Spring corn needs high yield and fertilization

"Wide", that is, the extensive application of organic fertilizer spring corn is a high-yield crop, and its output is closely related to the level of soil fertility. In the high-yield and efficient fertilization measures of spring corn, the first is to widely apply organic fertilizer to improve soil fertility, generally The input amount of organic fertilizer is 200 ~ 300 kg.

"Steady", that is to say that the stable application of nitrogen fertilizer spring maize should apply a good base fertilizer, and adjust the amount of top dressing. In high-yield fields with yields above 500 kg, nitrogen application per mu should be stabilized at 9-12 kg; for medium-yield fields with yield 300-500 kg, nitrogen application per mu should be stabilized at 7-10 kg; low-yield fields with yield less than 300 kg , Nitrogen application per acre should be stable at 6 ~ 8 kg. At the same time, rationally adjust the application period and method to improve the effect of nitrogen fertilizer utilization.

"Control", that is, the application of phosphate fertilizers At present, the effectiveness of phosphate fertilizers has been generally recognized by people, but the application of phosphate fertilizers should be based on reasonable determination and control of the amount of available phosphorus in the soil. In the fields with high, medium and low yields, the appropriate amount of phosphate fertilizer applied per acre should be controlled within the range of 7 kg, 6 kg and 5 kg, respectively. Spring corn phosphate fertilizer is generally applied as a base fertilizer.

"Increase", that is, increasing the application of potassium fertilizer. As the available potassium in the soil decreases year by year, the area of ​​potassium deficiency continues to expand. In order to meet the demand for potassium in corn growth, it must be fully applied. The suitable potassium fertilizer application rate for high-yield fields is about 8 kg per mu, about 7 kg for medium-yield fields, and about 6 kg for low-yield fields. The application ratio of nitrogen, phosphorus, and potassium should be 1: 0.5: 0.6.

"Replenishment", that is, supplementary application of micro-fertilizers due to the improvement of corn varieties, farming system reform and changes in fertilization structure, makes the symptoms of trace element deficiency in the soil become more and more obvious, especially the symptoms of zinc deficiency in corn have appeared in large areas. Supplementary application of corn zinc fertilizer can be applied in corn seed soaking and coating. It can also be generally applied to 1 to 2 kg of zinc sulfate during corn seeding or top dressing at the seedling stage. It can also be used in corn special fertilizer or corn seedling leaves Spraying on the surface, adding zinc fertilizer to the fertilizer.

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Vitamins & Minerals

Vitamin is a kind of trace organic substance that humans and animals must obtain from food in order to maintain normal physiological functions. It plays an important role in the process of human growth, metabolism and development. Vitamins in the body neither participate in the formation of human cells, nor provide energy for the body.

Scientific studies have found that at least 30 different compounds are considered "Vitamins", of which more than 20 vitamins are known to be necessary for biological health.

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