吉林省春玉米大面积增产与资源增效限制因素评估  

Assessment of Limiting Factors on High Yield of Large-scale Spring Maize Production and High Efficiency of Resource in Jilin Province

作　　者：闫孝贡[1] 刘剑钊[1] 张洪喜[1] 袁静超[1] 蔡红光[1] 任军[1] 

机构地区：[1]吉林省农业科学院农业资源与环境研究所,长春130033

出　　处：《吉林农业科学》2012年第6期9-11,24,共4页Journal of　Jilin Agricultural Sciences

基　　金：吉林省科技支撑重大专项(20106025和20126026);吉林省玉米产业技术体系项目(201202)

摘　　要：本研究通过对吉林省三大玉米生产区大面积增产与水肥等资源增效的限制因子的权重分析,明确吉林省各区域大面积增产增效的主要限制因子及其解决途径的贡献比率。结果表明,限制吉林省玉米大面积增产与资源增效的因素主要表现为季节性干旱、土壤质量退化和技术集成落后等3个方面,其限制权重分别为19.0%、16.3%和23.2%。针对上述限制因子,通过改进栽培措施、高产土壤定向培肥及配套技术的优化集成,可同时实现吉林省春玉米的大面积高产和水肥增效。By analysis of limiting factors on increase of maize production and efficient of water and ler- tilizer usage in three main maize production areas, main limiting factors for each area were made clear and their contribution ratio was clarified. The results showed that main limiting factors were seasonal drought, soil deteriorate and lag behind of integrated technology, their proportions were 19.0%, 16.3% and 23.2%. Ac- cording to these limiting factors, by improving cultural measures, directed fertilization of high yield land and optimization and integration of cultural techniques, increase of maize production and efficient of water and fertilizer usage can be realized.

关 键 词：玉米 产量 效率 限制因子 

分 类 号：S513[农业科学—作物学]