【作者】 钟诚； 曹蕾； 贺婷； 涂淑萍；

【Author】 ZHONG Cheng;CAO Lei;HE Ting;TU Shu-ping;College of Landscape and Art,Jiangxi Agricultural University;Xinjian County Landscaping Administration Office;

【机构】 江西农业大学园林与艺术学院； 江西省新建县园林绿化管理所；

【摘要】 采用正交试验设计研究氮磷钾配比施肥对2年生盆栽圆齿野鸦椿光合特性的影响。结果表明,净光合速率与气孔导度呈较强的正相关性（r=0.84）,与胞间二氧化碳浓度呈中度的负相关性（r=0.74）,说明气孔导度不是影响圆齿野鸦椿净光合速率的主要因素。对圆齿野鸦椿净光合速率影响的N、P、K主次顺序为N>K>P,最优组合为N₂P₂K₂,即每盆每次施N 0.92g+P₂O₅ 0.12g+K₂O 0.60g时,圆齿野鸦椿净光合速率最高,最佳施肥配比为N:P₂O₅:K₂O=8:1:5。更多还原

【Abstract】 By orthogonal experimental study on the nitrogen,phosphorus and potassium fertilizer on biennial plants Euscaphis konishii photosynthetic characteristics.The results show that the net photosynthetic rate and stomatal conductance were strong positive correlation（r = 0.84）,and the intercellular CO₂ concentration is moderate negative correlation（r = 0.74）.The stomatal conductance is not the main factors influencing the net photosynthetic rate.N,P,K of Euscaphis konishii affect net photosynthetic rate of primary and secondary order for N > K > P,the optimal combination for N₂ P₂ K₂ fertilization,namely every pot every time N 0.92 g + P₂O₅0.12 g + K₂O 0.60 g.The best NPK ratio:N:P₂O₅:K₂O = 8:1:5.更多还原