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对刚出土的除虫菊幼苗应进行地面消毒工作,防止幼苗根基腐烂死亡,为此应做好以下两项措施: 一、若在播种时未进行土壤消毒,小苗出土后应用多菌灵、唑菌威等杀菌剂进行消毒。幼苗要有充分光照,若用大棚育苗湿度不宜太大,棚内气温达25度时应适当放风,让棚内空气流通。挥发棚内空气中水份,有利于幼苗健壮生长。二、除虫菊幼苗在未形成木质化时,其自身还未开始产生菊酯,为
The newly unearthed pyrethrum seedlings should be disinfected on the ground to prevent the decay of seedlings decay, this should be done the following two measures: First, if the soil is not sowed in the disinfection of seedlings after the application of carbendazim, Sterilizers and other disinfection. Seedlings have sufficient light, if the greenhouse nursery humidity should not be too large, the shed temperature should reach 25 degrees should be appropriate to let the air shed ventilation. Volatile moisture in the air shed, is conducive to the robust growth of seedlings. Second, pyrethrum seedlings in the formation of lignified, its own has not yet begun to produce pyrethrins