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进入深冬时节后蔬菜生长在保护地中,但外界剧烈的气候变化对蔬菜仍然起决定性作用。保护地蔬菜生长环境特殊,普遍是连茬种植,肥大水大,通风一般较差。因此适宜高湿的病虫发生较严重,而控制起来难度偏大。一、蔬菜生理性病害的预防。此时温度变化较大,或有大风天气。如果出现大雾或阴天,当超过7天时间,蔬菜地的地温一般就保证不了适宜指标。此时蔬菜将出现一系列生理失调症状,黄瓜将出现生长点缩到顶叶下边,生长停止现象。或结的瓜大肚或弯曲,品质严重下降。而番茄坐果出现问题,落花落果,如点花
After entering the winter season vegetables grow in the protected area, but the fierce climate change in the outside world still plays a decisive role in the vegetable industry. Protected vegetable growth environment is special, generally planted planting, fat big water, ventilation is generally poor. Therefore, suitable for high humidity of pests and diseases occurred more serious, and difficult to control the larger. First, the prevention of vegetable physiological diseases. At this time the temperature changes, or windy weather. If there is fog or cloudy, when more than 7 days, the ground temperature of vegetables generally can not guarantee the appropriate indicators. At this point vegetables will appear a series of symptoms of physiological disorders, cucumber will appear growth point down to the bottom of the parietal, growth stops phenomenon. Or knot big belly or bending melon, a serious decline in quality. The tomato fruit problems, falling flowers, such as flowers