摘要： 为了解决内蒙古阴山北麓区旱作马铃薯施肥过程中存在的关键技术问题，于2006-2008年在该地区进行了198个“3414”试验，通过对结果的统计分析，将内蒙古阴山北麓旱作马铃薯土壤全氮划分为极低(<0.80g/kg)、低(0.80～1.19g/kg)、中(1.19～2.16g/kg)、高(2.16～2.64g/kg)和极高(>2.64g/kg)5个等级，对应的推荐施氮量分别为>8.0、8.0～6.5、6.5～4.3、4.3～3.6、<3.6kg/667m2；速效磷含量划分的5个等级分别为极低(<4.6mg/kg)、低(4.6～8.4mg/kg)、中(8.4～20.7mg/kg)、高(20.7～28.0mg/kg)和极高(>28.0mg/kg)，对应的推荐施磷量(P2O5)分别为>5.7、5.7～4.0、4.0～1.5、1.5～0.6、<0.6kg/667m2；速效钾含量划分的5个等级分别为极低(<64mg/kg)、低(64～93mg/kg)、中(93～161mg/kg)、高(161～193mg/kg)和极高(>193mg/kg)，对应的推荐施钾量(K2O)分别为>4.2、4.2～3.2、3.2～1.7、1.7～1.2、<1.2kg/667m²。

关键词: 旱作, 马铃薯, 阴山北麓, 丰缺指标, 推荐施肥

Abstract: The establishment of soil nutrient abundance index is the base of soil testing and fertilizer reeommen-lotion. From 2006 to 2008，198 rain fed potato 3414 field experiments were conducted in 8 counties of North YinshanareaInner Mongolia. The correlation between the soil nutrient concentration and the corresponding relative yield ofpotato tubers in different fertility levels was analyzed soil nutrient abundance indexes of North Yinshan area was es-tablished initially and recommendation rates were also calculated from the fertilizer effect functions. The total soil Nwas classified as 5 degrees of very low(<0.80g/kg)，low(0.80－ 1.19 g/kg)，medium(1.19－ 2.16 g/kg).

Key words: Rain fed potato, North YinshanSoil nutrients, Abundance index, Fertilization recommendation

中图分类号: 

• S532