Winter tube is conducive to blossom and fruiting in the coming year. Key points of management of winter pear orchard

Autumn and winter is an important period of dormancy of fallen leaves of pear trees, and the strong management of pear orchards at this time is beneficial to the growth, flowering and fruiting of pear trees in the following year.

Pear winter shears

First, rational fertilization: before the end of November, the pear orchard applied autumn fertilizer once, accounting for more than 30% of the total amount of fertilizer applied in the whole year, mainly rotten cruller fertilizer, residue fertilizer, compost, human and animal manure and other organic fertilizer. The method is as follows: at the crown dripping line of adult pear trees, dig 1-2 annular fertilization nests of about 60cm in length and 25cm in depth and width, apply 30-40 kg water fertilizer to mature human livestock and poultry in each pear tree, add 1.5 kg mature cruller fertilizer (or 10-20 kg rotten residue fertilizer, retting fertilizer, etc.), and mix it. The young trees were fertilized by half or 1 pound. After fertilization, the young trees returned to the soil to cover their nests.

Second, ploughing and weeding: combine autumn fertilizer to root out weeds in pear orchards and bury them deep in fertilization nests. And then. The pear orchard was deeply ploughed, shallow ploughed under the canopy, 20-30cm deep between rows, and the plot was collected and ditched to loosen the soil and eliminate overwintering eggs (cocoons).

Third, arrangement and pruning: for the young pear orchard planted for 1-2 years, on the basis of the summer branch in the same year, the four branches of the cultivated 2muri were pulled, supported and suspended to maintain the opening degree of 60-70cm, so as to ease the tree potential and form a dwarfing crown; for the adult fruiting tree, pruning, truncation, renewal and retrenchment were adopted to make the crown ventilated and transparent, with clear levels, and to achieve the purpose of internal and external results.

Fourth, pest control: comprehensive measures should be taken to control overwintering diseases and insect pests in winter after pear leaves fall.

1. Remove the dead branches and fallen leaves from the pear orchard and its surroundings, cut off the branches of diseases and insect pests, scrape off the warped bark of the trunk, and burn them or bury them deeply.

two。 Before the beginning of winter, use millet grass or mixed apple to make two small grass handles and place them at the branches of the pear tree to lure pests to the grass handle to overwinter. at the beginning of spring, all the grass handles will be centrally burned, and a large number of overwintering diseases and pests can be eliminated.

3. Give the medicine and brush it white. After the pear tree leaves fall to before sprouting, the pear orchard sprays 2Mel 3 Baumetu stone sulfur mixture 1Mel twice and brushes the tree trunk with the residue. The whitening agent can also be prepared by ourselves: ① lime 4kg, stone sulfur mixture 3kg, diesel (kerosene) 0.5kg, hot water 50kg. Preparation method: first dissolve the lime block into a pulp with warm water, then add stone-sulfur mixture, and fully stir; ② lime 5kg, salt 0.5kg, 40% Fuxiao arsenic wettable powder 100g, diesel (engine oil) 0.5kg, 60 ℃ warm water 50kg. Preparation method: first dissolve the lime block into lime emulsion with warm water, then add salt, oil, pesticide, etc., and mix well.