2. Fertilizer and water management In addition to applying sufficient fertilizer when planting, fertilizer should also be applied in the middle and late stages, especially in the early stage. In order to make pear trees grow rapidly, basic fertilizer is usually applied to promote the growth of pear trees. After and before flowering, compound fertilizer should be applied to supplement the nutrients needed for plant growth, while in the peak period of fruit, potassium fertilizer and a small amount of phosphorus and potassium fertilizer should be applied to make the fruit grow rapidly. Pear trees are drought-tolerant. Generally, they can be watered once after fertilization, without planting land.
3, pruning, pollination In order to better make plants grow strong, bear more fruits, and increase yield, plastic pruning is necessary. When the seedlings grow to 70-80 cm, they need pruning and shaping, pruning buds to promote branching and accelerate trunk formation. When the tree types are the same, it is necessary to cut off the branches that are too dense and erect, such as long branches, blind branches, pests and diseases, and invalid branches, and leave more auxiliary branches. In addition, in order to ensure fruit yield, in addition to weight gain at flowering stage, artificial pollination is also needed to ensure a good harvest.
4. Pest control is one of the reasons that damage the yield of pear trees. The main diseases and insect pests of pear trees are downy mildew, ring rot and rust. These diseases and insect pests damage the leaves and fruits of the plant, making the plant unable to grow and develop normally, resulting in less fruit, and even leading to the death of the plant. The control method is a combination of agricultural and animal husbandry control and chemical control, which solves the disinfection problem of seedlings and soil before planting and is controlled by spraying chemicals.
The main pests and diseases of pear trees are budding insects, pear psylla, pear moth and pear stem bee. Inhaling young branches or biting the position of plants will endanger the growth and production limit of plants, and the two methods should be combined to prevent them. Weeds around plants should be removed before winter to reduce the source of insects, and drugs should be sprayed when the disease occurs.
5. The management method of the hundred fruits is to comb the fruits 10 day after hanging the fruits. According to the plant type and the regulation of "crown with fruit", the appropriate carrying capacity should be maintained. Generally, Zaojinsu and Zaosu pears are left every 25cm 1 fruit; Zaojinxiang leaves 1 fruit every 20cm. Fruit bagging. Thank you for spending 30 days bagging. Spraying bactericide and insecticide before bagging. When bagging, the bag mouth is sealed tightly, the fruit is suspended in the air in the bag, and the air outlet at the bottom of the bag extends out.
Three-year-old trees gradually come to the conclusion that the number of trees is above 9 1%, the initial conclusion is mainly axillary bud conclusion, and then the short fruiting branch conclusion gradually prevails. The yield of 3-year-old trees is 666.7m2, 1328kg, that of 5-year-old trees is 4 130kg, and the average high-quality fruit rate is 93%.