1, base fertilizer
After the apples are harvested, the base fertilizer should be applied immediately. Generally, in the middle and late October, the ditch method is adopted. The ditch depth is 0.5-0.6 m, 3500-3900 kg of organic fertilizer per mu, mixed with calcium and magnesium phosphate 100 kg, mixed with soil. After the application, this period of application of the base fertilizer has the following benefits:
First, the soil temperature of the main roots of apple is more suitable, the root growth is large, and the absorption function is also more lively. After fertilization, it is beneficial to root absorption. Second, fertilization is beneficial to improve the photosynthetic efficiency of leaves and increase the accumulation of carbohydrates. Third, the application of organic fertilizer in autumn has sufficient time for roots to be absorbed and operated, and stored in the tree. Therefore, the application of fertilizer in autumn is an important part of the apple garden fertilization system and the basis for fertilization throughout the year.
2, top dressing
In the spring and mid-March, the topdressing was once in the first half of the year. The bio-organic fertilizer was 100 kg, the silicon fertilizer was 40 kg, the “Hongjie†brand fruit tree special fertilizer 40 kg, and the potassium sulfate 30 kg, fertilized by the radiation ditch method, and the fertilizer was mixed and applied. In mid-June, the topdressing was carried out in mid-June. The special fertilizer of “Hongjie†brand fruit tree was 30 kg, and the potassium sulfate was 20 kg. Fertilization was carried out by radiant ditch method, and the soil was mixed and applied, and water was poured after each fertilization.
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Other Constructions SS Wire Rope
Wire rope quality judgment:
1. Specific gravity. The diameter of the wire rope is the same, the heavier the specific gravity, the better the quality of the wire rope.
2. Steel wire rope core. The stronger the core of the wire rope, the heavier the specific gravity, the better the support for the outer strand of the wire rope, and the better the quality of the wire rope.
3. Materials. The material is the steel grade and strength. The higher the steel grade, the better the quality of the wire rope with higher strength.
4. After the rope is cut, the slightly loose quality is good, and the quality of the wire rope with a relatively long lay length is better than that with a short lay length.
5. The anti-corrosion ability of 316 Stainless Steel Wire Rope is stronger than that of 306 stainless steel wire rope, and the anti-corrosion ability of 306 is stronger than that of hot-dip galvanized steel wire rope. The quality of hot-dip galvanized steel wire rope is better than that of electro-galvanized steel wire rope; the quality of nylon plastic-Coated Steel Wire Rope is stronger than that of PE plastic-coated steel wire rope.
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