3种不同柑桔中间砧在树体矿质营养含量上的双重效应

以纽荷尔脐橙/3种不同中间砧/枳为试材进行田间试验研究不同中间砧对接穗叶片矿质营养含量的影响。结果表明，3种中间砧对接穗叶片N、P、Ca、Fe和Zn含量年变化趋势的基本特征无明显影响；而对叶片K、Mg和Mn含量的年变化趋势特征在一定变化阶段上有明显影响。在年周期的不同时期里，叶片K和Mn含量在3种不同中间砧之间存在显著或极显著差异；而其余矿质营养含量在3种不同中间砧之间只在部分时期里存在显著或极显著差异；而在各矿质营养含量存在显著或极显著差异的不同时期间，该矿质营养含量在3种不同中间砧之间的相对高低差异趋势不全相同。

Double Effects of 3 kinds of Interstock on the Contents of Mineral Nutrient of Tree --Ⅰ Effects of Different Kinds of Interstock on the Annual Changes in the Contents of Mineral Nutrient in Leaf of Newhall Navel Orange (Citrus.Sinensis Osbeck)

Study on the effects of different kinds of interstock on the annual changes in the contents of 8 kinds of mineral nutrient in leaf by doing field experiment with the materials “Newhall navel orange/3 kinds of interstock/trifoliate”. The results indicted the following. 3 kinds of interstock had no obvious effects on the tendencies of the annual changes in the contents of all kinds of mineral nutrient but K and Mg and Mn in leaf, and had noted effects on some phages of annual changes in the contents of K and Mg and Mn in leaf. The contents of K and Mn in leaf among 3 kinds of interstock had remarkable difference during every period of the annum. The contents of the other kinds of mineral nutrient among 3 kinds of interstock had remarkable difference during some periods of the annum. Meanwhile, among the periods when the contents of each mineral nutrient had significant difference, the tendency of the relative difference of the kind of mineral nutrient in one period didn’t always have the same turn as the others.