Autumn pear tree management three note

"In order to win the harvest of pears next year, the current management is the key." Feng Leixiu, a pear expert at the Northwest Agriculture and Forestry University, hopes that the fruit farmers will strengthen management according to quality, accumulate nutrition, increase tree vigor, and cultivate strong trees to produce high-quality fruit for the next year. Gain a foundation for high yields.

Due to the pre-freezing disaster, this year's pear tree management was earlier than in previous years. In management, Professor Feng Yuexiu suggested to focus on the following tasks:

Autumn base fertilizer

Autumn basal fertilization is the key, and it is the top priority of management in the fall. Schiff base is usually completed within 8 to 9 months. It requires less nitrogen and more potassium. The method is to cooperate with deep-rolling ponds to apply organic fertilizers mainly composed of decomposed farmyard fertilizers. Each tree guarantees 50 to 100 kilograms, plus 1 to 3 kg of NPK fertilizer, and 1 to 3 borax. The tree can be supplemented with 3-4 sulphate zinc sulphate) and then watered in time to cover the soil. When the fertilizing ditch is excavated and the root pruning is performed, the fertilization ditch is 10 cm deeper than in previous years. A fertilizing ditch with a depth of 40 cm is dripped along the canopy, and the rough root below the small finger is cut off to solve the problem of tree balance. The best and only way is.

Thinning, pulling branches

Damaged harvest caused the tree's nutrient overgrowth. In autumn, pruning and pulling branches should be given special attention in the pruning of the whole plant. After the fruit is harvested, the insecticide should be applied in time to open the ditch, then the base fertilizer should be applied, followed by thinning and pulling. To eliminate stub branches, dense upright branches, cross branches, and branches, competing branches, we must completely eliminate thin and thin branches, root litchi and pests and branches, and then we should eliminate the invalid leafy branches and excessive fruiting branches and weak branches. Flower buds. After branching, the branches should be pulled immediately. Special attention should be paid to pulling the branches. The position and angle of the branches should be reasonable. The branches cannot be pulled.

Pest Control

Many pear farmers do not pay attention to post-harvest management of pear orchards. Pear trees are defoliated early and a phenomenon of “Little Spring in October” occurs, causing the pears to bloom in autumn and affecting the output of the following year. The main cause of the autumn flowering of pear trees is the prevention of pear black tree scab and pear wood lice and pear larvae after harvest. In the months from late August to early September, special attention should be paid to the prevention of pear scab.

Feng Yuexiu recommended that the fruit farmers in the autumn, according to the occurrence of pests, timely spraying, control of locusts, spider mites, pear caterpillars, pear borer, peach borer, and leaf curl insects.

In order to protect the trunk and reduce pests and continue parasitic damage, after scraping the skin, the dander should be collected and burned in time. The main branch should be promptly used lime 10 kg, salt 2 kg, sulfur powder 1 kg, animal or vegetable oil 0.1 kg, water 20 The whitening agent formulated in kilograms was brushed white, and Bordeaux's solution was fully sprayed to better achieve the effect of scraping the skin. At the same time, we must also do a good job in clearing the garden

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