Effects of Different Returning to field Treatment of Winter Pruned Branches of Grape in Solar Greenhouse on Plant Disease Susceptibility
In order to effectively reduce the ability of disease transmission by using winter pruned branches of grape in solar greenhouse,the cuttings were ditched and returned to field to study the effects of different sterilization and drying treatments before returning to field and different burying depth treatments on the rot rate of buried branches and the incidence and disease index of powdery mildew,downy mildew and gray mold in the following year.The results showed that the incidence of powdery mildew,downy mildew and gray mold,the disease index and the rot rate of buried branches were the lowest when the winter cut branches of grape in solar greenhouse were sprayed with 300 times liquid of 45% stone sulfur mixture before ditching and drying for 10 days and buried 40～60 cm at the time of returning to the field,and the comprehensive effect was the best.Therefore,it was suggested that the winter pruned branches of grape in solar greenhouse should be used first when returning to the field.
grapewinter pruned branchreturning to field treatment
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