湖北农业科学 ›› 2018, Vol. 57 ›› Issue (22): 24-26.doi: 10.14088/j.cnki.issn0439-8114.2018.22.008

• 育种·栽培 • 上一篇    下一篇

氮、钾互作对甘薯生长发育规律的影响

柴沙沙1a, 雷剑1a, 王连军1a, 苏文瑾1a, 刘巧林2, 沈兴国1b, 杨新笋1a   

  1. 1.湖北省农业科学院,a.粮食作物研究所/湖北省甘薯工程技术研究中心/粮食作物种质创新与遗传改良湖北省重点实验室;b.经济作物研究所,武汉 430064;
    2.湖北省松滋市农业局,湖北 松滋 434000
  • 收稿日期:2018-07-16 出版日期:2018-11-25 发布日期:2019-12-19
  • 通讯作者: 杨新笋(1967-),男,湖北松滋人,研究员,主要从事甘薯育种与栽培研究,(电子信箱)yangxins013@163.com。
  • 作者简介:柴沙沙(1987-),女,山东淄博人,助理研究员,硕士,主要从事甘薯生理栽培研究,(电话)18162703521(电子信箱)chaishasha2008@126.com
  • 基金资助:
    国家现代甘薯产业技术体系建设项目(CARS-11-C-15); 湖北省农业科学院特色学科项目; 湖北省农业科技创新中心资助项目(2007-620-001-03); 湖北省技术创新专项(重大项目)(2017ABA149); 湖北省技术创新专项(重大项目)(2016ABA087)

Effects of Nitrogen and Potassium on the Growth and Development of Sweet Potato

CHAI Sha-sha1a, LEI Jian1a, WANG Lian-jun1a, SU Wen-jin1a, LIU Qiao-lin1b, SHEN Xing-guo2, YANG Xin-sun1a   

  1. 1a.Institute of Food Corps/Hubei Engineering and Technology Research Center of Sweetpotato/Hubei Key Laboratory of Food Crop Germplasms and Genetic Improvement;1b.Institute of Cash Corps, Hubei Academy of Agricultural Sciences,Wuhan 430064,China;
    2.Songzi Agriculture Bureau of Hubei, Songzi 434000,Hubei,China
  • Received:2018-07-16 Online:2018-11-25 Published:2019-12-19

摘要: 选取淀粉型甘薯[Ipomoea batatas(L.)Lam.]品种鄂薯9号为试验材料进行大田试验,采用二因素裂区设计,主区为不同氮肥水平,副区为不同钾肥水平,研究氮、钾互作对甘薯生长发育规律的影响。结果表明,不施用氮肥时的最佳施钾肥(硫酸钾)量为180 kg/hm2,与不施钾肥相比,增产7.2%;施氮(尿素)量为150 kg/hm2时,施钾肥量为180 kg/hm2产量最高,与不施钾肥相比,增产23.02%;施氮量为300 kg/hm2,施钾量为360 kg/hm2甘薯产量最高,与不施钾肥相比,增产14.16%。由此可知,不管氮肥的施用量是多少,只有在适当施用钾肥的情况下,甘薯才能获得高产。

关键词: 甘薯[Ipomoea batatas(L.)Lam.], 氮肥, 钾肥, 产量

Abstract: Using the starch type sweet potato(Ipomoea batatas) variety Eshu No.9 as the experimental material,the field experiment was carried out. The experiment adopted two-factor crack zone design,which the main area was different nitrogen fertilizer level and the secondary area was different potassium fertilizer level,to research the effects of interaction of nitrogen and potassium on growth and development of sweet potato. The results showed that,when no nitrogen fertilizer was applied,the optimal dosage potassium (potassium sulphate) fertilizer was 180 kg/hm2,which was 7.2% higher than that without potash fertilizer;when the amount of nitrogen(urea) applied was 150 kg/hm2,the yield was the highest of which the amount of potassium fertilizer was 180 kg/hm2,and the yield was 23.02% higher than that without potassium fertilizer; when the amount of nitrogen applied was 300 kg/hm2,the yield of sweet potato was the highest of which the amount of potassium applied was 360 kg/hm2,and the yield was increased by 14.16% compared with that no potassium fertilizer was applied. It shows that no matter how much nitrogen fertilizer is applied,only when the potassium fertilizer is properly applied, the sweet potato can obtain high yield.

Key words: sweet potato[Ipomoea batatas(L.)Lam.], nitrogen fertilizer, potassium fertilizer, yield

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