1. The base fertilizer should be based on the organic fertilizer, phosphorus and potassium fertilizers, and the sandy soil should be supplemented with calcium, magnesium, phosphate, calcium phosphate, calcium nitrate and other calcium-containing fertilizers; the old vegetable garden and the heavy soil should be added with lime, every year. The amount of calcium applied per mu is 1.67 to 3.33 kg.
2, foliar fertilization plus 1 ~ 2 kg of superphosphate per 100 kg of water, stirring for half an hour, and then soak for a period of time, the above supernatant can be sprayed, also choose amino acid calcium, calcium humate, biological calcium fertilizer Etc., spraying at the peak of the absorption of calcium in vegetables.
3. Scientific application of nitrogen and potassium fertilizers has an antagonistic effect between ammonium ions and potassium ions and calcium ions. When the content of ammonium ions and potassium ions in the soil is too high, and the ratio of nitrogen to calcium is too high, the absorption of calcium can be inhibited. The amount of nitrogen and potassium fertilizer should be properly controlled, and scientific fertilization should be carried out to avoid the phenomenon of excessive nitrogen and potassium fertilizer.
4. Adding organic fertilizers Organic fertilizers are rich in organic matter and various nutrients required by crops. They are a complete fertilizer and have a unique effect on improving soil and fertility.
5, the appropriate amount of boron fertilizer to promote the amount of boron can promote the transport of carbohydrates into the roots, promote new roots, is conducive to the absorption of calcium, in the soil calcium and foliar spray can be mixed with the right amount of borax .
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Weight: 20g
Input voltage: 8-36V
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