品种对双季玉米早春季和晚夏季的适应性研究  

Adaptability of Varieties to Double-cropping in Early Spring and Late Summer

作　　者：李立娟[1,3] 王美云[2] 赵明[1] 

机构地区：[1]中国农业科学院作物科学研究所,农业部作物生理生态与栽培重点开放实验室,北京100081 [2]中国农业大学农学与生物技术学院,北京100193 [3]河北农业大学农学院,河北保定071001

出　　处：《作物学报》2011年第9期1660-1665,共6页Acta Agronomica Sinica

基　　金：国家“十二五”科技支撑计划项目(2011BAD0000);国家重点基础研究发展计划(973计划)项目(2009CB118605)资助

摘　　要：双季玉米是近年来一种新型种植模式,为探索品种对季节的适应性及筛选适合双季玉米种植的品种,2008—2010年分别在山东莱州、河南焦作和新乡进行了研究。结果表明,不同地区不同年份早春季与晚夏季的生长条件不同,对品种各生育的影响不相同;大多数品种早春季产量高于晚夏季产量;两季产量主要为中等水平(5737～8639kghm-2),占供试品种的33.2%;在品种选择中,穗粒数与品种选择无关,而生育期是重要指标;早春季选用品种益农103具有高产稳产的特点,晚夏季选用品种郑单958可以确保第二季达到稳产。同时,以同一品种对早春和晚夏的适应性来考察品种对环境的适应性,也更能体现品种综合性能的优良程度。Double-cropping is a new maize planting model in recent years.To explored the adaptability of varieties to the season and screen varieties suitable for double-cropping,we conducted trials in Laizhou,Shandong province,Jiaozuo and Xinxiang,Henan province in 2008-2010.The results showed that the accumulated temperature in early spring and late summer in different areas and years had the different impacts on each growth processes of species.The most varieties grown in early spring had higher yield than those in late summer,and most of the varieties seeded in the two seasons had the medium level of output（5 737-8 639 kg ha^-1）.In variety selection,growing period was an important index,but grain number per spike was not.Yinong 103 had high and stable yields in the early spring,and Zhengdan 958 could ensure stable production at the second growing season in the late summer.Meanwhile,the adaptability of one variety to the environment in early spring and late summer also can reflect the comprehensive performance of the variety in agronomy.

关 键 词：双季玉米 品种 季节反应 适应性 

分 类 号：S513[农业科学—作物学]