| 播前不同肥料基施对中早熟马铃薯LK99 氮素吸收规律的影响 |
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| 引用本文： | 罗爱花,陆立银,王一航,等.播前不同肥料基施对中早熟马铃薯LK99 氮素吸收规律的影响[J].长江蔬菜,2011(12):57-59. |
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| 作者姓名： | 罗爱花 陆立银 王一航 等 |
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| 作者单位： | 甘肃省农业科学院马铃薯研究所，甘肃兰州，730070 |
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| 基金项目： | 国家马铃薯产业技术体系(CARS-10)建设专项资金; 甘肃农业科学院院列项目“马铃薯优质高产栽培技术研究与产业化示范”(nky-0701) |
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| 摘 要： | 研究了播前常规肥料和综合养分基施对中早熟马铃薯LK99一级种养分吸收及产量的影响。试验结果表明,LK99植株生育期对N素吸收呈＂慢-快-慢＂的＂S＂型曲线。生育前期植株吸收的N素主要分配在叶片和茎秆中;出苗后55 d左右,N素在茎叶和块茎中的分配几乎各占一半;至成熟期,约有90%的N素贮存在块茎中。出苗后60 d左右是马铃薯N素需求关键期。综合养分处理明显提高了中早熟马铃薯LK99一级种的商品薯率、单株生产力及块茎产量,平均667 m2增产26%。
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| 关 键 词： | 中早熟 马铃薯 LK99 N素吸收 |
Effect of Different Fertilizer Basal Application before Sowing on Nutrient Absorption of Mid-maturity Potato LK99 |
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| LUO Aihua,LU Liyin,WANG Yihang,XIE Kuizhong,CHEN Fu.Effect of Different Fertilizer Basal Application before Sowing on Nutrient Absorption of Mid-maturity Potato LK99[J].Journal of Changjiang Vegetables,2011(12):57-59. |
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| Authors: | LUO Aihua LU Liyin WANG Yihang XIE Kuizhong CHEN Fu |
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| Institution: | LUO Aihua,LU Liyin,WANG Yihang,XIE Kuizhong,CHEN Fu(Institute of Potato,Gansu Academy of Agricultural Science,Lanzhou 730070) |
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| Abstract: | The large and medium and trace element fertilizer(integrated nutrient treatment) mixed used on nitrate uptake and yield of the early-maturity potato LK99 were studied.The results showed that the trend of potato LK99 plants on N absorption was slow-fast-slow as S curve.At the early stage,uptake of nitrogen of potato LK99 mainly distributed in leaves and stems,and around 55 d after emergence,N up taken of leaves was almost near to it of stem.To maturity,about 90% of the nitrogen up taken stored in tubers.Arou... |
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| Keywords: | Mid-early maturity Potato LK99 Nitrogen absorption |
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