Effect Of Bagging On Grape Yield And Quality In Guangxi Monuntain Area

In this experiment in April 2006 to July Town in the Guangxi Huanjiang county for a six-year-old vineyard (middle management level), Experiment with J.F.grape and J.Y.grapes, Test materials were fruit bags newspapers, Kraft paper and Grape special bags. Test objectives are: grape cluster on the sets of different materials fruit bags, pre-harvest bags and removable bag removal, bagging different comparative test of time, revealed bagging of grape yield and quality on Mountain in Guangxi.The main results were showed: (1) The grape cultivated in Guangxi mountain area is easy damaged by bird, it is different effect to use different material to bag on grape , and it is best to use Grape special bags;(2) It is no influence on yield wheter to pick the bag or not before grape harvests, but it is influence on it's appearance,the main behaviour is that:the grapes that not plucking sack are fruit thick and their colour are homogeneous; The grapes plucking a bag are easy damaged on the faces of grape ;(3) It is no obvious influence on yield to use different material bags;(4) Grape J.F. cover fruit bag of different material affect is notable to proportion of ear and granule by diseases and insects,and it is best to cover grape special use bag ;(5) It has improved candy of grape fruit contents of J.F. grape to cover unlike material bag. This may be that the cover bag queen forms one kind of relatively stable tiny region environment within fruit bag, condition having improved fruit growth growth, beneficial to candy classifies the organic accumulation;(6) The grape fruit ear and fruit granule is minimal that cover bag in 20th-day after the flower is fade on May 8 , the difference is not obvious that covered on May 28 , June 18 and July 8 fruit, but the effect is best on June 18.Summary:Bird pest of grape cultivation is an important subject on mountain in Guangxi, affect the yield and quality of grapes; Select appropriate materials bagging, it's an effective way to Guangxi mountain grape cultivation solution not disease, insects, bird damage; Bagging the proper period of the grape is an important factor on yield and quality assurance; Bagging increase the sugar content of grape fruit too.