董环,娄春荣,史书强,王秀娟.降低收获期马铃薯块茎硝酸盐及土壤硝酸盐含量氮钾运筹方案研究[J].干旱地区农业研究,2012,30(5):138~142
降低收获期马铃薯块茎硝酸盐及土壤硝酸盐含量氮钾运筹方案研究
Effect of nitrogen and potassium application strategies on nitrate of topsoil and potato
  
DOI：10.7606/j.issn.1000-7601.2012.05.26
中文关键词:  N、K运筹  硝酸盐  交互作用  回归模型
英文关键词:strategy  nitrate  interaction  regression model
基金项目:中央财政农业科技推广示范项目“辽西北马铃薯高效复种技术集成与推广”〔GCNT-LN-09(2009年)〕；辽宁省科技厅重点实验室建设项目“辽宁省农产品质量安全检测及控制技术研究 ”(2008403013)
作者单位
董环 沈阳农业大学土地与环境学院， 辽宁 沈阳 110161； 辽宁省农业科学院环境资源与农村能源研究所， 辽宁 沈阳 110161 
娄春荣 辽宁省农业科学院环境资源与农村能源研究所， 辽宁 沈阳 110161 
史书强 辽宁省农业科学院环境资源与农村能源研究所， 辽宁 沈阳 110161 
王秀娟 辽宁省农业科学院环境资源与农村能源研究所， 辽宁 沈阳 110161 
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中文摘要:
      由施氮过量或肥料比例失调所引起的硝酸盐污染，给人类生存环境带来巨大风险，因此，研究肥料的合理施用量和配比对土壤及作物均具有重要 的现实意义。采用N、K两因素四水平完全方案，测定不同处理马铃薯块茎硝酸盐含量和耕层土壤硝酸盐含量；通过方差分析及回归模型分析，寻求马铃薯块茎硝酸盐和耕层土壤硝酸盐对N、K的响应规律，以及N、K交互作用对二者的影响。结果表明：为了获得土壤最低硝酸盐含量，施氮量应为151.65 kg/hm2，施钾量为194.025 kg/hm2；为了吸收较多的土壤硝酸盐，施氮量应为224.025 kg/hm2，施钾量为266.925 kg/hm2。
英文摘要:
      Excessive nitrogen or imbalance of fertilizer application during agricultural production makes nitrate pollution, which is the risk of the human environment. Therefore, the study of fertilizer application and a reasonable ratio and its effect on soil nitrate and crop nitrate have a great practical meaning. Using a complete experiment of two-factor of N and K with four-level, and through measuring potato nitrate and topsoil nitrate as well as through analysis of variance and regression analysis, the response rule of potato nitrate and topsoil nitrate on N and K and the interaction effect of the two factors on the nitrate were researched. The result showed that the application rate of nitrogen was 151.65 kg/hm2 and the application rate of potassium was 194.025 kg/hm2 in order to reach the lowest topsoil nitrate. The application rate of nitrogen was 224.025 kg/hm2 and the application rate of potassium was 266.925 kg/hm2 in order to absorb more soil nitrate.
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