皖南红黄壤丘陵区甘薯新品种生态适应性及钾肥用量研究初报

Preliminary Study on Ecological Adaptobility and the Amount of Potassium Application of New Sweet Potato Variety Grown in Yellow red soils in South Anhui

针对皖南红黄壤丘陵区甘薯品种单一，产量很低的现状，在选用优良品种的基础上，系统研究了新品种生态适应性及钾肥用量与产量形成的关系。结果表明：引进的品种皖薯３ 号、皖２６７ 比当地品种胜利百号分别增产３５．９％ 、３６．６％ ；施用钾肥能提高甘薯的产量，在皖南红黄壤丘陵地区钾肥适宜用量为９０ｋｇ／ｈｍ ２。

In order to solve the problem of the single variety and low yield of sweet potato in yellow red soils in Anhui.Fine sweet potato cultivars were selected,and the relationship of ecology adaptability of the new sweet potato variety and the amount of potassium application with yield formation was systematically studied.The results showed that yield of Wanshu No.3 and Wan 267 increased 35.9% and 36.6% more than that of ShengLi BaiHao.Patassium application can increase yield of sweet potato and the suitable amount of potassium application was 90kg/hm 2.