摘要
华北地区是我国夏玉米主产区,但该地区地下水超采严重,玉米生育期内经常干旱缺水,雨养玉米已经成为节水农业发展的趋势。筛选简单易行的抗旱指标,对抗旱节水高产玉米品种的评价和选育有重要意义。在雨养水分亏缺条件下,对华北地区广泛种植的10个玉米品种穗位叶性状与产量关系进行相关研究,结果表明,在10个参试品种中浚单20的叶面积中等、叶鲜重和叶干重较重,物质的转运能力较高,其产量最高,具有抗旱节水高产特性。穗位叶各性状间呈极显著正相关,其中叶面积对叶干重的影响较大,穗位叶干重与产量呈显著正相关并具有共线性关系。因此,建议将穗位叶干重作为雨养条件下品种鉴定及选育的指标进行应用。
Northern China is one of the main grain product areas in our nation, where the underground water is seriously over exploited and corn often suffered drought. Therefore cultivating corn by rainfed will become a trend in the future in water-saving agriculture. So it is very important to select simple indicator to estimate and screen the new corn varieties. This article sets a research on the relationship between ear leaf traits and production by studying 10 corn hybrids which are widely planted in Northern China Plain in the rain-fed and water-deficit condition. The results showed that Xundan 20 has a moderate ear-leaf area, heavier fresh and dry weight of ear leaf, and a higher dry matter translocation. With a stronger drought-resistance, water-saving and high-production trait, it has the highest production. The traits of ear leaf have an extremely has a great influence on dry weight of ear leaf. Dry tionship with production, which can be suggested significant positive correlation with each other, and ear-leaf area weight of ear leaf has a positive correlation and direct linear rela- to be used as a drought resistance index for drought-resistance evaluation and cultivation of maize under rain-fed condition.
出处
《作物杂志》
CAS
CSCD
北大核心
2013年第3期25-28,共4页
Crops
基金
973项目(2010CB951501)
河北省科技支撑计划(13226402D)
关键词
玉米
雨养
穗位叶
产量
Maize
Rainfed
Ear leaf
Yield
