春大豆三个品种光合速率的初步研究

PRIMARY STUDY ON PHOTOSYNTHETIC RATE OF THREE VARIETIES OF SPRING SOYBEAN

在大田条件下 ,研究了春大豆三个品种的光合速率。结果表明 ,不同大豆品种的叶片光合速率随生育时期、叶位及光照强度的不同而变化 ,并呈现一定的规律。大豆主要生育时期的平均光合速率与产量呈显著正相关 ,相关系数为 0 .96 16。

Field experiment was conducted to study on photosynthetoc rate of three varieties of spring soybean. The result showed that the photosynthetic rate of leaves in different varieties of spring soybean gave differences in growing stages, leaf position and light intensity. The average rate of photosynthesis in principal growing stage of the soybean was correlated positively with the yield. The correlation coeficient was about r=0.9616. So the values of average photosynthetic rate was one important indexes of evaluation the yield of spring soybean.