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Volume 25 Issue 4
Nov.  2011
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WU Wen-ming. Optimized cultivation of high-yield,high-quality sweet potato,Yanshu 5[J]. Fujian Journal of Agricultural Sciences, 2010, 25(4): 438-443.
Citation: WU Wen-ming. Optimized cultivation of high-yield,high-quality sweet potato,Yanshu 5[J]. Fujian Journal of Agricultural Sciences, 2010, 25(4): 438-443.
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Optimized cultivation of high-yield,high-quality sweet potato,Yanshu 5

  • Longyan Agricultural Research Institute, Longyan, Fujian 364000, China

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  • Received Date: May 25, 2010
  • Revised Date: July 20, 2010
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    • Abstract
  • A four factors five levers quadratic general rotary design was used to optimize the planting density and NPK application rates for high yield and high quality sweet potato,"Yanshu 5".A mathematic model was established:Y=53.76143+2.37583X1+3.04500X2+1.38583X3+1.89750X4-1.48932X12-1.07557X22-2.11557X32-2.45807X42+1.56750X1X2+0.29375X1X3+0.69875X1X4+0.71625X2X3+0.35125X2X4+0.23500X3X4.Impact of various factors on the yield of Yanshu 5 was in the order of K P density N.The optimized conditions to achieve a tuber yield of 48-53 thm-2 included: planting density at 57 900-62 600 hm-2 and applications of 46% urea at 321.75-401.4 kghm-2,12% super-phosphate at 400.5-483.9 kghm-2 and 50% potassium at 325.05-388.2 kghm-2.
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    • References (2)
  • 郭其茂,杨立明,何胜生,等.优质甘薯岩薯5号丰产生育特性研究[J].内蒙古农业大学学报,2004,25(2):35-39.
    唐启义,冯明光.DPS数据处理系统[M].北京:科学出版社,2007:290-294.
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