Silicon calcium and magnesium fertilizer is a by-product of the production of alumina - red mud, containing 20.58% of bismuth-soluble silica, 40.95% of calcium dioxide, 19.0% of magnesium oxide, 2.4% of potassium oxide and 0.68% of iron oxide. Silicon calcium thickens the cell wall, creating a mechanical barrier that prevents fungal infestation and larval drilling. This has a good effect on rejuvenating the tree and improving the disease resistance of the tree. According to the Shandong Institute of Fruit Research, the gold crown or Guoguang apple strain applied 5 kg of silicon calcium and magnesium fertilizer, the calcium content of the leaves increased by 8.2%-34.5%, and the silicon content increased by 5.7%-35.4%. After 4 years of continuous application, the incidence of rot disease decreased by 11%-22% compared with the control; for 3 consecutive years, the average growth of dry week was 13.2%-19.2% higher than the control. It also has certain effects on increasing fruit firmness, improving fruit quality and improving storability. The fruit firmness is 1.3%-5.7% higher than the control, the soluble solid content is increased by 27%-6.4%, and the golden fruit is stored at the end of December. Compared with the control, it decreased by 15.9%-45.6%.
Silicon calcium magnesium fertilizer is an alkaline mash fertilizer with a pH of 10-12, so it should be applied in slightly acidic and acidic soils. Late autumn or early spring, mixed with the base fertilizer is better.
Silicon calcium magnesium fertilizer is an alkaline mash fertilizer with a pH of 10-12, so it should be applied in slightly acidic and acidic soils. Late autumn or early spring, mixed with the base fertilizer is better.
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