Organic Fertilizer Inorganic Fertilizer is a combination of manure and organic fertilizer. It has complete nutrients and long-lasting fertilizer effects. Chemical fertilizers are inorganic fertilizers, which have a single nutrient content, a high content, and a quick effect. The application of organic fertilizers combined with inorganic fertilizers can make good use of fertilizers, and their fertilizer effects can be greatly improved. If the human and animal dung is applied in combination with ammonium chloride, superphosphate, and potassium chloride, the yield can be increased by 10% to 15% compared to the single fertilizer. Formula fertilization will be combined with nitrogen, phosphorus, potassium and trace elements, called formula fertilization. According to the experiment, the utilization rate of nitrogen is 30%~38% for single application of urea, and the utilization rate of nitrogen can be increased to 58%~60% for the application of formula; the utilization rate of single application of phosphate fertilizer and phosphorus pentoxide is 12%~ 14%, the implementation of formula application, the utilization rate increased to 35% ~ 38%; single application of potassium chloride utilization of only 31% to 35%, formula application, the utilization rate can be increased to 57% ~ 61%. Deep application of nitrogen fertilizer with nitrogen fertilizer can effectively prevent nutrient loss and increase nitrogen utilization rate. According to the experiment: ammonium bicarbonate application, nitrogen utilization rate is 28.6%, deep application, nitrogen utilization rate can be increased to 58.6%; urea application, nitrogen utilization rate is 42%, deep application, nitrogen utilization The rate can be increased to more than 80%. Centralized application of limited fertilizers is applied preferentially to low-yielding fields. According to the experiment, the same amount of 5 kg urea and potassium chloride are applied to three types of fields: high-yield field, middle-yield field, and low-yield field. The effect of increasing production is different, with an average of 1 kg of urea per gram, and high-yield fields increase rice production. 3.5 kg, 5.8 kg of rice in middle-quality rice, and 8.8 kg of rice in low-yield fields.
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