烯效唑对甘薯产量和生长发育的影响

Effects of Uniconazole on the Yield and Growth of Sweetpotato

为了研究在高肥力条件下烯效唑对甘薯产量和生长发育的影响,以全国主栽品种商薯19为试验材料,进行了7个处理的对比试验。结果表明,喷施烯效唑所有处理的茎叶干质量、T/R均低于对照,鲜薯产量和薯干产量均高于对照,说明喷施烯效唑能延缓地上部生长,减少蔓长和茎叶质量,降低地上部能耗,有利于建立合理的密度群体,提高光合效率,达到增产的目的;试验中,以栽后50 d喷施22.5 g/hm^2烯效唑处理效果最为理想,其鲜薯产量为60 000 kg/hm^2,较对照增产25.72%,薯干产量为18 840 kg/hm^2,较对照增产28.17%,在商薯19生产中建议推广。

A comparative experiment was conducted on 7 treatments of cultivar Shangshu 19, the main nationally planted sweetpotato, to study the effect of uniconazole on the yield and growth of sweetpotato under the condition of high fertility. The results showed that the stem and leaf dry quality and T/R of all spraying uniconazole treatment were lower than that of the control, the fresh tuber yield and dry tuber yield were higher than that of the control. So uniconazole could postpone the stem and leaf growth, reduce stem length and leaf quality, decreased stem and leaf energy consumption, thus was conducive to grow a reasonable plants density, improve the photosynthetic efficiency and achieve the purpose of increasing production. In this experiment, the effect of the treatment of spraying uniconazole 2.5 g/hm2 0 days after transplanting is ideal, the tuber yield was 60 000 kg/hm2, increased by 25.72% compared with CK, the dry tuber yield was 18 840 kg/hm2, 28.17% higher than CK, it was recommended in Shangshu 19 production.