攻关项目(gxjs2010-zdgg03-03)

摘　　要：通过2011年滴灌复播青贮玉米小区试验,试验设置了165、210、255、300、345mm 5个水分处理,研究了不同灌溉定额下滴灌复播青贮玉米耗水规律及生长特性。试验结果表明:整个生育期内耗水强度呈现由低到高再到低的变化趋势,拔节期和抽雄吐絮期的耗水强度分别达到7.00～16.99mm/d和4.37～7.81mm/d,拔节期和抽雄吐絮期为需水关键期;通过试验数据拟合认为滴灌复播青贮玉米灌水定额在313.6～417.61mm较为适宜。Drip Irrigation experiment on multiple cropping silage corn in field was carried out to study water consumption characteris- tics in 2011. Five water treatments, as 165, 210, 255, 300 and 345 mm irrigation amount, were set to research the water consump- tion characteristics and the growth characteristic of multiple cropping silage corn under different irrigation quotas. The experiment result showed that the water consumption rate of corn changed from low to high to low, the water consumption rate reached 7. 00- 16.99 mm/d in jointing stage and 4. 37-~7. 81 mm/d in bolls tasseling stage. Both the jointing stage and tasseling stage were the critical water requirement periods. Through the experiment data fitting, it could be concluded that the irrigation quota of 313. 6- 417.61 mm is more appropriate for multiple cropping silage corn.

关 键 词：北疆 滴灌 复播青贮玉米 耗水规律 

分 类 号：S275[农业科学—农业水土工程]