Economic Benefits and Technical Points of Papaya-Mustard Rotation
In order to understand the Papaya ringspot virus(PRSV)disease occurrence rate,yield and economic benefits under the continuous cropping of papaya and the papaya-mustard or pa-paya-sweet corn rotation,the investigation was carried out at Dahe Village,Hengzhou Town,Heng-zhou City,Guangxi.The results showed that:under the continuous cropping mode of papaya,the PRSV incidence of papaya was 70.7%,the disease grade was 5 and the annual average income was 3837.5 yuan/667m2;under the papaya-sweet corn rotation,the PRSV incidence was 17.7%,the dis-ease grade was 1 and the annual average income was 4582.5 yuan/667m2;under papaya-mustard ro-tation,the PRSV incidence was 14.6%,which was 56.1%lower than that in continuous cropping,and the disease grade was 1,and the annual average income was 8625 yuan/667m2,which was 124.8%higher than that in continuous cropping and 88.2%higher than that in papaya-sweet corn ro-tation.At the same time,the key points of cultivation techniques of papaya-mustard rotation mode is summarized to provide reference for further promotion.
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