Pears are vulnerable to freezing injury during planting. How to avoid frostbite?

Falling diseased branches, leaves, fruits, weeds, rotten fruits, etc. , and clean up the debris to long-distance incineration or deep burial, because the diseased branches and fruits must be carefully handled. The purpose is to keep the pear orchard clean and conducive to the healthy growth of pear trees. Pear orchards are very destructive because of pests and diseases, which has a great influence on the production of pear trees. In order to ensure the growth and quality improvement of pear trees next year, we must do a good job in integrated pest control, and carry out pest control work immediately after autumn harvest.

Before winter, we have a management of winter fertilizer and winter water. Before winter, dig deep into the soil and compost for the last time. Compost is mainly farmyard manure. After composting, water it once in winter. Spraying 350-400 times borax solution and 400 times urea solution at flowering stage can improve the seed setting rate. The orchard is pollinated by bees. Put 1 box of bees in each acre of pear orchard, and put them in the pear orchard 2-3 days before flowering. Don't sprinkle pesticides in the orchard pollinated by bees before flowering, so as not to kill bees.

About 5,000 ~ 7,000 kilograms of fully decomposed organic fertilizer, compost, manure and soil miscellaneous fertilizer can be used per mu. Compound fertilizer or compound fertilizer is 50-70kg per mu, and quick-acting nitrogen fertilizer such as urea is mixed with 5 5- 10/0kg. Dig a right ditch or a circular fertilization ditch. The following focuses on chemical control: spraying 80% poplar 2000 times solution +5% avermectin 8000 times solution+chlorpyrifos 1500 times solution can control pear psylla, pear stem bee, spider, scab and black spot.

Resistance to freezing injury. The method of fertilization mostly adopts the method of digging radial ditches. Generally, the ditch is 30-40 cm wide and 30-40 cm deep, and the length of the ditch should exceed the projected area of the tree. Watering in time after fertilization is beneficial to the absorption of nutrients by trees and the recovery of roots. Pouring frozen water can also enhance the frost resistance of pear trees. The weak central trunk is left in the middle, and the cut 1-2 branches are used as extension branches; For those with vigorous growth and no branches at the lower part, the original central extension branch can be leveled as the main branch, and the lower branch or new branch in the next year can replace the extension branch of the central trunk.