Management measures to increase sweet potato production
It is directly related to the aeration of the soil that the early and late dates of the sweet potato and the number of the sweet potato tubers, and the length and the duration of the expansion of the sweet potato tuber are improved. If the soil is poorly ventilated, oxygen deficiency can hinder tuberous respiration and absorption of nutrients, thereby inhibiting tuberous root enlargement. Therefore, in order to achieve a high yield of sweet potato, we must plough the soil. Deep plowing can break the bottom of the plow, thicken the living soil layer, loosen the soil, enhance the permeability, is conducive to water conservation and conservation, and facilitates the down-rooting of sweet potato roots and resistance to drought and flood. The depth of deep plowing is generally about 25 cm, and high-yield fields should be plowed about 35 cm. Deep ploughing should be combined with the improvement of the soil, such as adding sand to viscous soil, adding mud to sand, and improving the soil structure to create good conditions for root development. The high-yielding field sweet potato ridge yielded about 20% more than the flat crop. Therefore, ridging is an effective measure to increase production. At the same time, high-density planting is the key to the high yield of sweet potato. The test results showed that the ridge distance was about 60 to 90 cm, the density was in the range of 4000 to 6000 plants, and the ridge distance was about 70 cm, and the density was the highest among 5000 plants.
Scientific formula Fertilization sweet potato is a high-yielding crop. To exert its high-yield performance, it is necessary to apply sufficient fertilizer. The farming systems for sweet potato cultivation in southern provinces are mainly wheat, potato, and potato, and the main crops are heavy, and the soil is deficient in oxygen, phosphorus, and potassium. Therefore, the ratio of nitrogen, phosphorus and potassium in high-yielding fields is 1:0.5:3. Fertilizers should be dominated by basal fertilizers, and basal fertilizers generally account for 60% to 80% of total fertilizers. Applying basal fertilizers must be based on multiple application of coarse fertilizers, and sufficient phosphate fertilizer, potash fertilizer, and zinc fertilizer should be applied. Muping applied 3,000 kg of crude fertilizer, 15 kg of potassium sulfate, 25 kg of superphosphate, 1 kg of zinc sulfate, and 25-30 kg of ammonium bicarbonate. Nitrogen fertilizer is applied depending on the situation. Generally, it is applied more thinly and less fertilizer is applied. In order to achieve a high input, high output, high efficiency and a virtuous circle.
Early planting of sweet potatoes with early leaves can extend the growth period of sweet potatoes, and can fully utilize the rainy season from April to June, which is good for rooting and sprouting of sweet potato roots, especially for early planting of young and tender seedlings, rapid seedling growth, and early potato growth. The survival rate is high and there is a clear increase in production. When the seedlings are planted, they need to be deeply planed, watered, and covered with soil. Summer potato is generally inserted in late June.
Fertilizer-filled sweet potato is a hi potassium crop. In the tuber enlargement period, potash-based fertilizer should be used to irrigate the rhizosphere soil to meet the large demand for sweet potato in later period. Generally in late August with 1% potassium dihydrogen phosphate solution 100 ~ 150 kg per mu. For defertilization plots, 100 kg of NPK can be fed and poured along cracks. In case of continuous dry weather, water should be poured in a timely manner in places where conditions permit, but it should not be watered within 20 days before harvest so as not to reduce the resistance of the roots. In case of Qiuyu, it is necessary to drain the drain in time to prevent the root from rot and cause a decrease in production.
In the late stage of growth, sweet potato was sprayed with fertilizer, and its root absorption capacity was weakened. To prevent premature aging of stems and leaves and accelerate tuber enlargement, spraying fertilizer with foliar leaves can have a multiplier effect. The type of spray fertilizer is determined by the growing trend. Generally, the hilly land where the leaf vine grows weak, the plain sand thin place, or the land with premature deterioration, can spray 0.5% urea; the leaves with prosperous growth can spray 0.2% phosphoric acid. Potassium hydrogen solution; general field can be sprayed with 0.3 ~ 0.5% NPK mixed liquid 100 kg. Spraying time: generally 40 to 50 days before harvest, choose to spray on a sunny evening, spray once every 7 days, spray 2 or 3 times.
Scientific formula Fertilization sweet potato is a high-yielding crop. To exert its high-yield performance, it is necessary to apply sufficient fertilizer. The farming systems for sweet potato cultivation in southern provinces are mainly wheat, potato, and potato, and the main crops are heavy, and the soil is deficient in oxygen, phosphorus, and potassium. Therefore, the ratio of nitrogen, phosphorus and potassium in high-yielding fields is 1:0.5:3. Fertilizers should be dominated by basal fertilizers, and basal fertilizers generally account for 60% to 80% of total fertilizers. Applying basal fertilizers must be based on multiple application of coarse fertilizers, and sufficient phosphate fertilizer, potash fertilizer, and zinc fertilizer should be applied. Muping applied 3,000 kg of crude fertilizer, 15 kg of potassium sulfate, 25 kg of superphosphate, 1 kg of zinc sulfate, and 25-30 kg of ammonium bicarbonate. Nitrogen fertilizer is applied depending on the situation. Generally, it is applied more thinly and less fertilizer is applied. In order to achieve a high input, high output, high efficiency and a virtuous circle.
Early planting of sweet potatoes with early leaves can extend the growth period of sweet potatoes, and can fully utilize the rainy season from April to June, which is good for rooting and sprouting of sweet potato roots, especially for early planting of young and tender seedlings, rapid seedling growth, and early potato growth. The survival rate is high and there is a clear increase in production. When the seedlings are planted, they need to be deeply planed, watered, and covered with soil. Summer potato is generally inserted in late June.
Fertilizer-filled sweet potato is a hi potassium crop. In the tuber enlargement period, potash-based fertilizer should be used to irrigate the rhizosphere soil to meet the large demand for sweet potato in later period. Generally in late August with 1% potassium dihydrogen phosphate solution 100 ~ 150 kg per mu. For defertilization plots, 100 kg of NPK can be fed and poured along cracks. In case of continuous dry weather, water should be poured in a timely manner in places where conditions permit, but it should not be watered within 20 days before harvest so as not to reduce the resistance of the roots. In case of Qiuyu, it is necessary to drain the drain in time to prevent the root from rot and cause a decrease in production.
In the late stage of growth, sweet potato was sprayed with fertilizer, and its root absorption capacity was weakened. To prevent premature aging of stems and leaves and accelerate tuber enlargement, spraying fertilizer with foliar leaves can have a multiplier effect. The type of spray fertilizer is determined by the growing trend. Generally, the hilly land where the leaf vine grows weak, the plain sand thin place, or the land with premature deterioration, can spray 0.5% urea; the leaves with prosperous growth can spray 0.2% phosphoric acid. Potassium hydrogen solution; general field can be sprayed with 0.3 ~ 0.5% NPK mixed liquid 100 kg. Spraying time: generally 40 to 50 days before harvest, choose to spray on a sunny evening, spray once every 7 days, spray 2 or 3 times.
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