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在威宁县对鱼腥草进行硫酸钾肥不同施用量试验,探讨鱼腥草的适宜钾肥施用量。结果表明:硫酸钾施用量为450 kg/hm2的鱼腥草茎叶、根茎产量最高;施硫酸钾450 kg/hm2、675 kg/hm2的处理和225 kg/hm2的处理之间鱼腥草茎叶、根茎产量差异不大;钾肥施用量增加有利于鱼腥草茎叶水浸出物的积累,还可增加根茎蛋白质和纤维素含量;脂肪和水溶性糖的含量则以施钾225~450 kg/hm2的处理较高。为兼顾鱼腥草产量与品质,建议在高寒山区,鱼腥草栽培中硫酸钾施用量为450 kg/hm2左右。
In Weining County of Houttuynia for different doses of potassium sulfate test to explore the appropriate amount of Houttuynia potash fertilizer. The results showed that the rhizome yield of Houttuynia cordata with 450 kg / hm2 potassium sulfate application was the highest, and the rhizome yield was the highest with 450 kg / hm2 potassium sulfate treatment and 225 kg / hm2 treatment. Leaf and rhizome yields were not significantly different. Increasing potassium application was beneficial to the accumulation of water extract from stem and leaves of Houttuynia cordata Thunb., But also increased rhizome protein and cellulose content. The content of fat and water-soluble sugar increased from 225 to 450 kg / hm2 higher treatment. To take into account the yield and quality of Houttuynia, it is recommended in the alpine mountains, Houttuynia cultivation of potassium sulfate is about 450 kg / hm2.