昆明菜区大白菜根肿病防治技术研究初探

 在昆明地区,4～10月份为大白菜根肿病发生流行期,尤以7～10月危害尤烈,11月～翌年3月发病轻。4～10月的温、湿度及土壤偏酸的适生环境,加重了根肿病的发生及危害。大白菜整个生育期均可感病,尤以2叶期最易感染,培育无病壮苗是防病、保苗、保产的关键措施。大白菜品种间对根肿病有抗病性差异的表现,初步认为星星、白菜王等品种较抗病。百菌清、多菌灵、药肥复配剂为防治根肿病的有效药剂,施药方法以播前土壤施药为好。

A Preliminary Study on Control Strategy of Cabbage Clubroot in Kunming

The cabbage clubroot occurs from April to October in Kunming, especially from July to October, but not so serious from November to next March. The temperature and humidity from April to October and acid soil increase the disease occurrence and severity. All the stage of the cabbage could suffer from clubroot by Plasmodiophora barssicae , especially at two leaf stage. Breeding uninfected strong seedlings is the important technique to control the disease. The resistance to clubroot between varieties are for example, the varieties "Xingxing", "Baicaiwang", etc. have resistance, chlorothalonil carbendazim,Genbaofeng are some the effective fungicides to control clubroot. By treating soil before seeding.