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1玉米生产现状及存在问题据2008~2012年统计,辽宁省宽旬县玉米平均年种植面积2.77万hm2,平均产量7 385kg/hm2,年度间面积产量差异较大,存在主要问题是在品种应用上由少到多、到杂,主栽品种越来越不突出,在玉米种植上投入少、管理水平低、新技术应用不普遍等问题,使我县玉米单产始终徘徊不前。1.1限制玉米产量因素玉米品种杂乱、良种良法不配套。品种不规范、杂乱。近十年,我县玉米品种应用多而杂,无主栽品种。应用的玉米品种由1999年的5~6个品种增加到2012年的60个
1 Maize production status and existing problems According to the statistics from 2008 to 2012, the average annual acreage of corn in Kuanxun County of Liaoning Province is 27,700 hm2, with an average yield of 7,385 kg / hm2. There is a large difference in annual yield of maize. The main problems are: From less to more, to miscellaneous, less and less prominent cultivars, less investment in corn cultivation, low management, the application of new technologies is not common and so on, so that my county corn yield has remained at a standstill. 1.1 Limitation of corn yield factors Maize varieties messy, good varieties not supporting. Variety is not standardized, messy. The past ten years, my county corn varieties and more complex, no main varieties. The number of maize varieties used increased from 5 to 6 in 1999 to 60 in 2012