Spring greenhouse kale disease prevention and control after planting kale cotyledons yellow, plant growth is slow, may be affected by pests and diseases; can be used with the following agents to prevent and control: 35% chlorpyrifos dispersible granules 6,000-15,000 times, 52.25% chlorpyrifos chlorpyrifos emulsifiable concentrate 1,000-1,500 times, 48% chlorpyrifos emulsifiable concentrate 800-1,000 times, 5% methamidophos avermectin benzoate microemulsion 7500-10000 times, 10% bifenthrin emulsifiable concentrate 3000 times, 20% alpha-cypermethrin emulsifiable concentrate 2000 times, 70% imidacloprid wettable powder 7500-10000 times, 10% allylcarbamate soluble concentrate 3000 times, 20% acetamiprid soluble powder 6500-10000 times, 28% cyano-cyano-synthothiazate emulsifiable concentrate 1000-1500 times 0.5% small tiller base aqueous 500~800 times, 77% copper hydroxide wettable powder 400~600 times, 25% propiconazole emulsifiable concentrate 3,000 times, 80% complex state diclofenac manganese zinc wettable powder 1,000 times, 50% pyrimethanil dry suspension 2,500 times, 25% pyrimethanil suspension 1,500 times, 15% oxadiazine aqueous solution 800~1,000 times, 80% oxamyl-fumonisin wettable 400~800 times, 70% tebuconazole soluble powder 3000~5000 times, 30% benzyl-propiconazole emulsifiable concentrate 3000 times, 77% copper hydroxide wettable powder 400~600 times, 15% mixed amino acid copper-zinc-manganese-magnesium aqueous agent 300 times, and any one or two of the above agents can be combined with 50% chlorobromo isocyanuric acid soluble powder 1500 times, the 0.15% natural brassinol emulsion 6000-10000 times, green wind 95 600 times, Kobelco plant eugenol 1500-3000 times (transplanted crops, drug and fertilizer damage, freezing, waterlogging, strong roots and strong seedling, control of Wang use 1500 times) mixed evenly foliar spray.

Also the supply of nutrients may not be sufficient, you can use the following foliar fertilizers for fertilization to promote growth: 1, plant power 2003 1000 times foliar spray, 2, 0.15% natural brassinosteroid emulsifiable oil 6000-10000 times foliar spray, 3, Kobelco plant eugenol 1500-3000 times (transplanted crops, drug and fertilizer damage, frost, flooding, strong roots and strong seedling, control of prosperity) use 1500 times) foliar spray. (1500 times) foliar spray, 4, Green Wind 95 600 times foliar spray, 5, Jinbang 1 plant health antibiotics 500 times foliar spray, 6, Green Hen Tianbao high efficient plant yield enhancer 1500 times foliar spray, 7, the new natural amino acid-containing foliar fertilizers 300-500 times foliar spray, 8, Qiyin plant gene activator 1500 times foliar spray, 9, the new Nongbao multi-element composite foliar fertilizers 300 times foliar spray, 10, 1.4% sodium dinitrophenol aqueous agent 1500~3000 times foliar spray, 11, green Yangkang-JinRiBao amino acid-containing foliar fertilizer 300~500 times foliar spray, 12, EnBiLai high-efficiency liquid fertilizer 1500 times foliar spray, 13, 0.136% gibberellic acid-indoethyl brassinol wettable powder (Bi-protecting) 10,000~12,000 times foliar spray. 14, Ming Yue seaweed broad-spectrum foliar fertilizer (containing alginate organic water-soluble fertilizer) 800 ~ 1500 times foliar spray for fertilizer can be.