修枝对杨粮间作系统中光照及作物产量和生物量的影响

EFFECT OF PRUNING ON LIGHT DENSITY, YIELD AND BIOMASS OF CROPS IN POPLAR-CROP INTERCROPPING SYSTEM

实验选取株行距 1m× 10m的毛白杨和花生间作田 ,研究修枝对间作田不同水平位置的光照及花生产量和生物量的影响。结果表明 :随修枝强度的增大 ,不同处理间作田相应位置的光照强度增强 ,花生的产量和生物量也随之增加。修一层枝和修两层枝的间作田 ,东林冠下测点日均光照强度分别比不修枝的提高 2 6 0 %和 5 5 1% ;西林冠下提高 19 0 %和 38 4 % ;行中提高 2 0 7%和 38 6 %。修一层枝、修两层枝的间作田花生产量分别比不修枝的提高17 1%和 4 7 6 % ,花生果生物量提高 17 6 %和 4 7 8% ,秸秆提高 12 0 %和 31 5 %。

In order to study the effect of pruning on light density,yield and biomass of peanut in poplar-crop intercropping system,experiments were done in poplar-peanut intercropping field. Results showed that the stronger the pruning the bigger light density and yield and biomass of peanut were. With the poplar pruning one layer and two layer the average day light density on the observation under poplar were 26 0%,55 0% higher than that of no pruning; West observation increased by 19 0%, 38 0% Middle observation increases by 20 7%,38 0%,the peanut yield were 17 1%,47 6% and peanut biomass were 9 31% higher than that of no pruning respectively.