【作者】 薛新平； 陈敏克； 申仲妹；

【Author】 Xue Xinping, Chen Minke, and Shen Zhongmei (Institute of Pomology and Institute of Horticulture, Shanxi Academy of Agricultural Science, Taigu 030800)

【机构】 山西省农科院果树研究所；

【摘要】 单叶面积小于25cm2,P／Zn大于100,叶片中Zn含量小于27μg／g为苹果小叶病的诊断参比值。小叶病叶片细胞结构紊乱,细胞体积增大,叶绿体发育不全。分析zn值营养在树体内年消长规律,提出在萌芽前进行矫治,可有效预防Zn营养缺乏症。更多还原

【Abstract】 Diagnostic Ratio of little leaf disease for apple is single leaf area lower than 25cm2, P/Zn over 100 and Zn content lower than 27 μg/g. The little leaf disease showed disorder in cell structure of leaf, bigger in cell volume, not enough chlorohpyll. Analysis of yearly Zn content changes suggest the right time to prevent the lack of Zn nutrition be before budding.更多还原