定西市半干旱区旱地马铃薯品种筛选及适应性研究

Screening and Adaptation Research of Dry Potato Varieties in Semi-arid Area of Dingxi City

为了探索适合定西市半干旱区旱地栽培的优良马铃薯品种,在定西市通渭县设置相应的品种比较试验,通过早播方式,对引进的一批中早熟性马铃薯专用型品种的物候期、生育期及产量进行研究.结果表明,克新6号、紫花白、早大白比对照新大坪增产,因其抗逆性强、适应性广,建议作为陇中地区半干旱旱地主栽中早熟品种进行推广应用;中薯5号、中薯8号、中薯3号建议在继续开展试验研究的基础上,作为搭配品种推广种植;台湾红皮、大西洋、夏坡蒂虽然比对照新大坪减产,但其表皮光滑、芽眼浅、干物质含量较高、菜用性强、薯形整齐、品质优,建议在水肥条件较好、土质疏松的川水地推广应用.

In order to explore the excellent potato varieties suitable for dry-land cultivation in the semi-arid area of Dingxi City,comparative tests were set up in Tongwei County of Dingxi City.Through early sowing method,the phenological period,growth period and yield of medium and early maturing potato varieties were studied.The results showed that the yields of Kexin 6,Zihuabai and Zaodabai were higher than that of Xindaping(CK).Because of their strong resistance and wide adaptability,they were suggested to be promoted and applied as the main varieties with medium and early maturity in the central semi-arid area of Gansu.It was suggested to promote Zhongshu 5,Zhongshu 8 and Zhongshu 3 as matching varieties on the basis of continuing the experimental research.Although the yields of Taiwanhongpi,Daxiyang and Xiapodi were less than that of Xindaping(CK),they had smooth skin,shallow eyes,higher dry matter content,strong vegetable utility,neat shape of potato and excellent quality.It was suggested to be popularized and applied in the stream land with better water and fertilizer conditions and loose soil.