【摘要】 在干旱石灰岩山区条件下 ,研究果园生草对新红星苹果树光合特性的影响 ,结果表明 :生草、清耕条件下植株叶片光合效率的变化趋势相似 ,生草显著提高了苹果叶片对CO2 的日同化量和年同化量 ,说明鸭茅草、无芒雀麦、红三叶草是适合干旱石灰岩山区果园栽植的优质草种更多还原

【Abstract】 On arid calcareous stone area orchard,pasture-planting may increase the diural and annual amounts of CO\-2 assimilated of apple leaves significantly.This can be profitable to the high producing and high quality of fruit trees.This indicates Dactylis,Bromus and Trifolium are suitable pasture species for the arid calcareous stone area orchard.更多还原