1. Fertilizer characteristics Potatoes are vegetables that are rich in carbohydrates and underground tubers. The potato likes cold and mild climate, and can withstand light frost. Therefore, it has a wide cultivation range, and it has a variety of uses such as vegetable and grain production and production of starch and alcohol.
The primary roots of the potato and the roots of the vine are required to absorb various nutrients. Its absorption of nutrients is characterized by the highest absorption of potassium, followed by nitrogen and phosphorus, which is a kind of potassium-loving vegetable. As the growth period of the potato is extended, the nutrient absorption rate also increases. Generally, the nutrient absorption during seedling stage is less than 10% of the total amount absorbed during the whole growth period; the absorption rate of nitrogen, phosphorus and potassium in the hair growth period accounts for about 30% respectively; more than half of the nutrients are absorbed during the potato production period. Therefore, the supply of sufficient nitrogen in the seedling stage and the flowering stage plays an important role in ensuring the robust growth of the early roots and leaves. And sufficient potassium nutrition can promote starch synthesis, and has obvious effects on tuber swelling.
2. Technical points of fertilization Potatoes are root-root vegetables, which require soil conditions with moderate soil temperature and good ventilation. Generally, it should be selected to be loose, fertile, well ventilated and deep sandy soil. Its fertilization techniques are characterized by:
First of all, we must apply enough base fertilizer. Decomposed high-quality organic fertilizer should be used, generally about 75,000 kilograms per hectare, combined with deep-pitching and ridges before sowing. In addition to the application of organic fertilizer, some phosphorus and potassium fertilizer (or plant ash) can be applied as seed fertilizer in the seeding hole or ditch when planting, generally 150-225 kg of diammonium phosphate or 225 kg of ternary compound fertilizer per hectare, or Depending on the soil fertility status, lay a good foundation for high yield of potatoes.
Secondly, it is necessary to topdress early. Generally, the seedlings (after the seedlings) are topdressed with nitrogen fertilizer, combined with watering. The amount of this application is 50% of the amount of nitrogen fertilizer. Its purpose is to promote stem and leaf growth and expand the assimilation area. The remaining nitrogen fertilizer should be applied at the beginning of the planting. In the late stage of hair growth, in order to promote tuber enlargement and increase yield, a potash (or plant ash) can be applied. It is worth noting that scientific fertilization and management, coordination of the growth of shoots and shoots in the upper part of the earth and the expansion of the underground tubers are the key to the high yield of potatoes.
Source: China Agriculture Network
The primary roots of the potato and the roots of the vine are required to absorb various nutrients. Its absorption of nutrients is characterized by the highest absorption of potassium, followed by nitrogen and phosphorus, which is a kind of potassium-loving vegetable. As the growth period of the potato is extended, the nutrient absorption rate also increases. Generally, the nutrient absorption during seedling stage is less than 10% of the total amount absorbed during the whole growth period; the absorption rate of nitrogen, phosphorus and potassium in the hair growth period accounts for about 30% respectively; more than half of the nutrients are absorbed during the potato production period. Therefore, the supply of sufficient nitrogen in the seedling stage and the flowering stage plays an important role in ensuring the robust growth of the early roots and leaves. And sufficient potassium nutrition can promote starch synthesis, and has obvious effects on tuber swelling.
2. Technical points of fertilization Potatoes are root-root vegetables, which require soil conditions with moderate soil temperature and good ventilation. Generally, it should be selected to be loose, fertile, well ventilated and deep sandy soil. Its fertilization techniques are characterized by:
First of all, we must apply enough base fertilizer. Decomposed high-quality organic fertilizer should be used, generally about 75,000 kilograms per hectare, combined with deep-pitching and ridges before sowing. In addition to the application of organic fertilizer, some phosphorus and potassium fertilizer (or plant ash) can be applied as seed fertilizer in the seeding hole or ditch when planting, generally 150-225 kg of diammonium phosphate or 225 kg of ternary compound fertilizer per hectare, or Depending on the soil fertility status, lay a good foundation for high yield of potatoes.
Secondly, it is necessary to topdress early. Generally, the seedlings (after the seedlings) are topdressed with nitrogen fertilizer, combined with watering. The amount of this application is 50% of the amount of nitrogen fertilizer. Its purpose is to promote stem and leaf growth and expand the assimilation area. The remaining nitrogen fertilizer should be applied at the beginning of the planting. In the late stage of hair growth, in order to promote tuber enlargement and increase yield, a potash (or plant ash) can be applied. It is worth noting that scientific fertilization and management, coordination of the growth of shoots and shoots in the upper part of the earth and the expansion of the underground tubers are the key to the high yield of potatoes.
Source: China Agriculture Network
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