期刊论文

中文

中国农业科学

0578-1752

1991

24

5

30-36

本校为其他机构

在田间种植条件下,对夏大豆早熟7号及早熟14号的光合特性观察表明:叶片光合速率在全展后3-5天达最大值;叶片“午睡”现象明显。三出复叶中的中小叶的光合速率、比叶重及叶面积的性状指标高于左、右两片小叶,而左、右小叶之间差异不大。不同叶龄时期的叶片,其光呼吸、光饱和点及CO_2补偿点差异显著,光呼吸与光合速率呈正相关,CO_2补偿点与光合速率呈负相关。夏大豆绿色豆荚的光合速率很低,而子叶的光合速率却较高。

The photosynthetic characteristics of summer-sown soybean were studied systamically with two varieties (Early-maturing No. 7 and Early-maturing No. 14) under field conditions in 1986-1987. The results are as follows:The net photosynthetic rate (NPR) per unit leaf area came to the maximum in 3-5 days after the leaf wholly expanded. The middle-leaflet of trifoliolate showed higher NPR, specific leaf weight (SLW) and leaf area, and those had a little differences between left-and right-leaflets. The midday depression of leaf NPR was obvious. The photorespiration rate and CO_2 compensation concentr...