Facility vegetables should focus on low temperature and high humidity
As the temperature continues to fall, it is increasingly detrimental to the production of vegetable facilities. In particular, due to lower temperatures and reduced ventilation time, the humidity in the protected area increases, causing and aggravating the occurrence of low-temperature and high-humidity diseases such as gray mold, sclerotinia, and late blight. The production should be vigilant and take the following measures to prevent:
Strengthen monitoring. Pay close attention to the weather forecast and disease occurrence dynamics, do a good job of cold insulation and heat preservation according to weather changes, and add heating and lightening equipment if necessary.
Reasonably let the air drain. If the temperature is high at noon on cloudy days, it should be properly ventilated. After the weather is clear and the temperature rises, do not suddenly uncover all the straw curtains. You should first expose one by one or one by one, and then gradually uncover the plants after adaptation.
Strictly control watering to avoid watering on cloudy days; loosen soil in time, increase ground temperature, and promote new roots. Timely medication. For the control of gray mold and sclerotinia, 50% procymidone WP, mefenillin 65% metformin WP, singapore 400 g / liter of pyrimethanil suspension, etc., or per mu Use 15% procymidone to smoke 250-300 grams of fumes. For the prevention and treatment of late blight and downy mildew, you can choose Kelu 72% cream urea manganese zinc wettable powder 600 times liquid, or Jin Lei 68% fine nail cream manganese zinc water dispersible granules 600 ~ 800 times liquid, or fast net 52.5 % ketone cream urea cyanide water dispersion granules 1800 times solution, or Amishida 2% azoxystrobin suspension 1500 times liquid spray; can also be used before the onset of 45% chlorothalonil smoke agent 250 ~ 300 grams per acre Smoke prevention. The spray should be even and meticulous, avoiding the dripping or flowing of the liquid into the leaves, and silicone additives can be added to the liquid to improve the control effect.
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