西藏林芝市茶树病虫害发生种类、分布及特点OA

To elucidate the current status of pest and disease occurrence in tea plantations on the Xizang Plateau,we systematically surveyed 26 representative tea plantations in three major tea-producing regions(Bomi-Bayi,Zayu,Motuo)of Nyingchi City,Xizang,since 2023.The results show that pests and diseases in Nyingchi tea plantations exhibited distinct regional distribution patterns and seasonal variations.A total of 8 disease species were recorded,among which the dominant disease Elsinoe leucospilaoccurred severely in the relatively high-altitude Bomi-Bayi tea region,while Exobasidium vexansand Sinodiscula theae-sinensisoccurred severely in the Motuo tea region.More than 40 pest species were identified,among which Matsumurasca onukii(Matsuda),mites and thrips caused prominent damage.Eotetranychus kankitusmainly occurred in the Bomi-Bayi tea region,whereas other major pests caused severe damage in the relatively mid-high altitude Zayu and Motuo tea regions.Compared with tea-growing regions in inland China,the main tea diseases in Xizang occurred relatively more severely,and sucking pests accounted for a high proportion in the pest community with severe localized damage.The findings of this survey provided fundamental data and scientific basis for the research and integrated management of tea pests and diseases in Xizang.