“Hongdong†sweet potato was introduced from Japan. It is a red-sweet yellow-yellow sweet potato variety with high nutritional value and good taste (chestnut flavor). It is deeply loved by Japanese nationals and is the most promising for China’s long-term export processing to Japan. One of the varieties has a higher promotion value and a broader prospect.
We passed a one-year supporting cultivation experiment and research, with an average yield of 1,055 kg (667 square meters), a commodity rate of 39.9%, a maximum yield of 1,760 kg, and a commodity rate of 49.7%. Compared with summer corn and summer soybean, the economic benefits of 667 square meters were 470 yuan and 657 yuan respectively. Its main technical measures are as follows:
1. Concentrated nursery and bred bred bred because of high seed price and low number of introduced seedlings, using concentrated seedlings, concentrating scientific and technological forces, nurturing strong quacks, and expanding breeding times.
2. The use of clay loam soil ensures that the soil has high organic matter and the soil is deep, which provides a good foundation for the growth of sweet potatoes.
3. Fine soil preparation, reasonable fertilization after wheat harvest, deep plowing more than 25 cm, fine rake, ridging folder fertilizer, ridge distance 67 cm. More than 1,500 kilograms of soil-fertilizer for 667 square meters of soil, fertilizer application, 20-30 kg of potassium sulfate compound fertilizer and 10 kg of potassium sulfate.
4. Reasonable dense planting, oblique planting depth of 67 cm 25 cm, 667 square meters seedlings 4000 strains. Inclined and deep planting to ensure that the commodity rate reached more than 35%, planted on June 12~23.
5. Field management planted seedlings after 3 days. Grasping early cultivating stalks of grass will help ease root growth. 30 to 40 days Shun Man, planted 50 days later, spraying Sedazolyl 1000 times to control the stem vine growers, promote vines, prohibit the vine. In combination with pest and disease-fighting, 1% urea and 0.2% potassium dihydrogen phosphate fertilizer are applied to supplement nutrients to prevent premature aging, thereby increasing yield and commodity yield.
6. Timely harvested seed potatoes harvested before frost. Due to the high temperature this autumn, the prices of potatoes will be delayed until early November.
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