龙眼是我省主要的亚热带拳头水果产品,目前无论鲜食或加工都供不应求。但在花果期往往受低温阴雨、夏季强风骤雨、肥水不足、蝽蟓虫害等影响,着果率低,造成大年欠收,小年失收。为增强龙眼树体的抗性,减少生理落果,提高着果率,提高产量 Longan is the main subtropical fist fruit products in our province, at present, regardless of fresh or processed are in short supply. However, in the fruit-and-fruit stage, it is often affected by low temperature and rainy weather, heavy summer showers, inadequate water and fertilizer, stink bug and pest insects, etc., resulting in low rates of fruit harvest and shortfall in the New Year. In order to enhance the resistance of longan trees, reduce physiological drop fruit, improve the fruit rate and increase the yield