氮素营养对猕猴桃营养功能特征及果实产量的影响  

Effects of Nitrogenous Nutrition on Nutritional Functional Traits and Fruit Yield of Actinidia lindl

作　　者：魏斌[1,2] 李友明 翟广生 黄伟军[3] 李娜[4] 权小容 

机构地区：[1]兰州大学草地农业生态系统国家重点实验室,甘肃兰州730000 [2]广元市昭化区农业局,四川广元628000 [3]四川农业大学资源与环境学院,四川成都610000 [4]四川大学生命科学学院,四川成都610000

出　　处：《安徽农业科学》2015年第12期98-101,共4页Journal of Anhui Agricultural Sciences

基　　金：国家测土配方施肥资金项目;公益性行业(农业)科研专项经费项目(201203041)

摘　　要：[目的]为测土配方施肥技术的推广应用和区域猕猴桃产业发展提供科学依据。[方法]就不同施氮水平对猕猴桃营养功能特征及果实产量的影响进行田间试验研究。[结果]与无氮区相比,施氮处理对猕猴桃的春梢长度、相对生长率、比叶面积、叶干物质含量和果实产量有不同的影响。施氮梯度与猕猴桃树春梢的平均长度、比叶面积呈显著正相关关系,与叶干物质含量和茎叶比呈显著负相关关系,与果实产量则呈先增后减的的二次函数关系,而与相对生长率无显著相关性。各功能特征与猕猴桃果实产量间亦呈现不同的相互关系:果实产量分别与春梢长度、比叶面积呈显著正相关关系,与叶干物质含量呈显著负相关关系,与相对生长率和茎叶比间无显著相关性。[结论]适量施氮可促进猕猴桃茎、叶等营养器官发育,但过量施氮导致果树营养生长过盛,抑制其生殖生长,从而导致果实产量的下降。[ Objective ] The research aimed to provide the scientific basis for the popularization of formula fertilization by soil testing and the development of regional Actinidia lindl industry. [ Method] The effects of nitrogenous nutrition on nutritional functional traits of Actinidia lindl were investigated in the field condition. [ Result] Compared with non-N treatment, N application had different effects on the shoot length ,relative growth rate, specific leaf area, leaf dry matter content, steam leaf ratio and fruit yield. There were significant positive correlations between N gradient and shoot length, specific leaf area, and significant negative correlations between N gradient and leaf dry matter content, steam-leaf ratio. The fruit yield, however, increased with N level at first, then decreased as N application increasing, showed a unimodal curve. There was no significant correlation between N level and relative growth rate. Each biological trait and fruit yield showed different interrelations. Fruit yield positively correlated with shoot length and specific leaf area respectively, and negatively correlated with leaf dry matter content, while no relationship with relative growth rate and stem-leaf ratio. [ Conclusion] N could promote the development of stems and leaves of Actinidia lindl when applied properly, otherwise, excessive growth of vegetatiye organs would suppress the reproductive growth, resulted in the decline of fruits.

关 键 词：氮素营养 猕猴桃 营养功能特征 果实产量 

分 类 号：S663.4[农业科学—果树学]