辽西半干旱区膜下滴灌双茬种植试验研究  

Field Experiment of Double Cropping by Mulch-Drip Irrigation in Semiarid Zone of West Liaoning

作　　者：于秀琴 窦超银[2] 孟维忠[2] 董湃[2] 

机构地区：[1]建平县灌溉试验站,辽宁建平122405 [2]辽宁省水利水电科学研究院,辽宁沈阳110003

出　　处：《安徽农业科学》2013年第29期11622-11623,11700,共3页Journal of Anhui Agricultural Sciences

基　　金：水利部科技推广项目(TG1203);农业攻关计划项目(2013-212001)

摘　　要：[目的]研究膜下滴灌双茬种植在辽西地区的可行性。[方法]对玉米一白菜双茬种植进行田间试验，并以单茬玉米种植作为对比，对不同种植条件下灌水量、玉米生长和经济效益等进行对比分析。[结果]双茬种植灌溉7—9次，灌水量较单茬种植明显增加，在316．7～359．3mm，增加了近4倍；单茬种植玉米株高、茎粗和M，高于双茬玉米，在玉米成熟时分别高18．8％、11．6％和18．2％；但在两茬作物共同作用下，双茬种植效益较单茬种植平均增加近40．3％。[结论]在辽西开展双茬种植具有一定的经济可行性。[ Objective] The feasibility of double cropping by mulch-drip irrigation in semiarid zone of west Liaoning was discussed. [ Method] Comparative field experiments of double cropping of corn-cabbage blend and single crop of corn were conducted and their effects on irrigation, plant growth and economic benefits were analyzed. [ Result] The results showed that under double cropping, it irrigated water about 316.7 - 359.3 mm by 7 - 9 times, both obviously more than single crop, especially the water irrigated which increased about 4 times. Single crop has higher stem length, larger stem diameter and better LAI, and at maturity stage, they were about 18.8%, 11.6% and 18.2% more than those of double cropping. However, by the combined effects of each crop of double cropping, it had higher economic benefits about 40.3% more than single crop. [ Conclusion ] Therefore, in economic terms, double cropping has certain feasibility in semiarid zone of west Liaoning.

关 键 词：膜下滴灌 双茬 效益 玉米 

分 类 号：S275.6[农业科学—农业水土工程] S344.4[农业科学—农业工程]