Increase phosphorus and potassium fertilizer. Phosphorus can promote rape root development and enhance rape resistance; potassium can improve rape cold resistance, disease resistance, and lodging resistance. Therefore, in the process of topdressing, the amount of nitrogen fertilizer should be appropriately controlled or reduced to prevent the plants from becoming tender and juicy, and their cold resistance will be poor. 10-15 kg of calcium per acre, 5-8 kg of potassium sulfate, and 5-7 kg of urea.
Reapply organic fertilizer. Adding bio-organic fertilizer between the rows of rapeseed can increase the ground temperature by 2 ° C-3 ° C, which can protect against cold and warmth, and can also play the role of winter fertilizer and spring.
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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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