不同栽插方式对脱毒甘薯产量的影响

Effects on Free Sweet Potato[Ipomoea batatas(L.) Lam] Yield of Different Planting Patterns

[目的]研究6种不同栽插方式对甘薯[Ipomoea batatas(L.)Lam.]产量的影响,为脱毒甘薯的大面积高产栽培提供科学依据。[方法]以脱毒甘薯北京553为材料。6个处理分别为:A1不带根"┏┛"型栽插法(5节入土3节)、A2不带根倒"7"型栽插法(5节入土3节)、A3带根倒"7"栽插法(5节入土3节)、A4不带根"V"型栽插法(5节入土3节)、A5(CK)带根"V"型栽插法(5节入土3节,为目前山西地区甘薯生产上使用的栽插法)、A6不带根直插法(5节入土2节)。采用单因素完全随机试验,4次重复。[结果]在6种栽插方式中,A1栽插方式产量最高,折合产量达到32 901.45 kg/hm2,比A5(CK)增产21.5%,与其他处理间差异显著。[结论]"┏┛"型栽插法(5节入土3节)操作简捷,入土深度适宜,能合理利用垄层空间,产量高,适合山西地区大面积推广应用。

[ Objective ] The aim was to study the effects of different planting patterns on yield of sweet potato, and to provide scientific basis for high yield cultivation of free sweet potato in a large scale. [ Method] Free sweet potato cultivar was Beijing 553. Six treatments were as follows： A1, ＂ ＂ type of planting patters without root（3 of 5 joints burying under ground） ; A2, inverted ＂7＂ type of planting patters without root（3 of 5 joints burying under ground） ; A3, inverted ＂7＂ type of planting patters with root（3 of 5 joints burying under ground） ; A4, ＂V＂ type of planting patters without root （ 3 of 5 joints burying under ground） ; A5 （ CK）, ＂V＂ type of planting patters with root （ 3 of 5 joints burying under ground, local uses planting patterns at present） ; A6, planting directly without root（2 of 5 joints burying under ground）. The single factor and complete randomized test was designed with 4 repeated. [ Result] The yield of A1 planting patterns was the highest in six different planting patterns, reached 32 901.45 kg/hm2 , which increased by 23% compared with A5, had significant difference with the other planting patterns. [Conclusion] ＂ ＂ type ofplanting patters without root（3 of 5 joints burying under ground） have the characteristics of simple operation, suitable buried deep, reasonably utilizing the space of ridge layer, so its yield is high, suitable for application in a lager scale in Shanxi Area.