Rapeseed is a phosphorus-producing crop, especially in the flowering period, but from the utilization rate of phosphorus fertilizer and the effect of increasing yield, it is best to apply phosphorus in the seedling stage. Phosphorus can be reused in the rapeseed, so the earlier the absorption period, The higher the efficiency. Early application of phosphate fertilizer can increase the concentration of plant cell fluid, enhance cold resistance, resist frost damage, and ensure that rapeseed can be safely wintered. It can also promote early growth and increase oil content.
Therefore, the phosphate fertilizer should be applied early, and it is better to use it as a base fertilizer and seed fertilizer or as a fixed fat point when transplanting. If it is too late to apply phosphorus when planting, it should be applied before the 5-leaf stage. The earlier the effect, the better. Generally, 20-25 kg of superphosphate or calcium magnesium phosphate fertilizer per mu can be used. Soils with severe phosphorus deficiency or soil with more nitrogen fertilizer should be applied more appropriately. The root system of rapeseed has a special ability to absorb phosphorus. The phosphate fertilizer which is difficult to use in general crops has good fertilizer effect on rapeseed. In rapeseed soil, it can be used as a kind of phosphate fertilizer.
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Steel Grating
The steel grating be welded to products . Normally, hot galvanizing will be carried out after end welding process. The range PH6 to PH12.5, a stable protective film will be formed on the zinc surface, the hot dipped galvanized steel grating has good anti-corrosive property. Of course, the steel grating also have other surface treatment, for example painted and powder coated .
Steel grating can be cutting to different kinds of shape as per your special needs.
Steel grating including flat grating, 'I' shape grating, serrated grating.
In generally , the steel grating be used as stair tread, platform, fence, trench cover, ceiling, etc.
The advantage of steel grating :
firm welding
smooth surface
high strength
Steel Grating,Stainless Steel Grating,Galvanized Steel Grating,Hot Dipped Galvanized Steel Grating
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