1. Downy mildew: plant-derived fungicide 1.5% matrine solution, 80% dimethomorph water dispersant, 40% ethylphosphorus 800-fold solution, or 58% metalaxyl manganese zinc 500 Foliar spray such as liquid solution; the incidence of heavy frost urea·manganese zinc leaf spray, once a week, even spray 2 to 3 times. Linyi Fertilizer Network Copyright
Linyi Fertilizer Network Copyright
2, viral disease: the initial stage of the disease with plant-derived fungicide 0.5% lentinan water, 20% virus A400 times liquid spray, 7 days apart, even spray 3 times, or spray with 1.5% phytopathogenic emulsion 400 ~ 500 times It is sprayed 2 times every other day and 3 times in 7 to 10 days to prevent viral diseases. Linyi Fertilizer Network Copyright
Linyi Fertilizer Network Copyright
3, soft rot: in the early stage of the disease with plant-derived fungicide 5% allicin microemulsion, agricultural streptomycin 3000 times solution or neo-phytomycin 4000 times liquid spray, spray once every 10 days, continuous control 2 ~ 3 Times. You can also use 72% agricultural streptomycin 3000-4000 times solution, or new phytomycin 4000 times solution to root, and find that the severely strained plants are removed in time, and a layer of quicklime is sprayed on the root soil to avoid mutual infection when watering. It can also be sprayed 3 to 4 times with potassium permanganate 800-600 times in the period from the seedling stage to the rosette stage of Chinese cabbage, which can effectively prevent soft rot and cure downy mildew of Chinese cabbage. Linyi Fertilizer Network Copyright
Linyi Fertilizer Network Copyright
4, root swollen disease: 70% nitrochloronitrobenzene wettable powder per acre 2 ~ 3 kg, add 50 kg of fine soil mixed into the soil, sowing before the application or point application, 70% pentachloronitrobenzene The wettable powder is 800 times, or 50% of the thiophanate WP 500 times, and the solution is 0.3-0.5 kg per solution. Linyi Fertilizer Network Copyright
Linyi Fertilizer Network Copyright
5, bacterial spot disease: including bacterial angular leaf spot and bacterial black spot. In the early stage of the disease, plant-derived fungicide 5% allicin microemulsion, 72% agricultural streptomycin soluble powder 3000-4000 times liquid, or neo-phytomycin soluble powder 4000 times liquid spray, 40% amber copper · metalaxyl WP Powder 600 times liquid, 50% yield wettable powder 800-1000 times liquid, 80% mancozeb wettable powder 500 times liquid, 58% nail frost manganese zinc wettable powder 500 times liquid, etc., alternately used. Linyi Fertilizer Network Copyright
Linyi Fertilizer Network Copyright
6, black rot: in the early stage of the disease can be sprayed 75% chlorothalonil WP 600-800 times solution, or neomycin phytomycin 4000 times solution, 50% metalaxyl succinate WP wettable powder. Linyi Fertilizer Network Copyright
Linyi Fertilizer Network Copyright
7. Aphids: 1.5% matrine solution can be used as a plant-derived insecticide, or 1000-2000 times solution of 10% imidacloprid wettable powder, 4000% anti-wet powder 4,000-8000 times liquid, or the like, or Physical prevention and control of yellow board prevention. Linyi Fertilizer Network Copyright
Linyi Fertilizer Network Copyright
8, yellow stripe jumper: with 90% trichlorfon 1000 times liquid or 50% phoxim emulsifiable oil 1000 times foliar spray or irrigation root control, or physical control of the armor attracting core and sticky insect board prevention. Linyi Fertilizer Network Copyright
Linyi Fertilizer Network Copyright
9. Pieris rapae, Plutella xylostella, Rapeseed, Spodoptera litura: 2% pyrethrin water emulsion, 1% celangulin water emulsion, 5% fluridazine emulsifiable concentrate 2500 times liquid or 2.5% enemy Kill 800 times liquid spray, or physical control pheromone lure plus trap, intelligent insect killer to prevent. Linyi Fertilizer Network Copyright
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