Fall and winter season is an important period for the deciduous dormancy of pear trees. The field management of autumn and winter in pear gardens will be strengthened, which will benefit the growth and flowering of pear trees in the following year.
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1.Appropriate fertilization Before the end of November, apply a fall fertilizer once to the pear orchard. The fertilization amount should account for more than 30% of the total amount of fertilization for the whole year, with the decomposed oil cake (blight), slag, manure, and livestock and poultry manure etc. Organic fertilizer dominates. The method is: in the canopy dripping line of mature pear trees, dig 1 to 2 circular fertilization ditch with a length of about 60 cm, a depth of 25 cm and a width of 25 cm, and apply 30 to 40 kg of embroidered livestock and poultry for each plant. Oil cake (blight) fertilizer 1 ~ 1.5 kg (or decomposed slag, manure and other 10 to 20 kg) mix. The saplings were fertilized in half or 1/4 of the amount, and the soil was covered after fertilization.
2. Weeding and weeding in addition to weeds in pear orchards are deeply buried in fertilization trenches. Then, plow deep into the pear orchard, plow under the canopy, and plunge between the rows by 20 to 30 centimeters to loosen the soil and eliminate the overwintering eggs.
3. Pruning and pruning For young pear gardens planted for 1 to 2 years, on the basis of pulling branches in the summer of that year, the branches, branching branches, hanging branches and other methods are adopted for the 2 to 4 branches that have been cultivated. It maintains an opening angle of 60 to 70 degrees to ease tree vigor; a dwarf tree canopy is formed; and the tree of adult trees is meticulously cut, shortened, and renewed and retracted. Obviously, the purpose of achieving internal and external results.
4. Pest control In the winter after the deciduous pear trees, comprehensive measures are taken to prevent overwintering pests and diseases. The first is to remove the litter near the pear orchard, cut off the branches of the pests, scrape the trunk of the trunk, and burn them centrally or deeply. Second, before the winter, use grass or weeds to make one or two grassy straws. Place pears at the tiller to lure the pests to overwinter on the grass handles. When the spring begins, all the grasses will be burnt and destroyed, and a large number of overwintering pests will be eliminated. Before defoliating pear trees, before sprouting, pear orchards should be sprayed with 2 to 3 Baume degrees of lime sulfur for 1 or 2 times, and the used dregs should be brushed on white trunks. The following two formulas can also be used to formulate whitening agents: 1) 4 kg of lime, 3 kg of lime sulfur, 0.5 kg of diesel or kerosene, and 50 kg of hot water. The preparation method is as follows: first put the lime block into warm water and dissolve into slurry, and then add lime sulfur, diesel oil or kerosene, fully stir and serve; (2) quick lime 5 kg, salt 0.5 kg, 40% Formamide arsenic wettable powder 100 Grams, 0.5 kg of diesel (or oil), 50 kg of warm water at 60°C. The preparation method is: first put the lime block into warm and hot water and melt it into lime milk (pulp), then add salt, oil, and pesticide to fully mix and serve.