摘要
为进一步明晰东北华北春播区和黄淮海夏播区玉米生产的特征,从区试对照品种农大108和郑单958入手,对两个区域玉米产量及主要农艺性状进行比较和阐述。结果表明,东华北春玉米平均比黄淮海夏玉米增产1.4～2.0t/hm2,并且其产量优势在生育期、株高和穗位高、产量构成等方面都有着较好的体现。与黄淮海夏玉米相比,东华北春玉米生育期延长30天左右;株高和穗位高分别增加0.15～0.23m和0.09～0.15m;穗粒数和千粒重平均增加19.9%～25.4%和9.7%～16.5%。黄淮海区夏玉米粒重和穗粒数都有更大可提升的空间,而东华北春玉米增产主要靠增加穗粒数。
In order to further understand maize production characters in the Northern east - Northern China spring maize region and the Huang-huai-hai summer maize region. The two regions were compared on grain yield and some main agronomic characters of two cuhivars （Nongda108 and Zhengdan958） based on National Maize Cuhivar Regional Trial. Grain yield of spring maize in Northern east - Northern China was 1.4-2.0 t/ hm^2 higher than that of summer maize in Huang-huai-hai region. And this advantage could be displayed on growing period, plant height and ear height, and yield components as well. Comparing to summer maize, spring maize had ±30 d longer growing period, 0.15-0.23 m higher plant height, 0.09-0.15 m higher ear height, 19.9%-25.4% more kernel number per ear, and 9.7%-16.5% higher thousand kernel weight. Yield increase of summer maize in Huang-huai-hai region could be promoted by increasing either kernel weight or kernel number per ear, while that of spring maize in Northern east - Northern China mainly depends on increasing kernel number per ear relatively.
出处
《中国农学通报》
CSCD
北大核心
2010年第11期127-131,共5页
Chinese Agricultural Science Bulletin
关键词
区域试验
农艺性状
株高
春玉米
夏玉米
Regional Trial
agronomic character
plant height
spring maize
summer maize
