It is very necessary for Liyuan to manage well in the summer and lay a solid foundation for the orchard's high capacity in the coming year. Today, the Agricultural Resources Net Xiaobian talks with everyone about the focus of management.
First, strengthen soil, fertilizer and water management
1, fertilization principle
(1) Rationally pursue chemical fertilizers. The weak trees are given more nitrogenous fertilizer and phosphorus and potassium fertilizers are used less frequently. The ratio of nitrogen, phosphorus and potash fertilizers in the golden mean tree is appropriate. Wangshu has to reuse potassium fertilizer and strictly control nitrogen fertilizer.
(2) The organic fertilizer must be applied early in the fall. It is required to apply basal fertilizer from August to September at the latest. The early basal fertilizer is an organic combination of root pruning and organic fertilizer, NPK fertilizer, which helps fruit trees accumulate nutrients, restore tree vigor, and promote flower bud differentiation.
2, foliar spray fertilizer
Adhere to once every 10 to 15 days, spraying urea 0.3% +0.3% potassium dihydrogen phosphate +0.3% boron fertilizer mixture 4 ~ 5 times.
3, use of control agent
In the vigorous growth period of fruit trees, especially when it grows wild, spray 2~3 times of fruit tree growth promoter PBO 200~250 times 2~3 times, from May to August, spray once a month.
4, rainy season flood prevention
Pay attention to drainage during the rainy season to prevent the occurrence of root rot in orchards.
5, a reasonable intercropping
Reasonably arrange the orchard's intercropping and interplanting crops to minimize losses, and it is forbidden to interplant high pole crops in pear orchards, and to plant short crops such as beans, vegetables, Chinese herbal medicines, and green manure.
Second, grasp fruit tree pruning, cultivate high yield tree
1. Branching branches: With emphasis on thinning branches, combined with pull branches, open the main branches, expand the canopy, increase the crown width, remove the dense shoots, eliminate the root litchi, pests, and branches. Branches, evacuation of pests and branches out of the orchard burned.
2. New shoot management: The new shoot management should be strengthened. Conditional orchards should take care of the new shoots in time and pick up the hearts. The competition branches should be removed one by one, and the twisted shoots should be one to facilitate nutrient accumulation and flower bud differentiation.
Third, pay attention to pest control
The disaster-placing orchards must also adhere to the prevention of pests and diseases, otherwise they will suffer endless trouble and use pollution-free pesticides, such as biological raw pesticides and mineral raw pesticides (lithium sulfur and Bordeaux mixture).
Commonly used non-hazardous pesticides: Bio-sourced pesticides such as garlic juice are applied to prevent dry rot and rot, 160 times of vinegar are used to prevent scale insects, and onion juices are effective in controlling red spiders, and are economical and environmentally friendly. The original mineral pesticides mainly include lime sulfur and Bordeaux mixture. Some fruit trees are sensitive to lime sulfur, and Bordeaux mixture can be used in large quantities.
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