Rational fertilization, fertilization in September-November, early application is better, strive to play fertilizer effect in the same year, fertilization is mainly based on farmyard manure, and manure or manure is applied. At the same time, pay attention to the application of NPK fertilizer or fruit tree fertilizer.
Deep ploughing, in order to keep the soil loose, deep ploughing should be carried out between the rows of trees, and the depth is generally 20 cm. When deep ploughing, the roots can be properly cut to play a role in accelerating new roots and promoting tree growth.
Remove defoliated weeds. After the leaves are finished, remove the fallen leaves in time, remove the weeds and burn them, or concentrate the defoliated weeds in the fertilizer mash to make organic fertilizers, save energy and save resources.
The trunk is painted white. Before the leaves lag behind the ground, in order to protect the trunk from freezing damage and prevent pests from spawning, the trunk can be painted white. The main ingredients of the whitening agent are quicklime, water, salt, vegetable oil and tree guards.
In winter irrigation, in order to maintain soil moisture, eliminate pests and diseases, and flood the whole garden before the soil is frozen.
After controlling pests and diseases, after the leaves are defoliated, the whole plant will spray a tree to protect the trees and eliminate some of the pests.
Guide Ring is a mechanical seal, also known as a guide ring. It is usually made of metal or plastic and used to support and position pistons or rods. Guide Ring has excellent wear resistance and corrosion resistance, which can effectively reduce leakage and friction, thereby extending equipment life. Guide Ring is widely used in the hydraulic, pneumatic, mechanical, and automotive industries as an important mechanical seal.
The classification of Guide Ring can be divided by material, structure, and purpose. According to material classification, Guide Rings are mainly divided into metal Guide Rings and plastic Guide Rings. Metal Guide Rings are usually made of metals such as copper, iron, and stainless steel, which have high strength, wear resistance, and high-temperature resistance; The plastic Guide Ring is usually made of polytetrafluoroethylene (PTFE), nylon, polyimide and other materials, with good corrosion resistance and low friction coefficient.
According to structural classification, Guide Rings are mainly divided into unidirectional Guide Rings and bidirectional Guide Rings. A unidirectional guide ring can only withstand pressure in one direction and is typically used in hydraulic and pneumatic systems; The bidirectional guide ring can withstand bidirectional pressure and is typically used in the mechanical and automotive industries.
According to usage classification, Guide Rings are mainly divided into piston Guide Rings and rod Guide Rings. The piston guide ring is usually used to support and position the piston, preventing friction and leakage between the piston and the cylinder liner; The rod guide ring is used to support and position the rod, preventing friction and leakage between the rod and the seal.
Wearing,Guide Ring,Guide Strip
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