不同施肥方式对紫甘薯生长发育及产量的影响

目的]研究不同施用方式对紫甘薯生长发育及产量的影响。方法]采用田间试验方法,研究腐殖酸活性肥、甘薯专用肥、氮磷钾复合肥对紫甘薯生产发育及产量的影响。结果]与不施肥处理相比,3种施肥方式都可以增加分枝数、最长蔓长及蔓粗,促进紫甘薯地上部的长势,鲜薯产量增加54.8%~67.7%,薯干产量增加67.3%~78.6%,腐殖酸活性肥及甘薯专用肥均能显著提高紫甘薯的综合食用品质及花青素含量。结论]对于鲜食型品种及花青素型品种建议施用腐殖酸活性肥及甘薯专用肥。

Effects of Different Fertilization Methods on the Growth and Yield of Purple Sweet Potato

Objective]To study the effects of different fertilization methods on the growth and yield of purple sweet potato.Method]Field experiments were conducted to study the effects of humic acid,active fertilizer,sweet potato special fertilizer and nitrogen,phosphorus and potassium compound fertilizer on the production,yield and quality of purple sweet potato.Result]Compared with no fertilizer treatment,three fertilization can increase the number of branches,main stem length and stem diameter,promote the growth of the upper purple sweet potato,potato tuber yield increased 54.8%-67.7%,the yield increased 67.3%-78.6%,humic acid fertilizer and special fertilizer of sweet potato can significantly improve edible quality and anthocyanin content in purple sweet potato.Conclusion]For fresh varieties and varieties of anthocyanins suggested using humic acid active fertilizer and special fertilizer for sweet potato.