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西瓜原产非洲的热带地区,喜湿耐热,种子发芽要求温度在16℃以上,适温为25—30℃,苗期白天适宜温度为25—27℃,夜间为16—20℃,30℃时植株同化作用最强,高于40℃和低于10℃时对开花结果都不利。要夺取西瓜的优质高产,就必须根据西瓜的生态特性,按照当地的气候特点,搞好科学管理,主要应注意以下几点: 一、防寒育苗。西瓜怕霜冻。为了充分利用气候资源,一般应在终霜前播种,终霜后定植于露地。为防止苗期霜冻为害,促苗早发,可采用双层
Watermelon origin of tropical Africa, hi wet heat, seed germination requires a temperature above 16 ℃, suitable temperature 25-30 ℃, seedling suitable temperature during the day 25-27 ℃, 16-20 ℃ at night, 30 ℃ When plant assimilation strongest, higher than 40 ℃ and below 10 ℃ on the flowering results are negative. To seize the high-quality watermelon production, it must be based on the ecological characteristics of watermelon, according to the local climate characteristics, improve scientific management, the main points should be noted that: First, cold nursery. Watermelon afraid of frost. In order to make full use of climatic resources, it is generally planted before the final frost and then planted in the open field after the final frost. In order to prevent frost damage at seedling stage, early seedling growth can be doubled