水肥调控对滴灌棉花光合特性的影响  

Influence of Regulation and Control of Irrigation and Fertilization on Photosynthetic Characteristics of Cotton under Drip Irrigation

作　　者：翟云龙[1] 郑德明[1] 宋敏[2] 柳维杨[1] 王家强[1] 

机构地区：[1]塔里木大学植物科学学院塔里木大学棉花研究所,新疆阿拉尔843300 [2]新疆生产建设兵团农业技术推广总站,新疆乌鲁木齐830011

出　　处：《节水灌溉》2009年第10期25-27,33,共4页Water Saving Irrigation

基　　金：新疆生产建设兵团科技攻关项目(2006GG21)

摘　　要：研究了水肥调控对滴灌棉花光合特性的影响。结果表明:高产条件下施足基肥,适当提早头水和施肥时间、推迟停水停肥时间,根据墒情均匀给水、给肥可以使叶面积指数前期稳步上升,后期缓慢回落;可以增加净光合速率,减缓后期光合速率降低速度;盛铃期光合速率日变化呈单峰曲线变化,峰值出现在13∶00-15∶00时。SPAD值现蕾至吐絮呈"高-低-高"的趋势,吐絮期最高。The influence of regulation and control of irrigation and fertilization on the photosynthetic characteristics of cotton under drip irrigation is studied in this paper. The result shows that under high-yield condition, the method of sufficiently applying base fertilizer, advancing the time of the first irrigation and fertilization, putting off the time of stop irrigating, and equable irrigation and fertilization according to soil moisture can make leaf areas index raise steadily in prophase and return tardily in anaphase and increase photosynthetic rate and slower the slowdown of photosynthetic rate in anaphase. The diurnal variations of photosynthesis rate of cot- ton presents obviously single-peaked curve at boll filling stage and the peak value appear at 13：00 to 15：00. The SPAD value presents obviously the direction of ＂high-low-high＂ and the tiptop is at boll-blowing stage.

关 键 词：水肥调控 滴灌 棉花 光合作用 

分 类 号：S562[农业科学—作物学]