Pear Bagging Technology
1. The role of pear bagging (1) can avoid a variety of pests and diseases. Such as ringworm disease, black spot disease, pear sucking fruit moth, pear fruit moth, etc.; at the same time can prevent bird harm. (2) It can effectively improve the appearance of pear fruit, prevent pollution of coal stains, rust spots and medicine spots on the fruit surface, make the fruit spots smaller, less, and lighter, and the fruit surface is bright and clean, and the commodity is good. (3) Reducing pesticide pollution and improving the storage of pears. 2. Pear bagging method (1) Before the bagging, do a good job of fruit thinning work Generally 4 meters 2 meters of pear trees (mainly refers to the yellow flower, crest, fragrance and other varieties) set the number of fruit per plant 100-120 , control the yield of about 2000 kilograms per mu. (2) Before the bagging, spray the fungicide and insecticide to spray fruits to kill the fruit surface bacteria and insects. Should use water agent, powder. It is necessary to control the use of emulsions. Long-term use of emulsions can cause injury and prone to fruit rust. The main types of pesticides are the DuPont series of products in the United States. These types of pesticides have a good preventive effect against dark spots, black stars, and rust. (3) The bagging time is 20 days after flowering (when the young fruit is about large). (4) The order of bagging is first up and down, first inside and then outside. A tree or a garden or not, need to be unified, can not have some sets, and some not to reduce the number of spraying. (5) Operation method First put your hand into the bag to make the whole bag bulge, and then grab the handle with one hand and hold the bottom of the bag with one hand. Put the young fruit into the middle of the bag mouth, and then tighten the middle of the bag mouth to tighten the handle. Finally, Fasten the bag mouth with iron wire on the handle. After the suit is covered, the middle of the bag is raised by hand and the whole bag is bulged. The two bottom corners and the outlet air hole are opened, and the young fruit is suspended in the bag. (6) Bagging is generally taken out of the basket when the pears are harvested together with the fruit bags, and the bags are sorted and graded when they are to be packed to prevent bumping the fruit surface from the field to the fruit room. 3. Several issues that require attention are due to bagging operations under the tree, and it is inconvenient for tall tall trees to be bagged. Therefore, dwarf plastic trimming technology is needed to control the height of the entire tree crown within 2.5 meters. In addition, strict fruit thinning is required in order to increase the quality of control, and it is appropriate to pick it up late to make it sugar-rich and color-enhancing.