The perforated metal including glavanized perforated metal, stainless steel perforated metal, painted perforated metal, aluminium perforated metal, etc .
Hole type: round, long circle, oval, square, rectangular, diamond, hexagon, cross-shaped and other special-shaped hole
The technology of perforated metal : stamping, leveling, cutting, bending, reel, welding, stereotypes, surface treatment.
In
generally , the perforated metal be used on mining, machinery,
food,sports supplies, kitchen supplies, silencer, decorative,
construction, electronics and transportation .
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Facility vegetables to prevent disease
At present, the temperature continues to fall, which is unfavorable for the production of facility vegetables. In particular, it is easy to increase the humidity in the protected area due to the reduction of ventilation time, causing and aggravating the low-temperature and high-humidity diseases such as gray mold, sclerotinia and late blight, and the production should be vigilant. Take the following measures to prevent:
Strengthen monitoring and 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.
Reasonable air release and wetness should be properly ventilated during the high temperature at noon on cloudy days. 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 the watering to avoid watering on cloudy days; loosen the soil in time, increase the ground temperature, and promote new roots.
Timely medication to control gray mold, sclerotinia disease, optional 50% procymidone WP, moldy mildew 65% methyl sulfide · mildew WP, Shi Jiale 400 g / liter of pyrimethanil suspension and other drug spray, Or use 15% of procymidone tonicity of 250 to 300 grams of smoke per acre. 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 Jinlei 68% fine nail cream·manganese zinc water dispersible granule 600～800 times liquid, or fast Net 52.5% ketone·Cream-Cyanide water-dispersible granules 1800 times solution, or Amishida 25% azoxystrobin suspension 1500 times solution spray; can also use 45% chlorothalonil smoke agent per acre before the onset 250~ 300 grams of 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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