华北农学报 ›› 2014, Vol. 29 ›› Issue (S1): 368-372. doi: 10.7668/hbnxb.2014.S1.068

所属专题: 薯类作物 土壤肥料

• 论文 • 上一篇    

钾肥不同施用期对食用甘薯产量和品质的影响

后猛, 张允刚, 刘亚菊, 王欣, 唐维, 闫会, 马代夫, 李强   

  1. 江苏徐州甘薯研究中心, 江苏徐淮地区徐州农业科学研究所, 中国农业科学院甘薯遗传改良重点开放实验室, 江苏 徐州 221131
  • 收稿日期:2014-10-24 出版日期:2014-12-28
  • 通讯作者: 李 强(1971-),男,江苏铜山人,研究员,博士,主要从事甘薯遗传育种研究。张允刚(1968-),男,江苏邳州人,研究员,硕士,主要从事甘薯遗传育种研究。
  • 作者简介:后 猛(1981-),男,山东曹人,助理研究员,硕士,主要从事甘薯遗传育种研究。
  • 基金资助:
    江苏省科技支撑计划项目(BE2012336);现代农业产业技术体系建设专项资金项目(CARS-11);江苏省农业科技自主创新资金项目(CX(13)2032);江苏省支撑计划项目(BE2013437)

Effects of Applying Potassium at Different Stages on Yield and Quality of Edible Sweetpotato

KOU Meng, ZHANG Yun-gang, LIU Ya-ju, WANG Xin, TANG Wei, YAN Hui, MA Dai-fu, LI Qiang   

  1. Jiangsu Xuzhou Sweetpotato Research Center, Jiangsu Xuhuai Area of Xuzhou Institute of Agricultural Sciences, Key Laboratory of Biology and Genetic Improvement of Sweetpotato, Ministry of Agriculture, Xuzhou 221131, China
  • Received:2014-10-24 Published:2014-12-28

摘要: 为了探明适宜的钾肥施用量与施肥时期在提高甘薯产量和品质的同时,实现钾肥的高效利用和优化管理。以优质食用型甘薯徐薯32为试验材料,研究3个钾肥用量 (0,150,300 kg/hm2) 和3个施钾时期(生长早期即栽插后2周内、封垄期和块根膨大初期)处理对甘薯产量及营养成分的影响。结果表明:生长早期施用钾肥300 kg/hm2时,块根鲜薯和薯干产量获得最高值,分别为36 495.0,12 175.5 kg/hm2。钾肥不同施用期和施用水平对所测甘薯品质性状影响较大,甘薯生长早期追施钾肥有利于淀粉、麦芽糖和蔗糖的积累;低钾处理有利于淀粉及糖类物质的积累,而高钾处理则有利于蛋白质的积累。

关键词: 甘薯, 钾肥, 施用量, 施肥期, 产量, 品质

Abstract: In order to ascertain the appropriate potassium fertilization level and fertilization period,the field experiments were done to improve the yield and quality of sweetpotato,and its efficient utilization and optimization management at the same time.The effects of three K levels (0,150,300 kg/ha) and three fertilization periods (the early stage of growth period within 2 weeks after planting,sealing ridge stage and the early stage of storage root enlargement) treatment on sweetpotato yield and nutritional composition application on yield and nutritional compositions were studied using edible sweetpotato variety Xushu 32 as experimental material.The results showed that the maximum fresh(36 495.0 kg/ha) and dry(12 175.5 kg/ha) yield were observed under early application of K 300 kg/ha.The impact of K fertilization level and fertilization period on measured quality traits was obvious.Fertilizer application at early stage of growth period was beneficial to starch,maltose and sucrose accumulation.Low potassium level treatment contributed to starch and carbohydrate accumulation,high potassium level treatment contributed to protein accumulation.

Key words: Sweetpotato, Potassium fertilizer, Fertilization level, Fertilization period, Yield, Quality

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引用本文

后猛, 张允刚, 刘亚菊, 王欣, 唐维, 闫会, 马代夫, 李强. 钾肥不同施用期对食用甘薯产量和品质的影响[J]. 华北农学报, 2014, 29(S1): 368-372. doi: 10.7668/hbnxb.2014.S1.068.

KOU Meng, ZHANG Yun-gang, LIU Ya-ju, WANG Xin, TANG Wei, YAN Hui, MA Dai-fu, LI Qiang. Effects of Applying Potassium at Different Stages on Yield and Quality of Edible Sweetpotato[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2014, 29(S1): 368-372. doi: 10.7668/hbnxb.2014.S1.068.

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