| 扦插密度及氮肥用量对心香甘薯产量与效益的影响 |
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| 引用本文： | 刘伟明,季志仙.扦插密度及氮肥用量对心香甘薯产量与效益的影响[J].长江蔬菜,2012(2):47-50. |
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| 作者姓名： | 刘伟明 季志仙 |
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| 作者单位： | [1]台州科技职业学院,浙江黄岩318020 [2]浙江省农科院作核所,浙江黄岩318020 |
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| 基金项目： | 农业部甘薯行业计划项目（nyhyzx07-012-12）,台州市科技计划项目（053TG02） |
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| 摘 要： | 试验采用二次饱和D-最优设计,研究了扦插密度、纯氮用量和氧化钾用量3个主要栽培因子对甘薯新品种心香产量及效益的影响。通过研究建立了心香产量和净产值回归模型,优化提出了供试农艺因子组合方案为667 m2扦插密度3 000株左右,追肥纯氮用量9～9.5 kg,基肥氧化钾用量9 kg左右。
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| 关 键 词： | 甘薯 心香 扦插密度 施肥技术 |
Effects of Planting Density and Nitrogen Fertilizer Amount on Yield and Economical Efficiency of Sweet Potato Xinxiang under Early Harvest |
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| LIU Weiming,JI Zhixian.Effects of Planting Density and Nitrogen Fertilizer Amount on Yield and Economical Efficiency of Sweet Potato Xinxiang under Early Harvest[J].Journal of Changjiang Vegetables,2012(2):47-50. |
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| Authors: | LIU Weiming JI Zhixian |
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| Institution: | 1.Taizhou Vocational College of Science and Technology, Huangyan, Zhejiang 318020; 2.1nsitution of Crop and Nuclear Application Technology, Zhejiang Academy of Agricultural Sciences ) |
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| Abstract: | The research studied the effects of the three main planting measures, concerning stem planting density, amount of pure nitrogen and KzO fertilizer on the yield and economical efficiency of the new sweet potato euhivar Xinxiang, adopting the quadratic saturation D-optimal design method. The yield and the net production value regression equation of Xinxiang had been researched and established separately. The perfect combination scheme of the testing agronomic factors was obtained as follows： the planting density was about 3 000 plants/667 m2, the amount of pure nitrogen for topdressing was 9-9.5 kg/667 m2, and the amount of K20 for basal fertilizer was about 9 kg/667 m2. |
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| Keywords: | Sweet potato Xinxiang Planting density Fertilizing technology |
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