Powdery mildew has been greatly affecting the growth of crops, but it has led to a decline in yields. Pesticides such as tebuconazole, ether oxystrobin and chlorfenapyr are often used to treat this disease. Methods as below: 1. Strengthen melon resistance The selection of resistant varieties, different varieties have different resistance to powdery mildew, it is necessary to choose the disease-resistant and disease-resistant varieties according to local conditions in production practice. 2. Maintain environmental sanitation The diseased leaves were removed in time and the diseased leaves were brought to the outside of the shed and burned. 3. Scientific watering In the morning on a sunny day, the small water should be poured, and the flooding should be avoided. Drip irrigation should be taken in places where conditions permit. 4. Cultivation control Melon generally requires a high-quality ring fertilizer of 6000 to 7500 kg per mu, 500-1000 kg of decomposed chicken manure, 50 kg of superphosphate and grass ash as base fertilizer, and timely topdressing, foliar fertilizer and carbon dioxide fertilization, to increase the light as much as possible. Prevent premature senescence of plants to improve disease resistance of plants; cultivation methods should be covered with sorghum cultivation and plastic film to protect roots, enhance ventilation and light transmission, reduce humidity; suspend in time, remove dead leaves and bottom leaves, and bring them out of the field Centralized treatment; proper control of watering, open sweet potatoes should be well drained after rain, reducing the relative humidity in the field. 5. Biological control In the early stage of powdery mildew, spray 2% agricultural anti-120 water agent 200 times solution or 2% agricultural anti-BO-10 water agent 200 times solution, spray once every 4 to 5 days, and even spray 2 to 3 times. 6. Physical control At the beginning of the disease, spray 27% of the high-fat film emulsion 80-100 times solution, spray once every 5 to 6 days, and spray 3 to 4 times to form a protective film on the leaf surface to prevent the invasion of pathogenic bacteria. 7. Chemical control In the early stage of the disease, 40% Fuxing emulsifiable concentrate 8000 ~ 10000 times solution, 25% tebuconazole 1000 times solution, 75% chlorothalonil WP 600 times solution, 75% Dakening WP 600 times solution, 50% more 30-800 times solution of fungicidal wettable powder, 800-1000 times solution of 50% methyl thiophanate-containing wettable powder, 600 times liquid of 80% loud WP, ​​sprayed once every 7-10 days (triazolone spray) It should be sprayed a second time 15 days apart, and sprayed 2 to 3 times. It is forbidden to use the drug 7 days before harvest for safe harvesting. In addition to harming melon, melon powdery mildew also harms cucumber, zucchini, pumpkin, bitter gourd, watermelon and some flowers, so it is correct to use fungicides in advance to prevent and timely control. More pesticide knowledge , please pay attention to China Pesticide Network
Grey Marble series-cloudy
Grey marble, we produce three kinds of cloudy grey marble: cloudy grey , cloudy grey (brown), cloudy grey (white).grey marble
is hot sale around the world,especially these two years.grey marble background is very suitable for wall and floor
tiles,inside or outside.we mostly produce slab and tiles,you can purchase grey marble slab to produce grey
marble countertops-which you prefer.
We
call this Cloudy grey marble ,we mainly produce slab and tiles:
1:
slab, thickness 1.6/1.8/2/3cm
2.tiles,normal
61*30.5cm/30.5*30.5cm,thickness normally 10mm,custom size is welcome.
Surface:
polished, honed,
Supply
Ability: 5000 square
meters per month.
Uniqueness:
strict Processing standard, size tolerance standard, crystal lines standard, 100%
Inspection before shipping,very stable on supply.
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