Japanese chestnut sweet potato seedling cultivation technology
Japanese chestnut sweet potato seedlings began to supply, the potato skin is red and bright, uniform, shiny, smooth and delicate, the potato is white and yellow, the size of the potato is uniform, and there is chestnut fragrance after steaming. It is generally used for slicing and steaming. Processing potato sludge, fresh-keeping exports, baked potatoes, etc. In recent years, the domestic planting acre yield is generally around 4,000 kg, suitable for cultivation in most parts of the country.
This variety of chestnut sweet potato is long, and the spindle-shaped sweet potato is welcomed by the market, and the potato shape with round shape and excessive expansion in the middle has no market. The virus-free seedlings produced by the new method are long, spindle-shaped, uniform in size, bright in color, uniform in color, smooth and delicate in skin, and are high-quality sweet potatoes that are welcomed by the market. Only such quality can be marketed to occupy the market.
Tips:
1. Supply variety: Japanese chestnut sweet potato seedling
2, chestnut sweet potato seedlings delivery default SF express freight to pay, other delivery methods, please inform us in advance, when you send potato seedlings will be free for you to use the carton.
3, cultivation time: spring potato from early May to late May, summer potato from early June to late July. Please understand the cultivation time of your land, and don't delay the farming time.
4, delivery time: We generally ship about five days after you pay, please contact in advance!
The chestnut potato roots are deep and wide, and the stems can also take root and have a strong ability to absorb fertilizer. Although a certain amount of yield can be obtained on poor soil, in fact, sweet potato is a crop that needs to be fertilized. According to the research, the medium and high yield fields of about 3500-5000Kg of fresh potato per mu, 3.5kg of nitrogen (N), 1.8kg of phosphorus (P2O5) and 5.5kg of potassium (K2O) are absorbed from the soil for every 1000kg of sweet potato. ), the ratio of NPK is about 1:0.51:1.57. Chestnut potato is a potassium-producing crop, and the application of potassium fertilizer has obvious effects on yield and quality.
Chestnut potato is a chlorine-sensitive crop. When more than a certain amount of chlorinated fertilizer is applied, such as ammonium chloride and potassium chloride, not only will the starch content of the potato block be reduced, but also the potato block is not resistant to storage.
Applying the base fertilizer is the main measure for fertilizing chestnut potatoes. The base fertilizer should be based on high quality organic fertilizer. Sandy land, good permeability, large temperature difference between day and night, poor water retention and fertilizer retention, suitable for semi-humic organic fertilizer; clay soil should be applied to decomposed organic fertilizer. Chemical fertilizer can be used with 15-15-15 potassium sulphate compound fertilizer. The dosage is 50-75 kg per mu depending on the yield level and soil quality.
Before planting the chestnut potato seedlings, soak them in 2% potassium sulfate aqueous solution for one hour (the top leaves are exposed to the water surface), remove them and dry them, and transplant them, which can effectively improve the survival rate and promote early growth.
The period of topdressing should be flexible. If the soil is dry when planting, the temperature is low, and the potato seedlings are weak, the seedling fertilizer can be applied early. In the branching and potato-growing stage, the branching is late, the stems and leaves are not growing vigorously, and the leaves are small, and the plant fertilizer should be applied early. If the plant grows normally, it can be less fattened or not fertilized. Enter the rapid expansion period of potato chips. If the stems and leaves are prematurely degraded, the leaf area index will decrease rapidly. When the defoliation rate increases, the high-nitrogen compound fertilizer can be chased 1-2 times. The dosage is determined according to the climatic conditions and seedling conditions.
When the chestnut potato grows to about 1 meter long, in the morning without wind and dew, 50 kilograms of hay wood ash per acre is spread directly on the leaf surface, which can inhibit the growth of potato vines, promote the expansion of potato stalks, and effectively reduce mites. And other pest damage.
When the potato tubers are swollen and cracks appear on the ground, 0.2% potassium dihydrogen phosphate aqueous solution can be used to inject the cracks. Each plant is filled with about 1 kg of water, and the silt is sealed after the irrigation.
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