Summer is the season for the vigorous growth of the Yali pear tree. This period is not only the rapid expansion of the fruit, but also the formation of flower buds. The management of this period is of utmost importance. This is not only related to the bumpy harvest of pear fruit this year, but also related to the next year's pear blossoms. The quantity and quality. Focus on 3 things:
First, fertilizer and water management Based on the fertilization in autumn and winter, in late May to mid-month of flower bud differentiation before applying a flat nitrogen, low phosphorus, high potassium fruit tree fertilizer, timely watering after fertilization. The amount of fertilization should be based on the age of the tree, the vigor and strength of the tree vigor, and the number of results. The optimum amount of fertilizer should be determined on the basis of 0.5 kg of pure nitrogen, 0.25 kg of pure phosphorus, and 0.5 kg of pure potassium per 100 kg of fruit produced. Combined with spraying, the leaves were sprayed with 1% urea solution, 0.3% amino acid compound fertilizer solution, and 0.2% potassium dihydrogen phosphate solution to supplement the nutrient of the tree and enhance the photosynthetic capacity of the leaves. In the summer, when the rainy season begins, the amount of rainwater increases. It is necessary to properly apply water according to soil moisture. Watering should be performed with small water and prevent flooding. After the heavy rain, we must promptly rule out the accumulation of water in the garden and prevent the roots from decaying due to rain soaking.
2. Pest control 1. Pear black spot disease: always check regularly, timely discover and completely remove diseased leaves and diseased branches, eradicate the source of the disease, and timely carry out chemical control according to the disease condition. 40% DuPont Fuxing 10000 times liquid or 10% phenyl ether can be used. Methiconazole 3000 times. 2. Ringworm disease: available Hanbang 50% carbendazim 2000 times or 68.75% DuPont Epro 1200-1500 times. 3. Tenebrio: Available 10% red storm (imidacloprid) 1500 times or 20% acetamiprid 3000 times + 4.5% beta-cypermethrin 1500 times. 4. pear wood hibiscus: available 2.0% arviferin 3000 times + 4.5% beta cypermethrin 1500 times. 5. Cornell mealworms: 40% chlorpyrifos can be used 1500-2000 times + booster 1000 times, or 205 Konzerthai 2,000 times. 6. Locust worms: Diflubenzuron III 1000-1500 times + 4.5% beta cypermethrin 1000-1500 times or 1% Methosite 1800 times.
3. Summer pruning Summer pruning is a supplement to winter pruning. Doing a good job in summer pruning will help control the production of tree vigor, promote flowering, and improve ventilation and light transmission. The tree with normal results must be strictly controlled on the branches and dense branches of the stems, and comprehensively use methods such as topping, folding, thinning, pulling branches, etc., to adjust the tree potential and angle of the stem branches, and remove the upright branches and cross branches in time. Disease and disease branches.
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