Recently, the weather has become colder and colder. As the temperature has decreased, the ventilation time of the greenhouse has decreased, and the humidity in the greenhouse has increased. The vegetable leaf mold in many vegetable farms is more serious. Although the disease does not infect the fruit, it can lead to the leaf. The function is reduced, which in turn affects the yield and quality of vegetables. Therefore, Huinong Xiaobian reminds the majority of vegetable farmers to take precautionary measures to avoid the outbreak of leaf mold.

First, pay attention to the regulation of the shed environment

Foliar disease occurs at a temperature of 20-25 ° C and a humidity of 85% or more, especially when the leaf condensation time is long in the morning and evening. Therefore, it is necessary to strictly control the temperature and humidity of the shed, especially in terms of humidity, depending on the weather. Ventilation, ventilation, minimize the humidity of the greenhouse, put a small wind for 10-20 minutes after pulling the straw curtain in the morning, and discharge the moisture and exhaust gas in the shed to reduce the condensation of the blade.

In addition, the watering link should also pay attention to proper control of watering, preferably by watering equipment such as drip irrigation or micro-spraying, to reduce the amount of watering, and to take measures such as ventilation after watering.

Second, pay attention to roots and leaves to improve resistance

After entering the winter, low temperature and low temperature often occur, and some vegetable farmers like to retain more fruit, the roots and leaves of the plant are heavily burdened, the plant resistance is weak, and leaf mold is easy to occur. Therefore, it is necessary for the vegetable farmers to pay attention to the root-protecting leaves. Under the premise of reasonable fruit retention, appropriate application of some fertilizers such as chitin, alginic acid, microbial fertilizer, etc., and spraying of amino acids and chitin foliar fertilizers on the foliage, improve Plant overall resistance. In addition, when the whole branch is snoring, the old leaves and yellow leaves in the lower part of the plant are removed in time, which can enhance ventilation and light transmission, and can reduce the occurrence of diseases.

Third, pay attention to strengthen drug prevention

Any disease is easy to prevent and difficult to treat. In the usual management, while spraying some preventive agents, it can control the occurrence of diseases such as leaf mold, such as chlorothalonil, tebuconazole, and thiophanate-methyl.

Some of the agents that have a good effect on controlling leaf mold include: sputum, tebuconazole, propiconazole, difenoconazole, polymycin, etc., and can be added with ethoxylated vegetable oil additives when spraying. Treatment of leaf mold, and when spraying on the disease, it is recommended that the vegetable farmers spray the front and back of the blade and spray it thoroughly.

About the prevention and control measures of leaf mold in greenhouse vegetables, Huinong Xiaobian said that here, as long as you follow the above steps to prevent and control, you do not have to worry about the damage of vegetable leaf mold.

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