文献类型：期刊文献

中文题名：我国玉米产量变化及增产因素分析

英文题名：Analysis on Change of Production and Factors Promoting Yield Increase of Corn in China

作者：李少昆[1,3];王崇桃[2]

第一作者：李少昆

机构：[1]中国农业科学院作物科学研究所,国家农作物基因资源与基因改良重大科学工程,北京100081;[2]北京联合大学商务学院,北京100081;[3]新疆兵团绿洲生态农业重点实验室,新疆石河子832003

第一机构：中国农业科学院作物科学研究所,国家农作物基因资源与基因改良重大科学工程,北京100081

年份：2008

卷号：16

期号：4

起止页码：26-30

中文期刊名：玉米科学

外文期刊名：Journal of Maize Sciences

收录：CSTPCD;;北大核心:【北大核心2004】；CSCD:【CSCD_E2011_2012】；

基金：农业科技入户示范工程、农业科技成果转化资金(05EFN216900359);国家科技支撑计划(2006BAD15B03)项目

语种：中文

中文关键词：玉米;产量;增产因素;对策

外文关键词：Corn; Yield; Factors promoting yield increase; Countermeasure

摘要：对1949～2006年玉米产量变化数据进行分析。结果表明,50多年来,我国玉米单产提高了4270.5kg/hm2,增幅为380.1%,年均增加101.85kg/hm2;总产由1175万t提高到14548.5万t,增加了12.4倍,其中单产增加的贡献占82.1%,种植面积扩大的贡献为17.9%,总产量的提高主要依赖于单产的增加。在总结分析不同年代玉米单产提高的主要因素、技术特征和增产机理的基础上,提出了今后玉米生产发展需要解决的问题与对策。
Data analysis of corn yield from 1949 to 2006 showed that over the past 50 years, corn yield in China had increased 4 270.5 kg/ha, increasing by 380.1% and average annual growth of 101.85 kg/ha per unit area. Total yield had grown 12.4 times from 11.75 million tons to 145.49 million tons, of which 82.1% was contributed by yield per-unit increase and 17.9% by area expansion. Total yield increase was mainly attributed to the increase of yield per-unit. The important factors affecting corn yield and technical characteristics and the mechanism of yield increas- ing from different eras were summarized from breeding and cultivation measures and policy, and some suggestions were discussed about the future development of corn production in China.