The time and method of Apple bagging

Bagging time except for apple varieties which are prone to fruit rust, early and medium-maturing apple varieties are usually bagged about 30 days after falling flowers, and mid-late and late-maturing apple varieties are bagged 35-45 days after falling flowers. Early bagging, although the apple fruit surface is more smooth during harvest, but because the young fruit stalk is delicate, the fruit will fall into the bag in the windy weather; too late bagging, the apple fruit surface is relatively rough during harvest. At present, because most of the paper bags produced in China have not been treated with chemicals, fruit growers report that rotten fruit or Kang's pink scale often occur after bagging, so germicidal insecticides should be sprayed 2 days before bagging. The fruit surface of Golden Crown and Golden Dwarf apple is easy to rust, so it should be bagged immediately after fruit thinning, and the bagged fruit should choose the young fruit whose calyx is more erect and closed. Bagging method generally the entire apple orchard should be bagged to facilitate the arrangement of spraying. For an apple tree, bagging should cover the upper part of the tree first and then the lower part of the tree. The specific operation method of bagging: first put the hand into the bag to make the whole bag expand, then grasp the fruit handle in one hand, hold the paper bag in the other, put the young fruit into the middle of the bag, then fold the mouth of the bag from both sides to the middle handle, when all the mouth of the bag is folded to the handle, on the left side of the mouth of the bag, tear it down to the length of the wire card at the mouth of the bag, and finally reverse the wire card for 90 ℃, bend and fasten it on the handle. Be careful not to tie it to the fruit platform branch, and do not stick it too hard, so as to prevent the fruit stalk from getting stuck and affecting the growth of young fruit. After the bag is covered, hold up the middle of the bag with your hand so that the whole bag is bulged and the outlet air holes at the two bottom corners are opened. The young fruit is suspended in the bag and does not attach to the bag wall, which can prevent the blind Toona sinensis from rust and mildew caused by the pollution of thorn fruit, medicine, fungus and insect secretions.