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伴随盛夏季节到来,大棚长季蔬菜进入了生长旺期,秋茬蔬菜陆续进入了定(种)植期,棚室应根据温度变化,安排好越夏生产。一、合理控温1、及时降温。当阳光过强,棚内白天温度超过30℃以上,通过放风仍达不到降温效果时,就要设置遮阳网降低温度,同时还可以防止果实日灼病的发生。使用遮阳网时,在阳光强度变弱和阴天时要及时收起,以免影响光合作用。2、保留老叶。夏季,除大雨天外,大棚几乎昼
With the advent of summer season, the greenhouse vegetables have entered the growing season, autumnal vegetables one after another into the set (species) plantation, greenhouse should be based on temperature changes, summer arrangements for the production. First, a reasonable temperature control 1, timely cooling. When the sunshine is too strong, the shed temperature during the day more than 30 ℃, still can not reach the cooling effect through the wind, it is necessary to set shade network to reduce the temperature, but also can prevent the occurrence of sunburn fruit. When using the shading net, it should be put away in time when the sunlight intensity is weak and cloudy, so as not to affect the photosynthesis. 2, keep the old leaves. Summer, in addition to rainy days, the greenhouse almost day