我国柑桔广大产区,普遍存在着大小年结果现象。主要原因之一是抽发大量夏梢,过多地消耗树体营养,引起严重落果。其次,近年来推广的柑桔密植矮化栽培,由于没有理想的矮化砧■组合,大部分幼树在五年左右就严重郁闭,影响了产量和品质,树势也随之衰弱。为了解决这些问题,目前主要采取人工抹梢方法。但人工抹梢花工多,增加劳动强度和提高成本。因此,研究应用植物生长调节剂来控制新梢抽生、提高着果 The majority of citrus producing areas in our country, there are widespread phenomenon of size year results. One of the main reasons is that a large amount of summer shoots are drawn and the tree nutrition is consumed excessively, causing serious dropouts. Second, in recent years, citrus planting and dwarfing cultivation has been promoted. Because there is no ideal combination of dwarfing plants, most of the saplings are severely weathered in about five years, affecting the yield and quality of the trees. In order to solve these problems, the current main method to use manual wiping. However, artificial hand-brushing more workers to increase labor intensity and increase costs. Therefore, the application of plant growth regulators to control the shoots to shoot, improve the fruit