摘要
对不同结荚习性大豆品种的株型特征、生长动态、光合能力等进行了比较研究,探讨其产量形成的机制。试验结果表明,有限结荚习性品种与亚有限结荚习性品种株型间有明显的差异,亚有限结荚习性品种株高、节数和茎粗的最大生长速率较大,出现时间较晚,能促进干物质的后期积累;有限结荚习性品种铁丰29号和沈农6号的叶柄角度较大,分枝角度较小,利于光在作物群体内的分布,冠层光合速率较高,能加速光合产物的形成。在人工光源条件下,有限结荚习性品种的光合速率高于亚有限结荚习性品种,但两者均可获得较高的产量,说明决定大豆产量形成的因素十分复杂。
Mechanism of yield formation was studied by comparing plant type, growth dynamic, photosynthetic capability in different podding habit soybeans. The results suggested that there were remarkable difference between plant type of determinate and semideterminate podding habit soybean, V(max) of plant height, node number, stem thickness of semideterminate podding habit soybean were higher than those of determinate podding habit soybean, which improved dry matter accumulation of semideterminate podding habit soybean. Petiole angle and branch angle of determinate podding habit soybean Tiefeng 29 and Shennong 6 were better than those of semideterminate podding habit soybean Liaodou14 and Liaodou11, which were benefit to light distribution of crop population structure, photosynthetic rate of canopy was high, which accelerated photosynthetic matter formation. Photosynthetic rate of determinate podding habit soybean was higher than that of semideterminate podding habit soybean, but high yield could be obtained in both podding habit soybeans. Therefore, there were many factors affecting formation of soybean yield.
出处
《中国油料作物学报》
CAS
CSCD
北大核心
2004年第2期61-64,共4页
Chinese Journal of Oil Crop Sciences
关键词
大豆
结荚习性
株型
光合速率
产量
Soybean
Podding habit
Plant type
Photosynthetic rate
Yield
