不同行距对机种甘蔗产量和抗旱性的影响

Effects of Different Row Space on Yield-and Drought Resistance of Mechanized Planting Sugarcane

以甘蔗品种柳城05/136为试验材料,研究机械化种植下,90cm、100cm、110cm、120cm行距对甘蔗产量和抗旱性的影响,为制定甘蔗生产全程机械化的农艺配套技术提供参考。结果表明:(1)甘蔗机械种植行距为110cm的蔗茎产量和含糖量最高,较90cm、100cm、120cm行距处理分别增产15.28%和6.01%、16.18%和13.49%、7.53%和11.33%,但处理间的差异不显著;(2)采用叶绿素含量、电解质相对外渗率、丙二醛含量、脯氨酸含量作抗旱性模糊综合评价结果,4个行距处理的抗旱性强弱排序依次为:110cm>120cm>90cm>100cm。(3)不同行距处理的农艺性状、抗旱性状、产量性状及甘蔗蔗糖分均没有随行距增加而表现出明显的变化趋势。

With the sugarcane variety Liucheng 05/136 as the experimental material, setting up 90cm, 100cm, 110cm and 120cm row space of cultivation under mechanization condition.Investigating the effects of different row space on yield and drought resistance characters. This research is designed to supply technical references for setting out complete agronomic technology under mechanization. The results show that： （1） 110cm spacing treatment achieved the best sugarcane yield and sugar content.It also increased about 15.28%, 6.01%, 16.18% of sugarcane yield, 13.49%, 7.53%, 11.33% of sugar content than 90cm, 100cm and 110cm spacing treatments, white the differences among all treatments are not obvious; （2）According to the results of drought resistance fuzzy comprehensive which include the chlorophyll content, electrolyte leakage rate, malondialdehyde content and proline content, the drought resitance order is：110cm〉120cm〉90cm〉100cm; （3） With the increasing row space, all treatments did not show obvious trends in agronomic traits, drought resistance characters, yield and sugar content.