What should I pay attention to when bagging Yali pears?

What should I pay attention to when bagging Yali pears? Please help to introduce Yali pear bagging should pay attention to the following five points: (1) appropriate retention of fruit. Generally, 20 leaves are needed for each fruit to provide nutrition. (2) bagging immediately after fruit thinning in mid-late May in general northern fruit areas, and should be completed before the first ten days of June. (3) insecticides and fungicides should be carefully sprayed before bagging to control diseases and pests. After bagging, prevent the bite of bugs. (4) bagging trees with strong pre-fruiting stage and medium crown. There should be more sets of fruit in the middle and lower part of the crown, less or no fruit in the upper part and inner chamber of the crown, more sets of fruit in the lateral fruiting branch group and less fruit on the erect branch level on the back. (5) the mouth of the bag should be tied tightly to the base of the stalk (but should not hurt the stalk) to prevent it from being blown off by the wind or drilled by pests. The fruit can be picked together with the bag when the fruit is harvested, and the bag can be removed when it is boxed. Click for more pear tree planting techniques click to get more fruit planting techniques