Recent scientific research and production practices have consistently shown that the autumn planting of grapes is better than planting in spring. Where conditions are available, the grapes should be planted in the fall. In the management of planting and post-planting, attention should be paid to the following three points: 1. Choosing suitable plots and robust seedlings: The adaptability of the grapes to the soil is strong, sandy soil, sandy loam, loam, gravelly soil, light saline alkaline soil, etc. Can be planted, but the sandy loam is the most suitable, and sandy soil plots should be planted as much as possible. In order to improve the survival rate and early high yield of transplanting, on the basis of the selection of varieties with strong cold tolerance, we must select excellent seedlings with well-developed root system, abundant branch shoots, no pests and diseases, and no mechanical damage. Second, fine soil preparation and fertilization, improve the quality of planting: After the plot has been selected for ploughing and leveling, dig pits according to the scheduled line spacing. The upper diameter of the pit is 80 cm and the bottom diameter is 40 cm. Prune the roots and shoots of the seedlings before planting. The root system should be kept as much as possible. Apply 30-40 kg of organic fertilizer and 0.5 kg of urea to each pit. Spread evenly into the bottom of the pit, backfill with 10 cm thick soil, plant 1 grape seedling per pit, fill the soil once after compaction, and irrigate once after the water is poured. Level the pit. Third, to strengthen the post-planting management: 7 days after planting, the soil shall be cold-weathered and soiled at a suitable time. The thickness of the mound is generally about 30 centimeters in order to facilitate the security and security of the seedlings. After the frosts in the coming year, take the cold soil piles in due course and pour the water in proper amount. Before germination, cut 2-3 buds; after germination, touch the excess buds and pick up the tips; when the main shoots grow to 50 cm long , carry out topping. Later transferred to normal field management
Perforated Metal
Perforated Metal
The perforated metal including glavanized perforated metal, stainless steel perforated metal, painted perforated metal, aluminium perforated metal, etc .
Hole type: round, long circle, oval, square, rectangular, diamond, hexagon, cross-shaped and other special-shaped hole
The technology of perforated metal : stamping, leveling, cutting, bending, reel, welding, stereotypes, surface treatment.
In
generally , the perforated metal be used on mining, machinery,
food,sports supplies, kitchen supplies, silencer, decorative,
construction, electronics and transportation .
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