After some of the drafting curtains suddenly cleared on a continuous cloudy and rainy day, they first pulled up one third or one quarter of the grass curtains that were covered on the shed. Do not pull all the straws to expose the vegetables to sunlight. When the sun is too strong, you can open the front face of the shed first, because the light entering from the front face of the shed is mostly scattered light. After a period of time, the turf curtain is gradually pulled up and the vegetable seedlings will not Acute wilting occurred.
Repeatedly pulling the straw curtain When the continuous rainy weather is suddenly clear and fine, you can pull the straw curtain for 5 minutes and then put it down. After 5 minutes, pull it up again. This way, the interval time will gradually increase, allowing a small amount of light to enter. After 3-5 times of putting, the vegetables in the shed will adapt to the suddenly changing environment. The leaves of the plants will stretch normally, and natural wilting will no longer occur. If symptoms of mild wilting are found, then combined with spraying warm water to increase soil moisture and reduce the evaporation of leaf water, so as to alleviate the "flash seedlings."
If the temperature outside the shed is not very low, the grass curtain can be pulled earlier. Requires careful observation of weather changes. If it is found that the weather is going to be sunny, in the case that the temperature outside the shed is not very low, the grass curtain can be rolled up before the sun shows up. This is compared to the drawing of vegetables after the sun comes out. The risk of acute wilting is much smaller.
After shading the drafting curtain with a shading net, after covering the shading net for more than ten minutes with the shading net, it is also possible to effectively avoid the phenomenon of vegetables “flashing seedlings†appearing due to the excessive pulling of the straw curtain.
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