在大棚黄瓜栽培过程中,若管理不当或遇到不良环境因素的影响,就会出现化瓜现象,严重时高达50％,直接影响黄瓜的产量和大棚效益。为进一步帮助广大菜农掌握防止化瓜技术,现将大棚黄瓜化瓜的几种主要成因及防止化瓜对策分别介绍如下: 1、高温引起化瓜。当大棚内白天温度高于32℃,夜间高于18℃时,光合作用就会受阻,呼吸消耗骤增,造成营养不良而化瓜。同时,高温还可导致雌花不能正 Cucumber cultivation in the greenhouse process, if not properly managed or encountered adverse environmental factors, there will be melon phenomenon, severe up to 50%, a direct impact on cucumber yield and greenhouse benefits. To further help the majority of vegetable farmers to prevent melon technology, now the greenhouse cucumber melon several main causes and measures to prevent melon were introduced as follows: 1, caused by melon high temperature. When the temperature in the greenhouse during the day is higher than 32 ℃, at night above 18 ℃, photosynthesis will be blocked, respiratory consumption surge, resulting in malnutrition and melon. At the same time, high temperatures can also lead to female flowers can not be positive