设施栽培桃树落花落果的主要原因是品种选择不当,需冷量不足,温湿度条件不适,授粉不良和营养失调的结果。对策是选适栽品种,适时升温,合理调控设施环境,及时授粉,疏花疏果,合理修剪,加强肥水管理,喷生长调节剂等。 The main reasons for the cultivation of peach trees fall and fall fruits are the result of improper selection of varieties, lack of cooling capacity, uncomfortable temperature and humidity conditions, poor pollination and malnutrition. The countermeasure is to choose suitable varieties for planting, timely warming, reasonable control of facilities and environment, timely pollination, thinning and thinning, pruning rationally, strengthening fertilizer and water management, spraying growth regulators and so on.