In recent years, various water-soluble fertilizers have been listed, and many farmers and fertilizer marketers have asked about the characteristics and application methods of water-soluble fertilizers. for reference.
Q: What is water soluble fertilizer? What types are there? What are the national or industry standards for product quality?
A: Water-soluble fertilizer refers to liquid or solid fertilizer that can be used for irrigation, fertilization, leafless fertilization, soilless cultivation and soaking roots. China is a country with a shortage of water resources and emphasizes the integrated management of water and fertilizer. Therefore, the development and rational application of water-soluble fertilizers are of great significance and broad development prospects. The product types can be divided into a large number of elements of water-soluble fertilizers, trace elements of water-soluble fertilizers, humic acid-containing water-soluble fertilizers, and amino acid-soluble fertilizers. The Chinese agricultural industry standards have clear requirements for the quality of related fertilizers.
A large number of elements of water-soluble fertilizers refer to liquid or solid water-soluble fertilizers containing nitrogen, phosphorus and potassium as main components and adding appropriate trace elements. The quality of the products must comply with the agricultural industry standard NY1107-2006. The standard stipulates that the content of a large amount of solid products should not be less than 50%, the content of trace elements should not be less than 0.5%; the content of a large amount of liquid products should not be less than 500 g / liter, and the content of trace elements should not be less than 5 g / liter.
Trace element Water-soluble fertilizer refers to liquid or solid water-soluble fertilizer prepared from the proportion of trace elements of copper, iron, manganese, zinc, boron and molybdenum in suitable crops. The quality of the product is subject to the agricultural industry standard NY1428-2007. The standard stipulates that the content of trace elements in solid products shall not be less than 10%; the content of trace elements in liquid products shall not be less than 100 g/l.
The amino acid-soluble fertilizer is a water-soluble fertilizer obtained by mixing and concentrating amino acids with calcium, trace elements and the like, and is mainly used as an amino acid foliar fertilizer. The product is divided into two types: trace element type and calcium type type. The Ministry of Agriculture technical standard NY1429-2007 stipulates that the content of free amino acids of trace element type amino acid-soluble fertilizers, solid products and liquid products are not less than 10% and 100 g / liter respectively; the total content of at least two trace elements is not lower than respectively 2.0% and 20 g/l. Calcium-type amino acid-soluble fertilizers are also available in solid products and liquid products. The indexes are the same as those of trace elements. Only calcium content, solid products and liquid products are not less than 3.0% and 30 g/L, respectively.
The humic acid-containing water-soluble fertilizer is a water-soluble fertilizer containing humic acid. Humic acid is a kind of natural high molecular organic matter formed by microbial decomposition and geochemical processes of organic matter such as animal and plant residues. It is extracted from peat, lignite and weathered coal, which can stimulate plant growth, improve soil fertility and improve Nutrient availability and crop resilience. Product quality needs to meet the agricultural industry standard NY1106-2006. The products are classified into type I and type II according to the content of humic acid. According to the standard, the content of humic acid of type I and type II of a large number of elemental solid products is not less than 3% and 4%, respectively, and the content of large elements is not less than 35% and 20 respectively. %; I and II humic acid content (g/L) of a large number of elemental liquid products are not less than 30 and 40 respectively, and the content of a large amount of elements (g/L) is not less than 350 and 200 respectively; containing humic acid trace element type The solid product has a humic acid content of not less than 3% and a trace element content of not less than 6%.
Q: How should the water-soluble fertilizer be applied reasonably? Answer: Among the above water-soluble fertilizers, a large amount of trace element water-soluble fertilizers are mixed with other fertilizers after appropriate dilution, etc., mainly used as base fertilizer and top dressing, and can also be used for foliar spraying, flushing, soaking, and seed dressing. Special attention should be paid to the application rate, dilution concentration and application method, so different fertilizers, different application methods, different crops, different growth periods, etc. have different requirements. The amount of fertilization of a large amount of water-soluble fertilizer can be measured based on soil fertilization or the amount of nutrient recommended by experts, and then converted into the amount of water-soluble fertilizer applied, and indicates whether the application amount is a stock solution or a diluted solution. Since the utilization rate of water-soluble fertilizer is higher than that of conventional solid fertilizer, the amount of nutrient application should be appropriately reduced. It is necessary to prevent burning and burning of seedlings due to excessive concentration of fertilizer solution or improper fertilization position. The humic acid-containing water-soluble fertilizer is mainly used as a base fertilizer after being mixed with fertilizer, applying 0.02%-0.05% aqueous solution per mu to 300-400 kg mixed with farmyard manure, using a 0.01%-0.05% aqueous solution near the root system for topdressing, soaking and rooting. For example, soaking rapeseed with 0.01% to 0.05% aqueous solution for 5 to 10 hours; amino acid fertilizer is mainly used as foliar fertilizer in application, and can also be used for soaking seeds, seed dressing and roots. Soaking seeds are generally immersed in the diluted solution for 6-8 hours, and then sown after drying and drying; the seed dressing is to spray the diluted solution evenly on the surface of the seed, and then sown after 6 hours. For specific products, we must strictly follow the product specifications.
Q: What are the characteristics of urea ammonium nitrate solution? How should it be applied reasonably?
A: At present, the urea ammonium nitrate solution in the Chinese fertilizer market is mostly imported products, containing nitrogen (N) 28%~32% (by mass), of which 1/4 of ammonium nitrogen and nitrate nitrogen, amide nitrogen 1 /2. Because of complete water solubility, nitrate nitrogen and ammonium nitrogen are beneficial to seedling; amide nitrogen can be effective after 4 to 7 days of application, so the fertilizer is quick and effective, and the utilization rate is further improved. It is suitable for a variety of crops, especially vegetables. The original solution can be diluted more than 3 times, combined with soil preparation and organic fertilizer or soil mixed as base fertilizer, diluted 4 times or more combined with irrigation or rushing for topdressing, diluted 50-100 times for foliar fertilizer, the smaller the seedling age, the larger the dilution factor; It can also be used for sprinkler irrigation and drip irrigation. The amount applied is generally estimated as described above. Pay attention to the application with phosphorus and potassium fertilizer, do not flood with large water and mix with alkaline fertilizer. For specific application methods, please refer to the product manual.
The agricultural measures are expensive according to local conditions. It is recommended that farmers' friends can make a simple comparative test on their own soil in order to test the effect of fertilizer and determine the most suitable dosage.
(Senior Consultant of Sinofert, Professor of China Agricultural University Wang Xingren)
Q: What is water soluble fertilizer? What types are there? What are the national or industry standards for product quality?
A: Water-soluble fertilizer refers to liquid or solid fertilizer that can be used for irrigation, fertilization, leafless fertilization, soilless cultivation and soaking roots. China is a country with a shortage of water resources and emphasizes the integrated management of water and fertilizer. Therefore, the development and rational application of water-soluble fertilizers are of great significance and broad development prospects. The product types can be divided into a large number of elements of water-soluble fertilizers, trace elements of water-soluble fertilizers, humic acid-containing water-soluble fertilizers, and amino acid-soluble fertilizers. The Chinese agricultural industry standards have clear requirements for the quality of related fertilizers.
A large number of elements of water-soluble fertilizers refer to liquid or solid water-soluble fertilizers containing nitrogen, phosphorus and potassium as main components and adding appropriate trace elements. The quality of the products must comply with the agricultural industry standard NY1107-2006. The standard stipulates that the content of a large amount of solid products should not be less than 50%, the content of trace elements should not be less than 0.5%; the content of a large amount of liquid products should not be less than 500 g / liter, and the content of trace elements should not be less than 5 g / liter.
Trace element Water-soluble fertilizer refers to liquid or solid water-soluble fertilizer prepared from the proportion of trace elements of copper, iron, manganese, zinc, boron and molybdenum in suitable crops. The quality of the product is subject to the agricultural industry standard NY1428-2007. The standard stipulates that the content of trace elements in solid products shall not be less than 10%; the content of trace elements in liquid products shall not be less than 100 g/l.
The amino acid-soluble fertilizer is a water-soluble fertilizer obtained by mixing and concentrating amino acids with calcium, trace elements and the like, and is mainly used as an amino acid foliar fertilizer. The product is divided into two types: trace element type and calcium type type. The Ministry of Agriculture technical standard NY1429-2007 stipulates that the content of free amino acids of trace element type amino acid-soluble fertilizers, solid products and liquid products are not less than 10% and 100 g / liter respectively; the total content of at least two trace elements is not lower than respectively 2.0% and 20 g/l. Calcium-type amino acid-soluble fertilizers are also available in solid products and liquid products. The indexes are the same as those of trace elements. Only calcium content, solid products and liquid products are not less than 3.0% and 30 g/L, respectively.
The humic acid-containing water-soluble fertilizer is a water-soluble fertilizer containing humic acid. Humic acid is a kind of natural high molecular organic matter formed by microbial decomposition and geochemical processes of organic matter such as animal and plant residues. It is extracted from peat, lignite and weathered coal, which can stimulate plant growth, improve soil fertility and improve Nutrient availability and crop resilience. Product quality needs to meet the agricultural industry standard NY1106-2006. The products are classified into type I and type II according to the content of humic acid. According to the standard, the content of humic acid of type I and type II of a large number of elemental solid products is not less than 3% and 4%, respectively, and the content of large elements is not less than 35% and 20 respectively. %; I and II humic acid content (g/L) of a large number of elemental liquid products are not less than 30 and 40 respectively, and the content of a large amount of elements (g/L) is not less than 350 and 200 respectively; containing humic acid trace element type The solid product has a humic acid content of not less than 3% and a trace element content of not less than 6%.
Q: How should the water-soluble fertilizer be applied reasonably? Answer: Among the above water-soluble fertilizers, a large amount of trace element water-soluble fertilizers are mixed with other fertilizers after appropriate dilution, etc., mainly used as base fertilizer and top dressing, and can also be used for foliar spraying, flushing, soaking, and seed dressing. Special attention should be paid to the application rate, dilution concentration and application method, so different fertilizers, different application methods, different crops, different growth periods, etc. have different requirements. The amount of fertilization of a large amount of water-soluble fertilizer can be measured based on soil fertilization or the amount of nutrient recommended by experts, and then converted into the amount of water-soluble fertilizer applied, and indicates whether the application amount is a stock solution or a diluted solution. Since the utilization rate of water-soluble fertilizer is higher than that of conventional solid fertilizer, the amount of nutrient application should be appropriately reduced. It is necessary to prevent burning and burning of seedlings due to excessive concentration of fertilizer solution or improper fertilization position. The humic acid-containing water-soluble fertilizer is mainly used as a base fertilizer after being mixed with fertilizer, applying 0.02%-0.05% aqueous solution per mu to 300-400 kg mixed with farmyard manure, using a 0.01%-0.05% aqueous solution near the root system for topdressing, soaking and rooting. For example, soaking rapeseed with 0.01% to 0.05% aqueous solution for 5 to 10 hours; amino acid fertilizer is mainly used as foliar fertilizer in application, and can also be used for soaking seeds, seed dressing and roots. Soaking seeds are generally immersed in the diluted solution for 6-8 hours, and then sown after drying and drying; the seed dressing is to spray the diluted solution evenly on the surface of the seed, and then sown after 6 hours. For specific products, we must strictly follow the product specifications.
Q: What are the characteristics of urea ammonium nitrate solution? How should it be applied reasonably?
A: At present, the urea ammonium nitrate solution in the Chinese fertilizer market is mostly imported products, containing nitrogen (N) 28%~32% (by mass), of which 1/4 of ammonium nitrogen and nitrate nitrogen, amide nitrogen 1 /2. Because of complete water solubility, nitrate nitrogen and ammonium nitrogen are beneficial to seedling; amide nitrogen can be effective after 4 to 7 days of application, so the fertilizer is quick and effective, and the utilization rate is further improved. It is suitable for a variety of crops, especially vegetables. The original solution can be diluted more than 3 times, combined with soil preparation and organic fertilizer or soil mixed as base fertilizer, diluted 4 times or more combined with irrigation or rushing for topdressing, diluted 50-100 times for foliar fertilizer, the smaller the seedling age, the larger the dilution factor; It can also be used for sprinkler irrigation and drip irrigation. The amount applied is generally estimated as described above. Pay attention to the application with phosphorus and potassium fertilizer, do not flood with large water and mix with alkaline fertilizer. For specific application methods, please refer to the product manual.
The agricultural measures are expensive according to local conditions. It is recommended that farmers' friends can make a simple comparative test on their own soil in order to test the effect of fertilizer and determine the most suitable dosage.
(Senior Consultant of Sinofert, Professor of China Agricultural University Wang Xingren)
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