1. The bagging work should be finished as soon as possible to ensure that it is completed around mid-June.
2. Do a good job in pest control. For the prevention and control of scab, ring worm, psyllids, pear net bugs, aphids, pear gall midges and other pests, you can use Emerald 10000 times and Baitai 2000 times (30 kg of water plus 1.5 grams of Emerald and 7.5 grams of Baitai). Thailand), control once every 10-15 days. For the control of thorn moths, diflubenzuron can be used 2000 times (30 kg of water plus 6.5 grams of medicine), once every 10-15 days. Black light lamps can be used to trap and kill the beetles. The black light lamps are turned on from 19:00 to 6:00 the next day. In May, the rain increases, the second and third generations of the pear gall midge are more harmful, and the damage rate of the new shoots is over 85%. It is recommended to use the new shoots. After the growth is stopped, spray the ground for control once to reduce the number of insect populations in the second year.
3. The tradition of pruning fruit trees is to emphasize winter pruning rather than summer pruning, which is actually unscientific. Fruit trees produce vigorously from June to August every year, the branches are airtight and disturb the shape of the tree, and consume a lot of nutrients from the tree. Pruning at this time can improve the canopy light, promote the maturity of the branches, suppress the strong and support the weak and balance the nutrient of the tree body, stabilize the tree vigor, promote the differentiation of flower buds, and increase the sweetness and color of the fruit.
4. Strictly control overgrown branches, especially for trees that are overgrown. The elongated branches that grow densely in the upper part of the crown should be thinned to improve the light conditions of the middle and lower branches and leaves. The elongated branches that are drawn from the middle and lower parts of the crown should be pulled to slow down the growth vigor and transfer nutrients to the fruit.
5. There is a lot of precipitation during the rainy season and the soil moisture is high, so the gullies should be cleaned in time. Although pear trees are more resistant to humidity, the soil is too humid and poor ventilation, and the root system is flooded, which will cause the plants to grow excessively due to excessive moisture. For pear orchards that are prone to water accumulation, the ditches should be cleaned regularly to lower the groundwater level and lead to deeper roots.
6. Balanced fertilization. Apply because of the tree, the tree will grow vigorously, and the number of new shoots will be large. If the amount of negative fruit is appropriate, apply 150-200 grams of compound fertilizer at a ratio of 15:15:15 to 15:15:15; if the tree is weak or the amount of negative fruit is large, it should be Apply about 30 days before the fruit matures. In order to increase the sweetness of pears, potassium fertilizer can be added, and the dosage is generally about 100 grams per plant.
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