巨峰葡萄是我国目前栽培面积最大的大粒鲜食品种，具有树势旺盛、穗大粒大、品质好、抗病力强等优良特性，但也存在落花落果严重的缺点。因而，如何通过栽培管理防止落花落果、提高座果率是巨峰葡萄生产的关键。一、落花落果的原因1．氮肥施用过多，修剪过重等引起新梢徒长，使 Jufeng grape is the largest cultivated area of ​​fresh food varieties in China, with strong vigor, spike large grain, good quality, strong resistance to disease and other excellent features, but there are also the serious drawback of falling flowers. Therefore, how to prevent fruit drop through fruit cultivation and improve fruit set rate is the key to Kyoho grape production. First, the reasons for falling plums 1. Nitrogen fertilizer too much, too much pruning, etc. caused by new shoots so long