Postharvest management of pear trees

1. After fruit collection, all kinds of weeds, dead branches and fallen leaves in the garden must be removed in time, and the shady branches inside the crown must be cut off, and the disease and insect branches, weak branches, dry and withered branches, overlapping branches and over-dense branches outside the crown must be concentrated and burned outside the garden to reduce the source of diseases and insect pests.

Second, after the application of postharvest fertilizer to clear the garden and pruning, the postharvest fertilizer should be applied in time, mainly high-quality organic fertilizer and nitrogen, phosphorus and potassium compound fertilizer. For fruit trees more than 10 years old, each tree should be retted to produce 40 kilograms of rotten human, animal and poultry manure. Nitrogen, phosphorus and potassium compound fertilizer 2kg, around the crown dripping line, dig a ring ditch of 25cm and 30cm in depth and width, remove the fertilizer evenly in the ditch, and return to the soil to cover it.

Third, after clearing the garden for pest control and pruning, spray 0.8-1 Baume of stone-sulfur mixture aqueous solution inside and outside the crown to eliminate all kinds of diseases and pests adsorbed on the branches and leaves. During the period of shoot emergence, the mixture of trichlorfon, dichlorvos and thiophanate was sprayed once to eliminate all kinds of diseases and pests harmful to the new shoot so as to protect the young shoot.

Fourth, foliar topdressing pear trees after fruit harvest, must be foliar spraying 0.1% magnesium sulfate, 0.2% urea, 0.3% potassium dihydrogen phosphate, 1000 times triacontanol mixture, or 800x fruit tree special type of Gaomei organic humic acid solution, spray once every 7 to 10 days, spray all leaves evenly, in order to quickly improve the nutritional level of leaves, promote tree potential, and be beneficial to the emergence of fruiting mother branches.

5. after cultivating soil to cover the application of postharvest fertilizer, retting rotten garbage fertilizer, burning soil, pond mud, soil miscellaneous fertilizer, etc., must be applied on the topsoil under the crown in time, each tree is cultivated 150kg 200kg, from 30cm to 40cm outside the crown drip line to 40cm to 50cm from the trunk, and then cover the tree plate with straw or other weeds, the grass is 3cm thick and 5cm thick, in order to reduce water loss.