马铃薯的养分需求

Nutrient Requirements for Producing Potato Tubers

在综合了大量国内外关于马铃薯植株需肥研究资料的基础上,运用Excel进行统计分析生产1 000 kg马铃薯块茎的植株需肥量及影响其需肥的因素。结果表明,概率较高的1 000 kg马铃薯需N、P2O5、K2O的区间分别是3.0～4.0 kg,1.00～1.50 kg,4.0～6.0 kg。影响马铃薯养分需求量的因素有土壤有机质含量、土壤pH值、年份、产量等。明确单位产量的马铃薯需肥量及其影响因素,以期对我国的马铃薯测土配方施肥提供依据,对马铃薯因环境条件的差异而确定施肥量提供有益的信息。

Based on the previous research results on potato plant nutrient requirements,the amount of nutrient demands for harvesting 1 000 kg of tubers and the possible factors which influence the values were discussed and evaluated.The results indicated that 3.0-4.0 kg N,1.00-1.50 kg P2O5 and 4.0-6.0 kg K2O were needed for producing 1 000 kg of tubers,and the factors influencing the nutrient requirements included soil organic matter content,soil pH,years and yields.Understanding fertilizer requirement of unit yield and influencing factors,in order to provide the evidence of potato soil testing and fertilizer recommendation,may provide the useful information for determination of fertilization rate for potatoes planted in various environments.