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1、将洋葱种子用300倍的40％福尔马林稀释液浸泡3小时,浸后用清水洗净,晾干后播种;以鳞茎方式繁殖的,可将鳞茎放入40℃-45℃温水中浸泡90分钟,然后置于冷水中散热,晾干后栽种,可有效灭杀洋葱种子携带的炭疽病及黑斑病病毒。
1, the onion seeds with 300 times 40% formalin diluted soak 3 hours, after immersion washed with water, dried and sown; bulblets breeding, the bulbs can be placed in 40 ℃ -45 ℃ warm water Soaked for 90 minutes, then placed in cold water to heat, dry and planted, can effectively kill onion seeds carry anthrax and black spot virus.