红富士葡萄喷施叶肥反应的研究

A Study on Reaction of Spray Foliage Fertilizer of Red FUJI Grape

叶分析营养诊断目前已在国内外广泛应用,成为判断果树营养状况、指导科学施肥的重要手段。本试验目的在于改善红富士葡萄的着色情况,提高果实含糖量及其商品价值。试验所用叶肥分别为:(1)铈—钾—镁—锌叶肥。(2)钾—磷—镁—锰叶肥。(3)磷—硼—钼叶肥。(4)对照。分四次将叶肥喷施于叶面。由观察、计算的结果表明:红富士葡萄对叶肥有反应,从叶柄分析的结果看,某些元素的水平有明显提高。通过对未喷施叶肥植株的叶分析营养诊断,提出以下结论:天津地区植株氮、钾、钙、锰元素含量水平极低,急需通过合理施肥及喷施叶肥来进行调整。

Nutrition diagnosis in foliage analysis is a important way for Determination nutrient condition and for guiding fertilizer application of fruit tree.It has been widly used now- adays.The purposes of this experiment are to improve the tinction of FUJI grape,to raise the sugar content and commodity Value.The fertilizer used in this experiment are as follows:①Ce —K—Mg—Zn,②K—P—Mg—Mn,③PB—Mo,④control.The fertilizer is sprayed on foli- age in four times.The results of leaf stalk analysis show that the level of some elements have been raised obviously.Nutrition diagnosis in foliage analysis of plants which have not been spraded fertilizer has also been made.It shows that content of N.K.Ca.Mn in plants are very low in Tianjin area.There is a great need for adjusting those elements by means of application fertilizer and foliage spray.