Organic fertilizer is a very common condition for growing organic crops. The crops grown from organic fertilizers are not polluted and people eat healthier. The following describes the effects of trace elements in organic fertilizers:
Trace element organic fertilizers are mainly inorganic salts or oxides. Some minerals, metallurgical by-products or waste materials can often be used as raw materials for trace element fertilizers. The production methods are the same as those for inorganic chemical products. In addition, there are two forms of trace element fertilizers: one is a glassy substance containing trace nutrients, which is made by co-melting the corresponding inorganic salt or oxide with silica; the other is chelation of metal elements. A chelate compound made of, for example, copper, iron, manganese, and zinc with ethylenediaminetetraacetic acid. This chelated micronutrient fertilizer is effective and quick-acting, but it is costly and has not been widely used.
There are two methods for applying trace element fertilizers: soil application and foliar application. Since the application amount per unit area is small, it must be diluted with a large amount of inert material before application, and uneven application may poison some crops. Trace element fertilizers are often mixed into a constant fertilizer for application together. The following two methods are usually used.
It is convenient and economical to mix in the production of constant granular fertilizer. It does not produce nutrient unevenness. The disadvantage is that it is less flexible and it is difficult to meet various requirements of the market.
Coating trace element organic fertilizer powder on the surface of constant granular fertilizer This operation can be carried out in a secondary processing plant and can meet the needs of the market at any time. The constant granular fertilizer and the trace element fertilizer are mixed in a small mixer for about 1 minute, and then a small amount of an aqueous solution of oil, water or trace element salts is sprayed, and mixing is continued, and the product remains dry.
The fertilizer effect of fertilizer micronutrient fertilizer is related to the nature of soil. In alkaline soils, in addition to the increased effectiveness of molybdenum, others reduce fertilizer efficiency. For the valence element, the solubility of the reduced salt is generally larger than that of the oxidized salt, so the soil has a reducing property, and the fertilization effects of elements such as iron, manganese and copper are increased. Organic acids in soil organic matter have a synergistic effect on some elements, and complexes formed with iron can increase the fertilizer efficiency of iron, but reduce the fertilizer efficiency of copper and zinc.
Method of use Soil fertilization Commonly used micro-fertilizers in addition to chemical fertilizers (such as borax, zinc sulfate, manganese sulfate, etc.), as well as integrated fertilizers, glass fertilizers, slag or scraps, are often used as base fertilizers and seed fertilizers. The application method is as follows: before planting, it is combined with the soil preparation into the soil, or mixed with the organic fertilizer and uniformly applied, and the application amount is determined according to the type of the crop and the micro-fertilizer, and generally should not be too large. For example, for rice, zinc sulphate is applied for 1 kg per mu, borax is generally used for 0.5 kg to 1 kg per mu, and it should be mixed with manure and other organic fertilizers to prevent local damage caused by concentrated application.
Top dressing The soluble micro-organic fertilizer is formulated into a certain concentration of aqueous solution to spray the stems and leaves of the crop. The advantage of this method is to avoid the harm caused by uneven fertilizer in the soil. At the same time, it can be sprayed several times according to the specific needs in different development stages of the crop to improve the fertilizer efficiency. Conditional areas can be mechanically or aircraft sprayed on a large area, typically at a spray concentration of 0.01% to 0.05%.
Seed Treatment Soaking seeds or seed dressing with an aqueous solution of trace elements before sowing is the most cost-effective method of use, which can greatly reduce the amount of fertilizer used. The soaking solution concentration of boric acid or borax is 0.01% to 0.03%. Only 5 liters of this solution is used per 500 kg of seed. Soybean is planted with ammonium molybdate, which requires only 10 to 20 grams per acre.
Trace element organic fertilizers are mainly inorganic salts or oxides. Some minerals, metallurgical by-products or waste materials can often be used as raw materials for trace element fertilizers. The production methods are the same as those for inorganic chemical products. In addition, there are two forms of trace element fertilizers: one is a glassy substance containing trace nutrients, which is made by co-melting the corresponding inorganic salt or oxide with silica; the other is chelation of metal elements. A chelate compound made of, for example, copper, iron, manganese, and zinc with ethylenediaminetetraacetic acid. This chelated micronutrient fertilizer is effective and quick-acting, but it is costly and has not been widely used.
There are two methods for applying trace element fertilizers: soil application and foliar application. Since the application amount per unit area is small, it must be diluted with a large amount of inert material before application, and uneven application may poison some crops. Trace element fertilizers are often mixed into a constant fertilizer for application together. The following two methods are usually used.
It is convenient and economical to mix in the production of constant granular fertilizer. It does not produce nutrient unevenness. The disadvantage is that it is less flexible and it is difficult to meet various requirements of the market.
Coating trace element organic fertilizer powder on the surface of constant granular fertilizer This operation can be carried out in a secondary processing plant and can meet the needs of the market at any time. The constant granular fertilizer and the trace element fertilizer are mixed in a small mixer for about 1 minute, and then a small amount of an aqueous solution of oil, water or trace element salts is sprayed, and mixing is continued, and the product remains dry.
The fertilizer effect of fertilizer micronutrient fertilizer is related to the nature of soil. In alkaline soils, in addition to the increased effectiveness of molybdenum, others reduce fertilizer efficiency. For the valence element, the solubility of the reduced salt is generally larger than that of the oxidized salt, so the soil has a reducing property, and the fertilization effects of elements such as iron, manganese and copper are increased. Organic acids in soil organic matter have a synergistic effect on some elements, and complexes formed with iron can increase the fertilizer efficiency of iron, but reduce the fertilizer efficiency of copper and zinc.
Method of use Soil fertilization Commonly used micro-fertilizers in addition to chemical fertilizers (such as borax, zinc sulfate, manganese sulfate, etc.), as well as integrated fertilizers, glass fertilizers, slag or scraps, are often used as base fertilizers and seed fertilizers. The application method is as follows: before planting, it is combined with the soil preparation into the soil, or mixed with the organic fertilizer and uniformly applied, and the application amount is determined according to the type of the crop and the micro-fertilizer, and generally should not be too large. For example, for rice, zinc sulphate is applied for 1 kg per mu, borax is generally used for 0.5 kg to 1 kg per mu, and it should be mixed with manure and other organic fertilizers to prevent local damage caused by concentrated application.
Top dressing The soluble micro-organic fertilizer is formulated into a certain concentration of aqueous solution to spray the stems and leaves of the crop. The advantage of this method is to avoid the harm caused by uneven fertilizer in the soil. At the same time, it can be sprayed several times according to the specific needs in different development stages of the crop to improve the fertilizer efficiency. Conditional areas can be mechanically or aircraft sprayed on a large area, typically at a spray concentration of 0.01% to 0.05%.
Seed Treatment Soaking seeds or seed dressing with an aqueous solution of trace elements before sowing is the most cost-effective method of use, which can greatly reduce the amount of fertilizer used. The soaking solution concentration of boric acid or borax is 0.01% to 0.03%. Only 5 liters of this solution is used per 500 kg of seed. Soybean is planted with ammonium molybdate, which requires only 10 to 20 grams per acre.
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