Pay attention to respond to greenhouse cold-type diseases
2021-08-04 12:23:12
At present, the continuous decline in temperature has adversely affected the production of vegetables in greenhouses. The greenhouses are prone to increase in humidity due to reduced air-releasing times, and cause and aggravate cold-type diseases such as gray mold, sclerotinia, and late blight. Therefore, vegetable farmers should be vigilant and adopt the following preventive measures:
1. Strengthen the field investigation and monitoring, pay close attention to the disease dynamics, and pay attention to the weather forecast at any time. According to the changes in the weather, the cold insulation work should be well done. If necessary, additional warming and lighting enhancement equipment should be added.
2. According to the weather conditions, it is reasonable to ventilate and ventilate, even if it is cloudy, select proper ventilation when the temperature is high. After sunny temperature rise, do not suddenly uncover all the straw curtains. Appropriate and then gradually opened.
3. Strictly control the watering, avoid watering in cloudy or cloudy days after pouring; timely loose soil, increase ground temperature, and promote new roots.
4. Select the right-handed drug in a timely manner on the sunny day, and use the precise dispensing meter and the qualified drug delivery device to spray evenly and evenly, avoiding the liquid to flow along the blade or flowing. According to the instructions to add agricultural silicone spray additives to improve efficacy. Gray mold, sclerotinia should be used 50% Suo Keling wettable powder 800 ~ 1000 times or 65% Trimethoprim wettable powder 800 ~ 1000 times or 40% Shijiale suspension 800 ~ 1000 times spray, also Can use 20% speed Ke Ling smoke agent 250-300 grams per acre smoke. For late blight and downy mildew, 72% Kelu wettable powder 600 times liquid or 68% Jinlei water dispersible granules 600-800 times liquid or 52.5% fast water dispersible granules 1800 times liquid or 25% Ami Xida suspension agent 1500 times spray, can also be used before the onset of 45% per acre chlorothalonil smoke 250 to 300 grams of smoke prevention.
1. Strengthen the field investigation and monitoring, pay close attention to the disease dynamics, and pay attention to the weather forecast at any time. According to the changes in the weather, the cold insulation work should be well done. If necessary, additional warming and lighting enhancement equipment should be added.
2. According to the weather conditions, it is reasonable to ventilate and ventilate, even if it is cloudy, select proper ventilation when the temperature is high. After sunny temperature rise, do not suddenly uncover all the straw curtains. Appropriate and then gradually opened.
3. Strictly control the watering, avoid watering in cloudy or cloudy days after pouring; timely loose soil, increase ground temperature, and promote new roots.
4. Select the right-handed drug in a timely manner on the sunny day, and use the precise dispensing meter and the qualified drug delivery device to spray evenly and evenly, avoiding the liquid to flow along the blade or flowing. According to the instructions to add agricultural silicone spray additives to improve efficacy. Gray mold, sclerotinia should be used 50% Suo Keling wettable powder 800 ~ 1000 times or 65% Trimethoprim wettable powder 800 ~ 1000 times or 40% Shijiale suspension 800 ~ 1000 times spray, also Can use 20% speed Ke Ling smoke agent 250-300 grams per acre smoke. For late blight and downy mildew, 72% Kelu wettable powder 600 times liquid or 68% Jinlei water dispersible granules 600-800 times liquid or 52.5% fast water dispersible granules 1800 times liquid or 25% Ami Xida suspension agent 1500 times spray, can also be used before the onset of 45% per acre chlorothalonil smoke 250 to 300 grams of smoke prevention.
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