Cultivation Techniques of Sweet Potato Guangxingshu 1

Guangguangshu No.1 (Guangshu 95-1/Guangshu 88-70) is a new sweet potato variety developed by the Crop Research Institute of Guangdong Academy of Agricultural Sciences. It passed the certification of Guangdong Province in March 2005.
1.Characteristics: The whole growth period of summer potato is 110-130 days. The color of the top leaves is purple, the leaves are shallow, the veins are purple, the stems are green and purple, the plant shape is semi-upright, the purple and red skins of the tubers, the purple color meat, the potato-shaped spindle are more beautiful, the storage is good, and the budding is good. The dry matter rate was 30.62%, the taste was 81.3 points, the starch rate was 19.51%, and the vitamin C content was 23.54 milligrams per hundred grams. In the potato pod disease. It is suitable for the cultivation of water and dry land in the province in summer and autumn.
2. Output performance: 2002 ~ 2003 to participate in the provincial quality group regional trial, the results of the two regional trials integrated, fresh potato average yield of 2375.0 kilograms, compared to the control species wide potato 111 yield 49.96%, increase production is extremely significant, dry potato average yield per mu 732.7 kg, an increase of 62.73%, an increase in production significantly.
3. Cultivation techniques: (1) Use potato chips without insect population as seed potato seedlings, planting tender seedlings after planting seedlings, and planting 3,000 to 3,500 planting acres; (2) Planting areas are preferably dry lands with irrigation capacity; Sandy soil is better, to avoid waterlogging in the field; (3) When the soil preparation starts, 1500 kg of organic fertilizer shall be applied to Mushi, 25 kg of phosphate fertilizer, 15 to 20 days after planting, and 8 to 10 kg of urea shall be applied for water and fertilizer application. About 50 days after planting, combined with cultivating loose soil and soil, combined with fertilization, Mushi potassium sulfate 30 kg, urea 10 kg or peanut bran 20 kg; (4) pay attention to prevention and treatment of yam disease.
(510640 Crop Research Institute of Guangdong Academy of Agricultural Sciences)

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