It's mainly because the effect of biocontrol agents is not as good as chemical fungicide and the fermentation technology of biocontrol agents is not so perfect.
其原因多是由于生防菌单独使用难以达到化学杀菌剂的效果，或活菌制剂的发酵工艺不够完善。
Downy mildew is one of the most serious grape diseases, the usual treatment method presently is the application of chemical fungicide, but excessive spray brings many severe problems.
霜霉病是危害葡萄最严重的病害之一，目前采用的主要防治手段是喷施化学农药，但其用量过多也带来许多严重问题。
Fungicide a chemical that inhibits fungal growth. they are used to prevent fungal infection as well as to deal with existing infections.
抑制真菌生长的化学制剂。可用来处理已存在的感染，还可以防止真菌感染。
Fungicide a chemical that inhibits fungal growth. they are used to prevent fungal infection as well as to deal with existing infections.
抑制真菌生长的化学制剂。可用来处理已存在的感染，还可以防止真菌感染。
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