It is not advisable to blindly warm up the greenhouse under hazy weather

In the continuous haze of the weather, many vegetable farmers neglected the importance of light, and often put warming in the first place. The way to increase the temperature is to ignite in the shed and continue to heat up day and night. The author believes that blinding warming is not desirable.

Blind warming is detrimental to the growth of vegetables. No matter if it is fine weather or haze, vegetables need respiration. Respiration absorbs oxygen to produce carbon dioxide. The process of respiration is the transformation of organic matter into crops. We can call it the process of “consumption”. . In the management of vegetables, we pay attention to maintaining the temperature difference between day and night. The purpose is to reduce the nighttime temperature, reduce the respiratory consumption, and promote the delivery of photosynthetic products as much as possible, instead of maintaining a higher temperature at night and accelerating the respiration. If this is done, the respiration will be strong and the decomposition of photosynthetic products will be accelerated. Instead, the growth of vegetables will be promoted, and the leaves of the vegetables will be large, thin and long.

Therefore, under hazy weather, when light becomes stressful, photosynthetic products are rarely produced, and when the nutrients accumulated in the stems and leaves of the vegetables are limited, such malignant warming, especially at night, will accelerate the respiration of vegetables and speed up the process. The nutrient consumption of plants will make the vegetables “idle”. For a long time, it will inevitably lead to premature plant failure and the result of “thin yellow muscle”.

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