It is very necessary for the pear orchard to do a good job in summer management, and lay a solid foundation for the fruit orchard production capacity in the coming year. Today, the editor of Agricultural Resources Network will talk to you about the key points of management.
1. Strengthen soil, fertilizer and water management
1. The principle of fertilization
â‘´ Reasonable topdressing of chemical fertilizers. Use more nitrogen fertilizers for weak trees, and use less phosphorus and potassium fertilizers appropriately. The proportion of nitrogen, phosphorus, and potassium fertilizers for moderate trees is appropriate. Potassium fertilizers should be re-applied for prosperous trees and nitrogen fertilizers should be strictly controlled.
⑵ Early application of organic fertilizer must be insisted on in autumn. It is required to apply basal fertilizer before August to September at the latest. Early application of basal fertilizer is an organic combination of root pruning and increased application of organic fertilizers and nitrogen, phosphorus and potassium fertilizers, which is beneficial to the accumulation of nutrients for fruit trees, restoration of tree vigor, and promotion of flower bud differentiation.
2. Foliar spray fertilizer
Insist on once every 10 to 15 days, spray urea 0.3% + 0.3% potassium dihydrogen phosphate + 0.3% boron fertilizer mixture 4 to 5 times.
3. Use of control agents
In the period of vigorous growth of fruit trees, especially when it grows wildly, spray the fruit tree growth promoter PBO 200~250 times 2~3 times, and spray once a month from May to August.
4. Waterlogging prevention in rainy season
Pay attention to drainage during the rainy season to avoid root rot epidemic caused by the accumulation of water in the orchard.
5. Reasonable inter-production
Reasonably arrange the interplanting and interplanting of crops in the orchard to minimize losses. It is strictly forbidden to interplant high-stalk crops in the pear orchard. Short crops such as beans, vegetables, Chinese medicinal materials, and green manures are suitable.
2. Do a good job in shaping and pruning fruit trees, and cultivate high-yield tree shapes
1. Pulling branches and thinning branches: focus on thinning branches, combined with branching, opening the main branch angle, expanding the crown, increasing the crown width, appropriately removing dense branches, and resolutely removing roots, tillers, pests and dead branches. Branches, the removed branches of disease and insects were taken out of the orchard and burned.
2. New shoot management: New shoot management should be strengthened, and the orchard with conditions should promptly topping the new shoots, remove one competitive branch and twist one, to facilitate nutrient accumulation and flower bud differentiation.
3. Pay attention to pest control
The disaster-stricken orchard must also adhere to the prevention and control of plant diseases and insect pests, otherwise there will be endless troubles, and the correct use of pollution-free pesticides, such as biological raw pesticides and mineral raw pesticides (lime sulfur mixture, Bordeaux mixture).
Commonly used harmless pesticides: Biological pesticides such as garlic juice can prevent dry rot and rot disease, 160 times edible vinegar can prevent scale insects, and onion juice can prevent spider mites, economical and environmentally friendly. The original mineral pesticides mainly include lime-sulfur mixture and Bordeaux mixture. Some fruit trees are sensitive to lime-sulfur mixture. Generally, a large amount of Bordeaux mixture can be used.
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