根施氮磷钾肥对轮台白杏光能转换效率的影响  

Effect of Root Fertilization by Nitrogen,Phosphoric and Potassium on Foliar Light Energy Conversion Efficiency of Armeniaca vulgaris 'Limtaibaixing'

作　　者：郭志超[1] 潘存德[1] 

机构地区：[1]新疆农业大学林学与园艺学院,乌鲁木齐830052

出　　处：《新疆农业科学》2013年第1期106-111,共6页Xinjiang Agricultural Sciences

基　　金："十一五"国家科技支撑计划课题(2007BAD36B03)

摘　　要：[目的]检验根施氮、磷、钾肥对轮台白杏叶片光能转换效率(Fv/Fm)的影响,为轮台白杏的田间施肥管理提供科学依据。[方法]采用"3414"肥料效应田间试验和逐步回归分析。[结果]轮台白杏光能转换效率(Fv/Fm)的常用对数与氮肥施用量呈显著线性正相关,与磷肥施用量不相关;当钾肥(K_2O)施用量超过0.2587 kg/株时,对轮台白杏的光能转换效率存在负效应。[结论]在高温、高光照、低空气湿度绿洲灌溉条件下,根施氮肥和一定量的钾肥,有利于缓解由气孔因素引起的轮台白杏叶片光能转换效率的下降。[ Objective ] In order to provide management Of Armeniaca vulgaris ＇ Luntaibaixing＇ efficiency （Fv/Fm） of A. vulgaris ＇ Luntaibaixing scientific basis which was used in field fertilization , the effect of fertilizer on foliar light energy conversion ＇, which was compounded by nitrogen, phosphoric and potassium, was tested. [ Method]＇ 3414＇ fertilizer effect field experiment and stepwise regression analysis were used. [ Result] The common logarithm of the light energy conversion efficiency （Fv/Fm） of A. vulgaris ＇ Luntaibaixing＇ had significant linear positive correlation with the nitrogenous fertilizer, but not with the effect of phosphate fertilizer; the potassium had the negative effect on the light energy conversion efficiency when potash fertilizer （K20） seemed more than 0.258 7 kg on per tree. [ Conclusion] Under the oasis irrigation conditions of high air temperature, high illumination intensity, low air humidity, root fertilization by the nitrogenous fertilizer and a certain amount of potash fertilizer was able to alleviate decline of the light energy conversion efficiency of A. vulgaris＇ Luntaibaixing＇ which was caused by stomatal factors.

关 键 词：轮台白杏 施肥 光能转换效率 

分 类 号：S662.2[农业科学—果树学] S606[农业科学—园艺学]