Cauliflower black spot, you can use imidacloprid manganese salt, pyraclostrobin or phenyl ether metronidazole. Pyrimethanil plus potassium dihydrogen phosphate spray, the interval of 7 days in the spray once.

Frosty mildew, you can use 霜脲 - manganese zinc, frosty mildew, ethylphosphine - manganese zinc, methomyl - manganese zinc, allylmorpholine, frosty mildew - epidemic net, silver Fali (flumioxazin, dimethoate), Puccinimiphos-methyl, Puccinimiphos-methyl. Difenoconazole), Prilosec (Fosfomycin hydrochloride) and other foliar fertilizer sprays, the interval of 7 days continuous spraying once.