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苗床用土和盆栽用土
苗床用土和盆栽用土,都必须用无病新土或消毒土。土壤消毒的方法是每平方米用40%福尔马林50毫升对水8-12.5千克,浇灌土面,用塑料薄膜覆盖4-5天,揭除覆盖物,经7-10天后播种;或在栽植、播种前条施70%的五氯硝基苯粉剂与80%代森锌的等量混合物,每平方米地面用8-10克。
(1) both seedbed soil and potted soil must be treated with new disease free soil or disinfectant soil. The method of soil disinfection is to water 8-12.5 kg of water with 40% formalin 50 ml per square metre, water the soil surface, cover it with plastic film for 4-5 days, remove the mulch, and sow it after 7-10 days, or apply 70% pentachloronitrobenzene powder and 80% zinc substituted mixture before planting and sowing, and use 8-10 grams per square metre of ground.
(2)播种或种植前灌水,保持土中水分充足,在幼苗出土后20天内,严格控制灌水。
(2) Irrigation should be strictly controlled within 20 days after the seedlings are unearthed.
(3)幼苗发病初期,用70%甲基托布津700-800倍液浇灌,可起到灭菌保苗的作用。
(3) In the early stage of seedling disease, 70% methyl tobrazine 700-800 times solution irrigation can play a role in sterilization and seedling protection.

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