垄距和垄高对甘薯龙薯14号产量和机械收获性状的影响

目的]研究甘薯龙薯14号机械化收获配套高产栽培技术,为其推广应用提供技术支持。方法]采用两因素裂区试验方法,探讨不同垄距、垄高对甘薯薯块收获性状、产量的影响。结果]不同垄距、垄高都对甘薯产量、收获性状有显著的影响。提高垄高可增加单株结薯数和大中薯重比例,降低明薯率、伤薯率,单株薯重和产量先提高后降低;单株结薯数、单株薯重、大中薯重比例、产量、明薯率、伤薯率随垄距的减小而提高。结论]垄距80 cm、垄高30 cm处理的产量最高,为42.91 t/hm~2,其结薯数和大中薯比例也较高,明薯率为96.40%,较适合小型收获机收获。

Effects of Ridge Distance and Ridge Height on the Yield and Mechanical Harvest Traits of Sweet Potato Longshu 14

Objective] To research the high-yield cultivation technology of mechanized harvest of sweet potato Longshu 14,and to provide technical support for its extension.Method] The two factor split plot method was used to investigate the effects of ridge distance and ridge height on the yield and harvest trait of sweet potato.Result] Ridge width and height had significant effects on the yield and harvest trait of sweet potato.Increasing ridge height enhanced the number of tuber per plant and the proportion of large and medium-sized potato,reduced the unearthed potato rate and damaged potato rate,and firstly enhanced and then reduced the weight and yield per plant.As the ridge distance decreased,the number of tuber per plant, tuber weight per plant, proportion of large and medium-sized potato,yield,unearthed potato rate,and damaged potato rate all enhanced.Conclusion] The treatment of 80 cm ridge width and 30 cm ridge height had the highest yield of 42.91t/hm2.Its potato number and proportion of large-and medium-sized potato were relatively high,and the unearthed potato rate was 96.40%,which was suitable for mini-type potato harvester.