早春地膜双季青贮玉米物质生产及其资源生产效率的研究  

Study on the Characteristic of Material Production and Resources Efficiency of Plastic Film Cultivation in Double-cropping Silage Maize System

作　　者：王美云[1] 赵明[2] 任天志[3] 李立娟[2] 

机构地区：[1]中国农业大学农学与生物技术学院,北京100193 [2]中国农业科学院作物科学研究所,北京100081 [3]中国农业科学院农业资源与区划研究所,北京100081

出　　处：《玉米科学》2008年第4期127-129,134,共4页Journal of Maize Sciences

基　　金：农业结构调整重大技术研究专项“主要农作物高产栽培关键技术与农作制度研究”(06-03-02B);国家“十一五”科技支撑计划粮食丰产科技工程项目“三大作物可持续超高产共性理论与技术模式研究”(2006BAD02A13)

摘　　要：针对两熟农业区畜牧业发展对青贮玉米需求不断增加,在两熟热量限制的北京地区建立了双季青贮玉米的新型生产技术模式,通过采取早春季节的地膜覆盖技术研究了双季青贮玉米物质生产与资源生产效率。结果表明,早春地膜栽培技术提高了青贮玉米鲜产量15.6%,物质生产提高29.9%;早春季节地膜在当季提高温度生产率、光照生产效率、水分生产效率均达30%以上,全年平均在15%左右。早春地膜是提高双季青贮玉米高产高效的有效技术途径。As the requirement increase of silage maize for livestock developing in agricultural region, it is more and more important for silage maize production on high yield and resource used efficiency. In order to explore the new silage maize production system with high yield and high resource used efficiency, plastic film cultivation experiments of two-cropping silage maize system were conduced in 2005 in Beijing. The characteristics of dry material production, accumulate temperature and radiation efficiency was analysis. The results showed that plastic film cultivation in early spring of two-cropping silage maize system had high yield and high resource efficiency. It＇s fresh weight yield and material production were improved at 15.6% and 29.9%. Under drought and low temperature condition the accumulation of dry matter and increase of leave area index was faster in plastic film cultivation than that of directly showing cultivation. The used efficiencies of effective accumulate temperature, nature rainfall and tall radiation was more than 30% in plastic film cultivation than that of directly showing cultivation, annual average at 15%. It implied that plastic film cultivation was a good way for two-cropping silage maize system to have high yield and high resources used efficiency.

关 键 词：青贮玉米 地膜栽培 物质生产 资源效率 

分 类 号：S513.04[农业科学—作物学]