摘要
在本试验生产条件下和施氮量范围内,具有4500kg·hm-2以上产量潜力品种黑农41随着始花期施氮量的增加,氮肥对大豆根瘤形成的抑制作用加大,推迟单株伤流液出现的高峰期,增加全生育期的叶面积指数和干物质积累,增加各产量构成因素和产量。始花期一次施纯氮90kg·hm-2春大豆籽粒产量可达5012.55kg·hm-2。
Within the range of nitrogen used quantity and the condition of this study, the control of nitrogen on the form of nodule of Heinong 41 which has the yield potential of more than 4 500 kg·hm^(-2) increased along with the increasing of quantity of nitrogen used. Nitrogen fertilizer can put off the appearance of fastigium of bleeding, increased the LAI and the accumulation of dry matter of whole growing-stage. Nitrogen fertilizer increased the structure factor of yield and the yield, too. In the condition of 90 kg·hm^(-2) nitrogen used at flowering-stage, the yield of the spring soybean reached 5 012.55 kg·hm^(-2).
出处
《新疆农业大学学报》
CAS
2004年第2期36-39,共4页
Journal of Xinjiang Agricultural University
基金
国家"十五"攻关资助项目(2001EP050007)
新疆维吾尔自治区科技兴农办资助项目
关键词
春大豆
氮肥
根系
干物质
产量
spring soybean
nitrogen
root system
dry matter
yield
