巨峰葡萄是目前全国各地的葡萄主栽品种,占比高达60%~70%。巨峰葡萄最大的缺点就是落花落果严重。经过多年的田间调查,结合种植户施肥、喷药、田间管理及气候因素综合分析,对巨峰葡萄落花落果的原因进行归纳总结,并提出预防措施,供果农参考。生理落果:通常是指花前一周的花蕾和开花后的子房大量脱落,花穗上的花蕾虽然很多,但能受精座果的仅有20%~40%,其余花朵均不能受精而脱落。这是植物本身的一种自疏现象,属 Kyoho grapes are currently grape varieties throughout the country, accounting for up to 60% to 70%. Kyoho grapes biggest drawback is the drop of fruit serious. After many years of field investigation, combined with a comprehensive analysis of the fertilization, spraying, field management and climatic factors, the author summarized the reasons for falling fruit of Kyoho grape and proposed preventive measures for reference of farmers. Physiological decaffeination: usually refers to a week before flowering and flowering ovary after a large number of flower buds, flower buds though many, but can fertilize the fruit only 20% to 40%, the rest of the flowers can not be fertilized and fall off. This is a phenomenon of self-sparse plants, genus