吉林省不同生态区域玉米产量及构成因素的差异性  

Difference of Maize Yield and Component Factor of Different Ecology Zones in Jilin Province

作　　者：宝音巴特 王婧瑜[2] 朱景嵩 朴春红 谷岩[1] 

机构地区：[1]吉林农业大学农学院,长春130018 [2]吉林省农科院,长春130033 [3]梨树镇农业技术推广站,梨树136500 [4]吉林省农业综合信息服务股份有限公司,长春130000

出　　处：《分子植物育种》2017年第9期3819-3824,共6页Molecular Plant Breeding

基　　金：国家重点研发计划-春玉米改土抗逆丰产增效关键技术模式构建(2017YFD0300607);吉林省教育厅吉林省科技厅优秀青年人才基金项目(20170520092JH);吉林省科技厅重大项目(20140203010NY)共同资助

摘　　要：在长春、松原2个地区研究玉米产量及构成的影响因素分析。结果表明:(1)随着密度增加千粒重和穗粒数明显下降,产量先增加后降低;两个地区均以7.5×104株/hm2的产量最高。在相同密度下长春地区玉米产量及千粒重高于松原地区。(2)生态因素对玉米千粒重影响显著,热量不足是限制吉林地区玉米产量的重要因子。(3)在日照充足、积温相对较低的松原地区,种植密度可适当高于长春地区。The density experiments were conducted separately in two different ecology zones of Changchun and Songyuan to study the influence of density and ecological factors on maize yield. The results were as followed：（1）with the drop significantly of density, the thousand seed weight and ear kernel, the yield raised firstly and then decreased; both of two zones reached highest yield at the density of 7.5 ×104plant/hm2. At the same density, the maize yield and the thousand seed weight of Changchun area was higher than Songyuan area.（2） Ecological factors had more impact on yield and thousand seed weight, thousand seed weight and accumulated temperature had positive correlation, which indicated heat shortage was the main factor limited the maize yield of Jilin area.（3） In Songyuan area where had abundant sunshine and low temperature, the planting density could suitably higher than Changchun area.

关 键 词：玉米产量 生态因素 密度 

分 类 号：S513[农业科学—作物学]