The cultivating and weeding is the time when the spring buds of pear trees sprout, which is also the time when weeds break ground. In order to prevent weeds and fruit trees from competing for nutrients, weeding and weeding before fertilization, weeding according to the growth rule of pear roots is conducive to the growth of new roots, and weeding can be carried out by manual weeding or chemical weeding.
Fertilize according to the tree fertilization and weeding. The saplings are best used diligently and thinly, using decomposing human and animal manure, urea, etc., and digging the holes to apply the soil; the result tree is germinated at the end of February, the flower fertilizer is applied in mid-March, and the young fruit is applied in mid-April. Each time with manure and manure, 0.5 kg of urea is added for each pick; 4 trees are planted in the initial results; 2 trees are planted in the fruiting period, 1 plant is applied to the tree, and the canopy is applied to the canopy at the canopy, and the soil is reapplied after application. . In the case of spring drought, watering should be done in time to ensure that sprouts, shoots, flowers and young fruit are swollen, and it is necessary to clean the drainage ditch in order to prevent root swelling.
The time for thinning flowers and thinning flowers is best carried out before flowering buds to flowering, the sooner the better. Leave an interval of 25-30 cm. After inflorescence separation, leave 3 flowers in the base of each inflorescence. Try to choose the inflorescences on both sides of the branches. The amount of inflorescence left may be slightly larger than the amount of fruit remaining.
The fruit thinning is carried out after falling flowers, and the amount of fruit retained depends on the variety, age, and tree potential. Each inflorescence is sparse into a single fruit, leaving the fruit shape positive, the fruit stem length, no damage and pests and diseases, try to choose the base 2, 3 order fruit. As a result, the middle and lower parts of the branches were mostly left, and the branches were less left; the side fruits were mostly left, and the lower fruits were left less.
Scientific pollination of pear trees directly affects the rate and yield of pears. Pollination can be carried out by pollination and artificially assisted pollination.
Bee pollination, generally 5-7 days before flowering, the bee colony is placed in the pear orchard, especially the densely planted pear orchard works best; artificially assisted pollination, early pollination of flowers should be collected, and then the pollen is taken out and taken with a brush or paper stick A small amount of pollen is taught. Pollination can be started at the initial flowering stage, and 1-2 flowers are best at the base of each inflorescence, and the entire flowering period is 2-3 times.
Pest control Pear trees are common and have serious hazards such as black spot disease, rust disease, ring disease, rot disease, black spot disease, etc., which can lead to weak growth of pear trees, delayed results, reduced yield, and low fruit yield. .
The specific control measures are as follows: before the germination of the fruit trees, spraying 2-3 degrees of stone sulphur mixture once, can prevent the wintering of Pear mites, scale insects and other pests and diseases; March flower buds bloom, with 50% carbendazim 500 times liquid spray, prevention Pear solid insects, pears and other food buds and insect pests and black spots, black spots, brown spots and other diseases; at the end of March, with 65% sensitized zinc 500 times liquid spray, to prevent pear bees and cure flower rot; 4 In the early fruiting period of the month, spray 500 times of powder rust and 2,000 times of insects to prevent pear rust, pear hibiscus, pear stalk, pear and so on.
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