苹果叶片营养分析适宜采样时期研究  

Research on the Reasonable Sampling Stage for Apple Leaf Nutrient Analysis

作　　者：杜社妮[1,2] 李曼[3] 李明霞 白岗栓[1,2] 

机构地区：[1]西北农林科技大学水土保持研究所,陕西杨凌712100 [2]中国科学院水利部水土保持研究所,陕西杨凌712100 [3]中国海洋大学生物工程开发有限公司,山东青岛266071 [4]府谷县人民政府,陕西府谷719400

出　　处：《北方园艺》2011年第21期1-4,共4页Northern Horticulture

基　　金：中国科学院水利部水土保持研究所领域前沿资助项目(C127);国家"十二五"科技支撑计划资助项目(2011BAD31B05)

摘　　要：在渭北高原以盛果期"红富士"苹果树为采样对象,在幼果速长期、春梢停长期、花芽分化期、果实采前膨大期、果实采收期定位采集叶片,分析叶片中的氮、磷、钾、钙含量,以确定合理的叶分析采样时期。结果表明:从幼果速长期到果实采收期,叶片中氮、磷含量持续降低,钾为"反抛物线",钙为持续升高。通过对不同生长期叶片营养元素含量分析,认为花芽分化期为测定叶片氮、磷、钙的适宜采样时期,钾应在果实采收期或春梢停长期采样分析较为合理。In order to determine a reasonable sampling stage for leaf nutrient analysis,Red Fuji apple trees in full productive stage had been as the sampling objects in Weibei Plateau of Shaanxi Province,and its leaves had been positioning collected in the growth stage of young fruit rapid growth stage,spring shoot ungrowth stage,flower bud differentiation stage,fruit expanding stage before harvest,harvest stage,and leaves nitrogen,phosphorus,potassium,calcium content had been analyzed respectively.The results showed that leaves nitrogen,phosphorus content decreased continuously,potassium content changed in ＇anti-parabola＇,calcium content increased continuously from young fruit rapid growth stage to harvest stage.Through analyzed leaves nutrient contents at different growth stage,flower bud differentiation stage been received as a reasonable sampling stage for leaf nitrogen,phosphorus,calcium analysis,spring shoot ungrowth stage and harvest stage been received as reasonable sampling stage for calcium analysis.

关 键 词：苹果树 营养含量 采样时期 叶片分析 

分 类 号：S661.1[农业科学—果树学]