P、K肥及种植密度对重庆市深丘低山区马铃薯紫云1号花青素含量的影响

Effects of P,K Fertilizer and Density on Anthocyanin Content of Solanum tuberosum cv.Ziyun No.1 grown in Hilly Areas of Chongqing

彩色马铃薯花青素具有重要的营养价值,但目前栽培技术对花青素含量影响的研究还比较少。本研究采用L(93)4正交试验设计,研究了P、K肥和种植密度对彩色马铃薯品种紫云1号花青素含量的影响。研究结果表明:在本试验处理水平内,重庆市深丘低山区紫云1号获得花青素含量最多的最优方案是每公顷施纯P2O5 100 kg,KH2PO4喷施浓度3‰,最合理种植密度为60 000株/hm2。

There are great nutritional values of Anthocyanin in color potato,but very few researches have been conducted on the influence of cultivation techniques on anthocyanin content of potatoes.In this research,orthogonal experiment L9（34） was adopted to investigate the effects of fertilizer（P / K） and plant density on anthocyanin content of the color potato cv.Ziyun No.1.The results indicated that anthocyanin content of the color potato would be the highest in deep valley between low mountains areas of Chongqing when the application rate of P2O5 was 100 kg / ha,the application concentration of KH2PO4 was 3‰ and the plant density was 60 000 plants / ha.