The potato is mainly used as a vegetable, and the edible organ is a tuber with a high starch content. Fertilization is generally based on organic fertilizers, with appropriate application of nitrogen, phosphorus and potassium fertilizers. At the same time, the application of medium and trace element fertilizers can also increase yield and improve quality. Potato is a potassium-producing crop. Potassium fertilizer application has an obvious effect on yield increase. Potassium sulfate The effect is better. The experiment shows that nitrogen and potassium have obvious interaction effects on potato yield. In addition, boron fertilizer and magnesium fertilizer have obvious yield increasing effects on potato. The effective boron content in soil is 0.6-0.66 mg/kg, which can be used as a critical range for potential boron deficiency in potato soil. Applying 3 kg of magnesium sulfate per mu can alleviate browning symptoms in stems and fruits.
1. Fertilization amount, 300-500 kg of organic fertilizer, 6-7 kg of pure nitrogen, 4.5-5.5 kg of phosphorus pentafluoride, and 8-9 kg of potassium oxide.
2. During the fertilization period, the nitrogen fertilizer should be applied in stages, using the combination of base fertilizer, seed fertilizer and top dressing to meet the nitrogen requirements of the potato in each period. Phosphate fertilizer is generally used as base fertilizer or seed fertilizer. If it is used as top dressing, it should be applied deeply, but its fertilizer efficiency is still not high. The application period of potash fertilizer can be used as the base fertilizer type fertilizer, or it can be applied later in the south.
3. Fertilization method, the base fertilizer is more than 300-500 kg of organic fertilizer and 15-20 kg of compound fertilizer. The specific method is: one autumn application, that is, before the autumn tillage, the organic and chemical fertilizers are scattered on the surface, and then the tillage is carried out to fully mix the fertilizer with the soil. The second is spring application, which is applied to the surface before the spring ploughing, and then ploughed. The third is the application of fertilizer, which is applied directly to the seeding ditch during sowing.
Topdressing should be combined with the reasonable growth period of potato growth. The time can be selected in the seedling stage, the bud stage and the initial stage. Each fertilizer should be applied with different fertilizers, nitrogen, phosphorus and potassium. Generally, the seedling stage and the bud stage can be applied with nitrogen fertilizer and phosphate fertilizer, and 25 kg of ammonium sulfate and 20 kg of diammonium phosphate and 20 kg of potassium sulfate per acre. In the bud stage and the initial flowering stage, phosphorus and potassium fertilizers are applied, and 10 kg of diammonium phosphate and 15 kg of potassium sulfate are used. Never use nitrogen fertilizer after the initial flowering period, so as not to cause stems and leaves to grow. Affect the transport of nutrients to the tubers.
Medium-micro-fertilizers such as borax and magnesium fertilizers are generally sprayed at the beginning of flowering stage, once every 7 days, three times in succession. The concentration is controlled at 0.05% borax and 0.5% magnesium sulfate.
Farmers Daily
1. Fertilization amount, 300-500 kg of organic fertilizer, 6-7 kg of pure nitrogen, 4.5-5.5 kg of phosphorus pentafluoride, and 8-9 kg of potassium oxide.
2. During the fertilization period, the nitrogen fertilizer should be applied in stages, using the combination of base fertilizer, seed fertilizer and top dressing to meet the nitrogen requirements of the potato in each period. Phosphate fertilizer is generally used as base fertilizer or seed fertilizer. If it is used as top dressing, it should be applied deeply, but its fertilizer efficiency is still not high. The application period of potash fertilizer can be used as the base fertilizer type fertilizer, or it can be applied later in the south.
3. Fertilization method, the base fertilizer is more than 300-500 kg of organic fertilizer and 15-20 kg of compound fertilizer. The specific method is: one autumn application, that is, before the autumn tillage, the organic and chemical fertilizers are scattered on the surface, and then the tillage is carried out to fully mix the fertilizer with the soil. The second is spring application, which is applied to the surface before the spring ploughing, and then ploughed. The third is the application of fertilizer, which is applied directly to the seeding ditch during sowing.
Topdressing should be combined with the reasonable growth period of potato growth. The time can be selected in the seedling stage, the bud stage and the initial stage. Each fertilizer should be applied with different fertilizers, nitrogen, phosphorus and potassium. Generally, the seedling stage and the bud stage can be applied with nitrogen fertilizer and phosphate fertilizer, and 25 kg of ammonium sulfate and 20 kg of diammonium phosphate and 20 kg of potassium sulfate per acre. In the bud stage and the initial flowering stage, phosphorus and potassium fertilizers are applied, and 10 kg of diammonium phosphate and 15 kg of potassium sulfate are used. Never use nitrogen fertilizer after the initial flowering period, so as not to cause stems and leaves to grow. Affect the transport of nutrients to the tubers.
Medium-micro-fertilizers such as borax and magnesium fertilizers are generally sprayed at the beginning of flowering stage, once every 7 days, three times in succession. The concentration is controlled at 0.05% borax and 0.5% magnesium sulfate.
Farmers Daily
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