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作 者:尹光华[1] 沈业杰[1,2] 张法升[1,2] 佟娜[1,2] 刘作新[1]
机构地区:[1]中国科学院沈阳应用生态研究所,沈阳110016 [2]中国科学院研究生院,北京100049
出 处:《中国农学通报》2010年第23期177-180,共4页Chinese Agricultural Science Bulletin
基 金:辽宁省农业攻关计划重大项目(2008212003);辽宁省博士启动基金课题(20071014);辽宁省节水农业重点实验室基金课题(06ZDS11001)
摘 要:此文针对辽西半干旱区农业生产因年降水量少且分布不均,使得春玉米种植低产低效的问题,集成了覆膜保苗节水模式和露地坐水种补灌节水模式,并对两种模式在田间进行了应用效果验证。应用结果表明,两种模式应用较对照均能显著提高籽粒产量、水分利用效率及经济效益:产量分别较对照增加48.5%和49.9%,水分利用效率提高30.9%和21.4%,经济效益增加34.7%和33.7%。集成模式适宜于试验区玉米生产中推广应用。Crop yield and economic benefit are very low because of low annual precipitation and its uneven distribution in semi-arid area,west Liaoning.This study aimed to seek suitability of some key water-saving techniques and their integrating patterns.Two patterns were integrated.Of which,one named the water-saving planting pattern of film mulching and limited supplementary irrigation grates in mulching cultivation.While another was called the water-saving planting pattern of irrigating-sowing and limited supplementary irrigation in open cultivation.It showed that the yield,water use efficiency and economic benefits using the two patterns were higher than checked by 30.9% and 21.4%,48.5% and 49.9%,34.7% and 33.7%,respectively.It also suggested that these two patterns were suitable for the semi-arid area of west Liaoning.
关 键 词:辽西半干旱区 技术集成模式 产量 水分利用效率 经济效益
分 类 号:S318[农业科学—作物栽培与耕作技术]
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