Study On Popularization And Application Of Red Grape Bagging Technology In Qujing City

The experiment was carried out in April-August 2016 in a middle-aged vineyard of 5-year-old in Cui Feng Street,Qujing Economic and Technological Development Zone.The test varieties were single-trellised cultivars.The row spacing was 1x3 meter red Earth grapes,test bag material for the homemade newspaper bags,grape bags.The purpose of the experiment is to study the effects of bagging on the quality of grape fruits and provide theoretical basis and technical support for production and application.The main findings are as follows:1.Bagging can promote grape fruit coloring,improve the surface finish,can effectively prevent the occurrence of cracked fruit.In different treatments,the color of the fruits of the newspaper bag and the bag of the special bag were 70% and 98%,respectively.The color of the bag without bagging was dark purple.Set of newspaper bags,special bags,not bagging ears,fruit cracking rates were 40%,20.83%,13%,6.25%,100%,59.5%.2.Bagging increased the total sugar,vitamin C,soluble solids content of grape fruits,reduced the total acidity of fruit and the bagged fruit flavor was obviously better than the no bagging.In the Qujing region,the red globe grape flowering after 30 days-50 days bagging,grape fruit quality is good.3.Fruit bag of different materials had little effect on grape yield,but different bagging time had different effect on single spike and single grain weight,and the bagging effect was the best on May 10.In the grape picking 10 days before the harvest It has little influence on yield and no effect on the output of the bag,which has a great influence on the appearance.The main appearance is that the fruit surface of the bag before pick-up is not colored,and the surface of the bag is thick.4.Qujing grape growing region vulnerable to birds,white rot,the damage caused by the night moth,fruit bag of different materials,prevention and treatment of birds,white rot,the night-worm had different effects,which sets the best effect of special bags.Set of newspapers bags,sets of special bags,not bagging,ear injury by birds were 14%,0,22%;average disease index were 21.3,5.2,40.2,integrated control of pests and diseases in the vineyard,the disease index can be reduced 10.8,3.4,23;affected by the night worm moth,the proportion of fruit were 8.0%,8.5%,0.0%,0.0%,11.9%,12.5%.In summary,the bagging improves the appearance quality of the fruit and makes the fruit even and bright in color;the content of total sugar,vitamin C and soluble solids of the grape fruit is increased,and the grape taste is good.May 10 for bagging,can improve grape yield and quality.Select the appropriate fruit bag is to solve birds,white rot,the effective way to the night moth damage.Bagging can bring significant economic,ecological and social benefits.