北方农业学报 ›› 2014, Vol. ›› Issue (5): 36-36.

• 土壤肥料研究与应用 • 上一篇    下一篇

固阳县旱作马铃薯氮磷钾施肥效应及推荐施肥

刘登荣[1] 云浩特[2] 王军[3]   

  1. [1]固阳县农业技术推广站,内蒙古固阳014200 [2]呼和浩特市赛罕区蔬菜副食品局,内蒙古呼和浩特010020 [3]呼和浩特市赛罕区农牧业局,内蒙古呼和浩特010020
  • 出版日期:2014-10-20 发布日期:2014-10-20
  • 通讯作者: 刘登荣
  • 作者简介:刘登荣(1960-),男,内蒙古固阳人,高级农艺师,长期从事农业技术推广工作。
  • 基金资助:
    国家测土配方施肥支撑项目:

Fertilizer Effect and Recommended Fertilization of NPK for Rainfed Potato in Guyang County

LIU Deng rong (Station for Popularizing Agricultural Technique of Guyang County,Guyang 014200,China)   

  • Online:2014-10-20 Published:2014-10-20

摘要: 为了指导固阳县旱作马铃薯推荐施肥,分析总结了固阳县进行的17项次旱作马铃薯测土施肥“3414”田间试验。结果表明,氮、磷、钾三要素的增产效果顺序依次为N〉P〉K,氮肥施肥效果最好,其次是磷、钾肥,尽管土壤钾素大多偏高,但施用钾肥都有效。说明阴山北麓旱作马铃薯限制产量的营养三要素仍然以氮素最为重要,施肥时仍应以氮、磷肥为主配合钾肥。从3个施肥梯度来看,随着施肥量加大,施肥的农学效率降低,施肥效益下降。平均来看,每 kg N增产马铃薯13.1kg,每 kgP2O5增产马铃薯24.2kg,每 kgK2O增产马铃薯21.3kg。根据氮、磷、钾肥料试验肥料效应方程可以得出旱作马铃薯地力产量<400kg/667m^2、400-600kg/667m^2、600-800kg/667m^2和>800kg/667m^2田块的最佳氮、磷、钾养分推荐用量,可以用于指导固阳县旱地马铃薯推荐施肥。

Abstract: For achieving the recommended fertilization to the rainfed potato in Guyang County,the 17 items dry farming potato soil-test-fertilization of '3414' farming experiments were summarized and analyzed.The results showed that the fertilization increasing effects order was N〉P〉K.N fertilizer had the best effect,then the P and K fertilizer.Although the soil has higher K content,K fertilizer has better significant synergies for soil.The results proved that N fertilizer was the most significant nutritive factor which make effects to rainfed potato production at north of Yin mountain.Furthermore,with fertilizing amount increased the fertilizing use rate and agronomic efficiency reduced at 3 fertilizer gradients.On average,to increase 13.1kg potato yield need 1 kg N fertilizer;1kg P2O5 for 24.2kg potato;1kg K2O for 21.3kg potato.According to the NPK fertilizer experiment of fertilizer effect equation,the soil productivity of rainfed potato were lower than 400kg/667m^2,between 400-600kg/667m^2 and 600-800kg/667m^2, and higher than 800kg/667m^2, respectively.These research results could give the recommended fertilization to rainfed potato in Guyang County.

中图分类号: 

  • S532