不同间伐方式对苹果光合指标的影响

目的]研究不同间伐方式对苹果叶片光合指标的影响。方法]以特拉蒙苹果为试材,研究3种不同间伐方式对苹果叶片光合指标的影响。结果]不同间伐处理对净光合速率、胞间CO_2浓度、羧化效率和水分利用效率的影响较大,间伐处理各光合指标的季节变化均优于对照。隔行间伐更能提高果园的通透性,其最高净光合速率达11.30μmol/(m~2·s),最高胞间CO_2浓度为127.46μmol/mol,最高羧化效率为0.087 mol/mol,最高水分利用效率为6.12μmol/mol。结论]该研究为进一步提高苹果栽培的优质丰产水平提供理论和实践依据。

Effects of Different Thinning Methods on Apple Leaf Photosynthetic Indexes

Objective] To study effects of different thinning methods on apple leaf photosynthetic indexes.Method] Using "Telamon" apple as material,effects of different thinning methods on apple leaf photosynthetic were studied.Result]The net photosynthetic rate,the CO2 concentration,the carboxylation efficiency and the water use efficiency of thinning methods were significantly higher than the control(CK).Interlaced thinning could improve the permeability of the orchard,the net photosynthetic rate was as high as 11.30 μmol/(m2·s),the CO2 concentration was 127.46 μmol/mol,the highest carboxylation efficiency was 0.087 mol/mol,and the highest water use efficiency was 6.12 μmol/mol.Conclusion] The results provide the theory and practice basis for improving high quality cultivation level of apple.