大麦不同光合器官对籽粒灌浆及产量的影响

Effects of Some Photosynthtic Organs on Milking and Grain Yield of Barley

大麦的不同光合器官对籽粒的灌浆及产量的影响作了初步探索。在大麦灌浆前期，籽粒物质积累主要来源于茎杆贮藏物质，在中期，倒2叶以上各光合器官对籽粒的物质积累起关键作用，在后期，倒2叶作用消失，而剑叶和芒仍对籽粒的灌浆发挥很大作用；大麦倒2叶以上的光合器官对籽粒产量的贡献卓越，其中剑叶的贡献最大．而芒的作用也很显著；大麦各光合器官在抽穗后对结实率的影响不大。

The prelimnary study was made on some photosynthtic organs to effect on milking and grain yield of barley. The results showed that the matter of barley grain largely came from the stack, in the early period. In the middle period. the last two leaves and awn play a key role on ac cumulation of grain matter. In the last period the leaf before the last one did not contribute to the grain of barley. The photosyntic organs of barley including the last two leaves and the awn devoted distinguished contributon to grain yield, but the last leaf was the best one. The photosynethtic organs of barley did not effect on the fertility rate obviously.