【摘要】 为确定紫甘薯新品种“内渝紫2号”最佳种植株距，为新品种的示范推广提供技术依据，设置5种不同株距（20、25、30、35、40cm），对不同株距条件下紫甘薯“内渝紫2号”的植株性状、产量性状进行调查分析。结果表明：加大株距有利于提高茎蔓长度、分枝数、单株结薯数、单株鲜薯质量和大中薯比例；在30～40 cm范围内，缩小株距，有利于提高鲜薯产量、茎叶产量和薯干产量；30 cm株距时鲜薯产量和薯干产量最高，667 m~2产量分别为1 722.67 kg和480.63 kg。综合考虑，建议“内渝紫2号”栽培株距为30 cm，可获得较为理想的鲜薯产量。更多还原

【Abstract】 In order to determine the optimal plant spacing of the new purple sweet potato cultivar ’Neiyuzi No.2’ and provide technical basis for the demonstration and promotion of the new cultivar, five different plant spacings(20, 25, 30, 35, 40 cm) were set up to investigate and analyze the growth and yield traits of purple sweet potato ’Neiyuzi No.2’ under different plant spacing conditions. The results showed that increasing plant spacing was beneficial to increase the length of stem and vine, the number of branches, the number of roots per plant, the weight of fresh roots per plant and the proportion of large and medium roots. In the range of 30-40 cm, reducing plant spacing was beneficial to increase the yield of fresh potato, the yield of stem and leaf, and the yield of dried potato. The yield of fresh potato and dried potato were both the highest at 30 cm plant spacing, which were 1 722.67 kg per 667 m~2 and 480.63 kg per 667 m~2, respectively.Overall consideration, it was suggested that the plant spacing of ’Neiyuzi No. 2’ should be 30 cm to obtain ideal yield of fresh potato.更多还原