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正确揭盖草苫对冬季大棚蔬菜生产极其重要,在此,提醒广大农民朋友,揭盖草苫应讲究科学:一、上午揭草苫我曾问过许多菜农:早晨揭草苫的根据是什么?回答非常一致:太阳光照到大棚上就揭苫。照到什么程度揭苫?大多数菜农回答不出来。应该用棚内气温来判断揭草苫的时间是否合适,方法是:揭开草苫棚内气温会降低,但降低不能超过1℃,超过1℃说明草苫揭早了,揭开草苫棚内气温没有降低,说明草苫揭晚了。
Correctly uncovered grass mullet vegetable production in winter is extremely important, here, to remind the majority of farmers friends, cover the mulch should pay attention to science: First, the morning 揭 苫 苫 I have asked many vegetable farmers: The answer is very consistent: the sun shines upon the shed. According to what extent to reveal? Most farmers can not answer. It should be used to determine the temperature of the greenhouse shed to determine whether the time is appropriate, the method is: Uncover the temperature inside the shed will be reduced, but can not be reduced more than 1 ℃, more than 1 ° C grass hides exposed early, The temperature did not decrease, indicating that the grass is late.