Stainless Steel Roller Shutter Door
Using advanced 201 stainless steel sheet, precision roll forming production process.
User-friendly design, stylish,durable ,safe anti-theft ,lighting, ventilation ,aesthetic ,practical, thermal insulation and free adjustable ,anti-peeping.
Intelligent control, multiply driving modes.
Variety of colors and styles optional.
Providing a comprehensive,specialized system solutions as users different requirements.
Integrated protection and decorative features together,the best replacement of traditional theft network security replacement; flexible way open ways, supporting hand control, group control. The door could be your safe rescue channel when in emergency.
Stainless Steel Roller Shutter Door,Remote Control Roller Shutter Door,Stainless Steel Grille Roller Shutter Door,Electric Stainless Steel Roller Shutter Door Shenzhen Hongfa Automatic Door Co., Ltd. , https://www.hfautodoors.com
The early and mid-field control measures for watermelon anthracnose are mainly agricultural measures and chemical control.
Agricultural measures: Do a good job in field management of watermelon after planting, maintain appropriate field humidity and night temperature, enhance plant disease resistance and reduce disease occurrence; cover the ground cover comprehensively, do well in the field, reduce field humidity to below 70% Available with 碧护 (anti-disease type) 20,000 times (3 g / mu) foliar spray, continuous medication twice, 2-5 leaf stage or transplanting after planting 1 time, interval 20-30 days for the second time To improve the adaptability and disease resistance of watermelon plants.
Chemical control: in the early and middle stages of the disease, spray protective agent 70% mancozeb wettable powder 300 ~ 500 times liquid, 50% prochloraz manganese salt wettable powder 1500 ~ 2500 times liquid, 50% methyl thiophanate Wettable powder 800 times solution, 80% anthrax thiram double wettable powder 800 times solution, 325 g / liter of difenoconazole & #8226; azoxystrobin suspension 30 ~ 50 / acre, spray once every 7 days, Even spray 2 to 3 times, pay attention to the alternating use of drugs to delay the emergence of drug resistance.
Control measures for watermelon anthracnose in spring
Watermelon anthracnose is one of the important diseases in the seedling stage and fruiting stage of watermelon. It is mainly harmful to leaves, but also can damage stems, petioles and fruits. The seedlings are damaged, and round or semi-circular brown or dark brown lesions appear on the edges of the cotyledons. There are often dark brown halos on the periphery, and the spots are often scattered with black small spots or pale pink sticky spots. The leaves are infected, initially round or irregularly shaped with water-stained spots, sometimes with wheel marks, and the spots are easily broken and perforated when dry. A pink viscous substance is formed on the lesions when wet. Excessive application of nitrogen fertilizer, poor drainage, poor ventilation, excessive density, plant weakness and heavy planting can lead to serious disease.
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