Foliar fertilizer application should be reasonably guarded against misleading
In the agricultural production process, when fertilizing crops, most of them use the method of cultivating deep fertilizer in the soil, so that the crops absorb fertilizer through the roots, provide nutrition, and promote high yield of crops. But often due to tight seasons, dry climate or rain, base fertilizer or The topdressing is not applied in time, which makes the crop yield unsatisfactory. In agricultural production measures, the method of root dressing is often used to make up.
Top dressing is the method of spraying fertilizer or organic liquid fertilizer on the stems and leaves of crops. This is because all the fertilizers that can be absorbed by the roots can be absorbed through the leaves. The absorption process is generally divided into three stages. One can directly enter the mesophyll cells through the pores of the leaves; the second can absorb nutrients through the surface of the plasma membrane; the third is to enter the crop cells through the process of metabolic energy transfer. The role of top dressing is to timely supplement crop nutrition and promote nutrient balance. Enhance the activity of the enzyme and use the fertilizer efficiently. The effect of top dressing is: first, the dosage is small, the effect is quick; the second is to increase the yield and improve the quality; the third is convenient, safe, non-toxic and odor-free; cost.
Spraying fertilizer outside the roots, some apply a large number of elements; some apply trace elements; some apply organic liquid fertilizer; some use soil amendments to prepare liquid fertilizer; some apply fertilizer and liquid. Although the types of fertilizer applied outside the roots are Different, but will supplement and improve nutrition from different aspects, which is conducive to the growth and development of crops. Nowadays, there are many fertilizers used by different enterprises and manufacturers in the market for external spraying. Most of them are feasible as a supplementary measure to increase crop yield. However, some dealers have increased the rate of increase to 20~30%, or even higher, which is obviously unrealistic. Some of them are not credible to expand their functions. The majority of consumers must not be fooled. Being cheated.
In order to reasonably and effectively carry out foliar spray application on crops, the following points must be paid attention to in production measures and application techniques: 1. Spraying fertilizer outside the root is one of the effective techniques for increasing yield, but it cannot replace soil fertilization. Because a large amount of fertilizer must be directly applied to the soil layer. When the crop lacks certain elements or the root system of the crop is gradually declining, the effect of spraying fertilizer on the root is better. Second, the relationship between the external fertilizer and the climate is extremely high. Large. First, when the temperature is too high, it is not suitable for application. After 4:00 pm, the application is not obvious. When the weather is dry, the effect is not significant. When the soil is moderate, the effect is good. Third, the windy weather should not be applied. Fourth, the rainfall immediately after application. After the rain, it should be re-sprayed. Third, it is necessary to distinguish the types of fertilizers. For example, the concentration of urea spray is 1%~2%, the concentration of potassium dihydrogen phosphate is 0.2~0.3%, and the concentration of quick-learn boron is 0.1~. 0.2%, the concentration of active liquid fertilizer of Huimanfeng or Zhuangfuxing is generally 1:500 times, the concentration of organic coordination fertilizer for controllable crop pests and diseases is 1:300 times, the concentration of ammonium molybdate is 0.02~0.05%, sulfuric acid The concentration of zinc is 0.05~0.2%. If it exceeds the concentration, it will cause fat damage. In order to save labor, these
Top dressing is the method of spraying fertilizer or organic liquid fertilizer on the stems and leaves of crops. This is because all the fertilizers that can be absorbed by the roots can be absorbed through the leaves. The absorption process is generally divided into three stages. One can directly enter the mesophyll cells through the pores of the leaves; the second can absorb nutrients through the surface of the plasma membrane; the third is to enter the crop cells through the process of metabolic energy transfer. The role of top dressing is to timely supplement crop nutrition and promote nutrient balance. Enhance the activity of the enzyme and use the fertilizer efficiently. The effect of top dressing is: first, the dosage is small, the effect is quick; the second is to increase the yield and improve the quality; the third is convenient, safe, non-toxic and odor-free; cost.
Spraying fertilizer outside the roots, some apply a large number of elements; some apply trace elements; some apply organic liquid fertilizer; some use soil amendments to prepare liquid fertilizer; some apply fertilizer and liquid. Although the types of fertilizer applied outside the roots are Different, but will supplement and improve nutrition from different aspects, which is conducive to the growth and development of crops. Nowadays, there are many fertilizers used by different enterprises and manufacturers in the market for external spraying. Most of them are feasible as a supplementary measure to increase crop yield. However, some dealers have increased the rate of increase to 20~30%, or even higher, which is obviously unrealistic. Some of them are not credible to expand their functions. The majority of consumers must not be fooled. Being cheated.
In order to reasonably and effectively carry out foliar spray application on crops, the following points must be paid attention to in production measures and application techniques: 1. Spraying fertilizer outside the root is one of the effective techniques for increasing yield, but it cannot replace soil fertilization. Because a large amount of fertilizer must be directly applied to the soil layer. When the crop lacks certain elements or the root system of the crop is gradually declining, the effect of spraying fertilizer on the root is better. Second, the relationship between the external fertilizer and the climate is extremely high. Large. First, when the temperature is too high, it is not suitable for application. After 4:00 pm, the application is not obvious. When the weather is dry, the effect is not significant. When the soil is moderate, the effect is good. Third, the windy weather should not be applied. Fourth, the rainfall immediately after application. After the rain, it should be re-sprayed. Third, it is necessary to distinguish the types of fertilizers. For example, the concentration of urea spray is 1%~2%, the concentration of potassium dihydrogen phosphate is 0.2~0.3%, and the concentration of quick-learn boron is 0.1~. 0.2%, the concentration of active liquid fertilizer of Huimanfeng or Zhuangfuxing is generally 1:500 times, the concentration of organic coordination fertilizer for controllable crop pests and diseases is 1:300 times, the concentration of ammonium molybdate is 0.02~0.05%, sulfuric acid The concentration of zinc is 0.05~0.2%. If it exceeds the concentration, it will cause fat damage. In order to save labor, these
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