摘要
通过5年10项次的系列试验,研究了影响大豆产量的栽培因子的单因素、多因素对大豆器官生长发育和群体产量的影响,分析了栽培因子的实施效应。播期、密度、行株距配置试验研究结果表明:一般夏大豆品种较早播种,生长稳健,分枝、有效荚数和单株粒重增加,有利于高产;不同株型类型品种的适宜密度有显著差异,主茎型>分枝紧凑型>分枝松散型,在适宜密度条件下均可达到较高产量水平;缩小行距,有利于增加群体数量,叶面积指数增加;适当增加株距,有利于改善单株生育状况和后期透光条件,提高单株生产力。因此,夏大豆产区实现田间最佳分布措施是缩小行距,扩大株距。
In order to understand the effect of single and multiple cultivative factors on growth, development and gross yield of soybean, a series of experiment were carried out for 5 years. The results of trials on density, sowing date, spacing in row and plant space showed that the summer sowing soybean with earlier sowing date treatment grew strongly, had more branches and more pods, and high yield. The suitable density for optimum yield were significantly connected with variety types, that was stem type >tight branch type >loose branch type. Reducing space in row could increase mass quantity and leaf area index (LAI). Increasing plant space could improve growth and development for single plant and light conditions for late growing stage, which led to the increase of yield per plant. Therefore, the optimm distributing form for summer sowing soybean was to reduce space in row and enlarge plant space.
出处
《中国油料作物学报》
CAS
CSCD
北大核心
2002年第4期29-32,共4页
Chinese Journal of Oil Crop Sciences
基金
国家863项目(2001AA2411062)
