林业科技开发2013，Vol.27Issue(2)：22-25,4.DOI:10.3969/j.issn.1000-8101.2013.02.006
苹果不同树形的树体结构及光能利用率
A study on tree crown structure and light utilization efficiency of apple trees
摘要
Abstract
Spindle shape, administered shape and improved spindle shape of three red Fuji apple trees were used as materials which were in Gangdi village, Neiqiu county, Hebei Province. The influence of apple trees with different shapes on tree structure and light use efficiency was studied. The results showed that; Among three different tree shapes, the branches of improved spindle shape tree was the most and the crown breadth was the largest, the total number of branches was 1 376 000 /hm2. While the branch number of administered shape and spindle shape tree were only 724 000 /hm2 and 546 000 /hm2 respectively. The percentage of epicormic shoot in spindle shape tree was relatively high (13. 81% ) , the percentage of short shoot in improved spindle shape tree was the highest (77. 32% ). The light transmittance of spindle shape and administered shape tree was 0. 265 and 0. 225 respectively, significantly higher than that of improved spindle shape tree. The total radiation of canopy, scattering radiation and the direct radiation of spindle shape tree was all the highest, they were 1 579.42, 276. 67 and 1 310. 83 MJ/(m2 ·a) respectively, significantly higher than that of administered shape and improved spindle shape tree. The light intensity of administered shape tree was obviously higher than that of improved spindle shape tree, the light intensity of spindle shape tree was higher than that of improved spindle shape tree, but there were no obvious differences. The net photosynthetic rate of administered shape tree was the highest, that of spindle shape tree was the second, and that of improved spindle shape was the least.关键词
苹果/树形/光能利用率Key words
apple/ tree shape/ net photosynthetic rate引用本文复制引用
魏常燕,宋杰强,李保国,齐国辉,张雪梅..苹果不同树形的树体结构及光能利用率[J].林业科技开发,2013,27(2):22-25,4.基金项目
国家林业公益性行业科研专项(编号:201004093) （编号:201004093）
河北省科技支撑项目(编号:11230605D). （编号:11230605D）
