1. Principles of peanut fertilization
(1) Mainly organic fertilizers, supplemented by inorganic fertilizers. Organic fertilizers can increase the soil aggregate structure, improve soil physical and chemical properties, and benefit rhizobial activity and increase nitrogen sources. The combination of organic fertilizers and chemical fertilizers can reduce the loss and fixation of inorganic fertilizers.
(2) Apply enough base fertilizer and appropriate topdressing. Organic fertilizer is used as the base fertilizer. Under the condition of applying the base fertilizer, it should be applied in a timely and appropriate amount according to the growth situation.
(3) Reasonable combination of nitrogen, phosphorus, potassium and micro-fertilizer.
2. Types, methods and quantities of fertilization
(1) Base fertilizer and seed fertilizer: Insufficient fertilizer input and partiality have always been one of the main factors limiting the yield of peanuts, especially in low- and medium-yield fields. This year, it is necessary to increase the amount of fertilizer to meet the needs of the whole growth period of peanuts. Peanut-based fertilizers account for 80%-90% of the total fertilizer, mainly organic fertilizers, combined with chemical fertilizers such as nitrogen and phosphorus. Specific methods vary with the amount and type of fertilization. Generally, it is a combination of dispersion and concentration. Most of the soil is planted as a base fertilizer before sowing, and a small part is combined with the planting concentrated ditch or acupoint application. Before sowing, the seeds are soaked with 0.2%-0.3% ammonium molybdate or 0.01%-0.1% boric acid aqueous solution and dried to supplement the trace elements of peanut. When planting, apply 2-3 kg of potassium dihydrogen phosphate or 3-4 kg of diammonium phosphate.
(2) This year, it is required to apply 2500-5000 kg of organic fertilizer per mu, 10 kg of urea or 15 parts of diammonium, 4-6 kg of potassium dihydrogen phosphate, and promote the use of long-acting compound fertilizer, 30-50 kg per mu. In order to comprehensively improve the level of fertilization, achieve a sufficient balance of fertilization purposes.
(1) Mainly organic fertilizers, supplemented by inorganic fertilizers. Organic fertilizers can increase the soil aggregate structure, improve soil physical and chemical properties, and benefit rhizobial activity and increase nitrogen sources. The combination of organic fertilizers and chemical fertilizers can reduce the loss and fixation of inorganic fertilizers.
(2) Apply enough base fertilizer and appropriate topdressing. Organic fertilizer is used as the base fertilizer. Under the condition of applying the base fertilizer, it should be applied in a timely and appropriate amount according to the growth situation.
(3) Reasonable combination of nitrogen, phosphorus, potassium and micro-fertilizer.
2. Types, methods and quantities of fertilization
(1) Base fertilizer and seed fertilizer: Insufficient fertilizer input and partiality have always been one of the main factors limiting the yield of peanuts, especially in low- and medium-yield fields. This year, it is necessary to increase the amount of fertilizer to meet the needs of the whole growth period of peanuts. Peanut-based fertilizers account for 80%-90% of the total fertilizer, mainly organic fertilizers, combined with chemical fertilizers such as nitrogen and phosphorus. Specific methods vary with the amount and type of fertilization. Generally, it is a combination of dispersion and concentration. Most of the soil is planted as a base fertilizer before sowing, and a small part is combined with the planting concentrated ditch or acupoint application. Before sowing, the seeds are soaked with 0.2%-0.3% ammonium molybdate or 0.01%-0.1% boric acid aqueous solution and dried to supplement the trace elements of peanut. When planting, apply 2-3 kg of potassium dihydrogen phosphate or 3-4 kg of diammonium phosphate.
(2) This year, it is required to apply 2500-5000 kg of organic fertilizer per mu, 10 kg of urea or 15 parts of diammonium, 4-6 kg of potassium dihydrogen phosphate, and promote the use of long-acting compound fertilizer, 30-50 kg per mu. In order to comprehensively improve the level of fertilization, achieve a sufficient balance of fertilization purposes.
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