紫硒甘薯富含有人体必需的硒元素,营养养价值高,用途广。近年来不断受到人们的青睐,栽培面积不断扩大。由于我们精心管理和不断摸索,已掌握了一些方法,供同行们参考。1施足底肥施肥掌握以基肥为主,追肥为辅,控氮、稳磷、增钾的原则。底肥每667米2施5米3有机肥,硫酸钾20~25千克,二铵15千克左右,尿素10 Purple selenium sweet potato contains rich selenium essential elements, nutritional value of high nutritional value, wide use. In recent years, people continue to be favored, growing area continues to grow. Due to our careful management and continuous exploration, we have mastered some methods for our colleagues to refer to. 1 Shi enough fertilizer to master base fertilizer, supplemented top dressing, nitrogen, phosphorus, potassium by the principle. Fertilizers every 667 meters 2 Shi 5 m 3 organic fertilizer, potassium sulfate 20 to 25 kg, 15 kg of diammonium, urea 10