Pear bagging can significantly improve the appearance quality of fruits, prevent diseases and insect pests, reduce pesticide residues, improve fruit flavor, and improve fruit quality. At the same time, it can also meet the market demand for high-end fruit. Bagging cultivation has become an important technology for producing high-quality and high-grade fruits.
1, bagging time. After 20-40 days after flowering, the bagging time is within 20mm of the fruit's transverse diameter. The fruit spot has not occurred or rarely occurred. Before bagging, the fruit should be carefully shredded according to the load requirements. The fruit is bagged and it ends in about 10 days. It is too early or too late to achieve the desired results.
2, insecticide before bagging sterilization. Pears after Xiehua combined with bagging medication must be sprayed with insecticidal bacteriostatic mixture of drugs 1-2 times, focusing on the surface of the fruit spray, killing fruit on the surface of the bacteria. Medicinal objects are mainly used for pear brown spot, black spot, ring spondylosis and Pygmy mosquitoes, P. edulis, P. edulis, etc. The agents can use triadimefon plus fungicides plus insecticides.
3, bagging must be strictly selected. Select fruit, long fruit, tight fruit, fruit, and fruit bagging. Weed out the weak fruits, branches and fruits, only 1 fruit per bag, 1 fruit and 1 bag, not 1 bag of double fruit.
4, bagging order and requirements. Under the tree after the first tree, on the contrary, easy to touch down, inside and outside the upper and lower left and right should be evenly distributed.
5, bagging method of operation. Bags are made of 20cm15cm black composite paper bags. Paper can not be used to paste paper bags, because the newspaper bags lead is too high, increasing the pollution of the fruit. First hand into the bag to make the whole bag bulge, then grab the handle in one hand, hold the bottom of the bag by hand, put the young fruit into the middle of the bag mouth, and then squeeze the bag mouth from the two sides to the middle handle; when all bags After the mouth folded to the handle, on the left side of the mouth of the bag, it was torn to the length of the iron wire of the bag mouth, and finally the wire card was reversed by 90 degrees, and the wire was wound tightly on the handle. Be careful not to tie it to the branch of the fruit bench, and don't use too much force to prevent it from affecting the growth. After the suit is finished, hold up the middle of the bottom of the bag with your hands and let the whole bag swell. The young fruit is hung in the bag and is not attached to the wall of the bag, which can prevent the growth of rust and mildew in the fruits of the stink bugs and the syrup and worm secretions.
6, attention after bagging pear bagging can not be separated from the good management of fertilizer management and pest control. After the bagging of the pear orchard fruit is completed, the fruit enlargement fertilizer is applied in a timely manner, mainly organic fertilizer. Do a good job in the prevention of pear ringworm disease and the prevention and treatment of pear net worms, application of appropriate period: early June. Control agent: 180% Dasheng 500 times liquid + thunderbolt kill 1000 times liquid + 0.2% potassium dihydrogen phosphate; 225% Sakamoto metalaxyl 1000 times liquid + 65% dexamethasone zinc 500 times liquid + conventional sucking mouthpiece kill Insecticides. An orchard with a severe pear rust occurs, and 15% triadimefon 1000 times solution is added to the above formulation.
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