2019~2020年9月份调查，古浪县设施葡萄灰霉病发生十分普遍，全县土木结构设施葡萄灰霉病发病率为69.0%~90.6%，钢架结构设施葡萄灰霉病发病率为29.4%~40.1%；单杆多叉栽培葡萄灰霉病发病率为54.7%~71.6%，单杆单叉栽培葡萄灰霉病发病率为14.2%~28.7%；管理粗放的设施内葡萄灰霉病发病率为87.1%~93.0%，管理精细的设施内葡萄灰霉病发病率为11.0%~19.0%。发病严重的设施内葡萄减产35%~70%，果实失去商品价值。经过2年的调查研究，基本摸清了甘肃省古浪县设施葡萄灰霉病的发病规律，分析了葡萄灰霉病发生严重的原因，总结出了“绿色精准”防控措施，以期为我县设施葡萄产业大面积防控灰霉病提供科学依据。
According to the survey from September 2019 to 2020, the occurrence of gray mold in facilities in Gulang County is very common. The incidence rate of gray mold in the facilities of civil engineering in the county is 69.0%~90.6%, and the incidence of gray mold in facilities of steel structure is 29.4%~40.1%; the incidence of gray mold in single-stalk and multiply cultivated grapes is 54.7%~71.6%, and the incidence of gray mold in single-stalked and single-pronged grapes is 14.2%~28.7%; the incidence of grape gray mold in facilities with extensive management is 87.1%~93.0%, and the incidence rate of grape botrytis in well-managed facilities is 11.0%~19.0%. Grape yields in severely ill facilities have decreased by 35%~70%, and the fruits have lost their commercial value. After 2 years of investigation and research, we have basically figured out the incidence of grape gray mold in facilities in Gulang County, Gansu Province, analyzed the serious causes of grape gray mold, and summed up “green and precise” prevention and control measures, hoping to provide a scientific basis for the large-scale prevention and control of gray mold in the grape industry of Gansu province.
