Watermelons in arch sheds are prone to wilting after a cloudy day. Vegetable farmers should pay attention to the weather changes and prevent the acute wilting of watermelon.
The acute wilting of watermelon is caused by excessive transpiration of Jiuyinshaqing plants. In this regard, high-temperature sheds can be relieved by "covering curtains", but the arch sheds do not have grass curtains, which is not good for shading treatment, so how can melon farmers prevent acute wilt when they suddenly become sunny after facing cloudy days?
First of all, when the weather is clear, the vegetable farmer should open all the vents of the arch shed in time to prevent the temperature in the shed from rising suddenly, causing the plant to have too large a transpiration effect, and the water absorbed by the root system cannot meet the needs of the plant, resulting in wilt.
Secondly, rooting agents are applied to promote root development. Vegetable farmers can irrigate the roots with chitin or rooting agents to promote root growth. At the same time, pay attention to that after a cloudy day, it should be sunny and you should not water it immediately, otherwise it will increase the symptoms of wilting of the plant. Because the ground temperature is low in the shed after a cloudy day, the root activity is weak, and watering immediately after the sunny day can easily cause root injury and prolong the recovery time of the root system and increase wilting.
Thirdly, spray the leaves in time. If the leaves of the watermelon plant lose too much water and last for a long time, the leaves will have dry leaves and die. Vegetable farmers can spray water in time to increase air humidity, reduce leaf transpiration, and achieve the purpose of protecting the leaves. Vegetable farmers can combine 2000 times of chitin and 500 times of nucleotides when spraying water to improve the nutritional level of plants and promote the growth of plants.
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