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为了使蔬菜提早上市 ,提高经济效益 ,早春天气回暖 ,菜农即开始进行定植。但由于这一时期气温很不稳定 ,时常会出现异常天气情况 ,如寒流大风天气 ,阴雪天气 ,往往使温室蔬菜遭受冻害 ,给菜农造成了严重的经济损失。为避免早春温室大棚蔬菜遭受冻害 ,生产者应注意以下几点。一?
In order to make vegetables market early, improve economic efficiency, pick up in early spring, vegetable farmers began planting. However, due to the unstable temperature during this period, abnormal weather conditions often occur, such as cold windy weather and overcast and snowy weather, which often cause greenhouse vegetable frost damage and cause serious economic losses to vegetable farmers. In order to avoid frost damage to vegetables in early spring greenhouse, producers should pay attention to the following points. one?