I. Soil and fertilizer management
1. Fertilizer management. From late May to early June, before the flower bud differentiation of pear trees, a special fertilizer for fruit trees supplemented by phosphorus and potassium and supplemented by nitrogen is applied. According to the age and the result of the tree, the plant is applied with 1-1.5 kg. Fill the water immediately. In combination with spraying, the tree is sprayed with 1-2 times of 0.3% amino acid compound fertilizer. In July, after the early maturing varieties were harvested, a quick-acting nitrogen fertilizer was applied immediately to supplement the lack of nutrients caused by the results. For mid-late maturing varieties, phosphorus and potassium fertilizers should be applied once at this time. In August, it is generally no longer fertilized. Only after the fruit is harvested, a quick-acting nitrogen fertilizer is applied. Note that after fertilization, water should be properly irrigated according to soil moisture.
2. Soil management. Summer temperatures are high, soil moisture is high, and weeds are prone to occur. Usually after the heavy rain or after the water, the soil should be loosened in time. For conditional orchards, the orchard can be covered with grass. After the wheat is harvested, the wheat trees are used to cover the rows of trees or rows of trees, and the grass is covered with 1000-1500 kg per acre and the grass is 20 cm thick. Pay attention to the soil after covering the grass to prevent fire.
Second, prevention of root rot
The roots are irrigated with fungicides and roots, and the soil is filled or furrowed under the canopy. It can be re-irrigated once a month, and it can also prevent leaf yellowing, focal edge and lobular disease caused by root rot.
Third, control the new shoots
When the fruit trees appear in the middle and late July, the blunt blade can be cut in the smooth part of the trunk (nen skin) with a blunt cut of about 1-2 mm, deep into the xylem, and brushed with the brush to promote the flower king No. 2 cream. So that the medicine can fully enter the gap of the cutting mouth. The second time is used in the same way at another interval of 20-30 days.
Fourth, pruning and adjusting the tree potential
On the back, the branches are twisted, the dense branches are removed, and the temporary long branches are softened. The new branch of pear is more brittle, and it is strictly prevented from being broken during treatment. The softening of the branch is smooth and continuous, and the angle is as flat as possible. Appropriate amount of branching branches, local over-density branches, ventilation and light transmission; 1-2 year old erect branches from the base twist to smooth the growth potential, promote flower bud formation. Do not separate the xylem from the phloem. The grape shoots are topped and the sub-tips below the ear are removed. The upper and lower tips of the ears are 1 to 2 leaves, and the tops of the branches are left with 1 to 2 pairs of tips. Each time 3 to 6 leaves are topped; the new vines are tied in time. Evenly distributed on the rack surface; remove the tendrils in time to save nutrients. As a result, the tree or branch with a large amount pays attention to the top branch and the hanging branch, and the anti-skeleton branch is crushed and wounded. The wound caused by pruning should be applied to the wounded anti-corrosion film in time to protect the wound from healing tissue growth and prevent the pathogen from infecting the wound.
Fifth, prevent fruit cracking
Before flowering, during the young fruit stage and the expansion period, the strong fruit tingling can be activated once, which can activate the plant ecological growth positive energy, broaden the plant conduit path, enhance the water absorption and fertilizer absorption of the plant, increase the fruit yield and quality, reduce the fruit drop rate, and reduce The incidence of cracked fruit, stiff fruit, and deformed fruit.
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