华北农学报2011，Vol.26Issue(1)：177-180,4.
内蒙古阴山北麓旱作马铃薯土壤氮、磷、钾丰缺指标研究
The Study on the Abundance and Deficiency Indices of Phosphorus and Potassium of Rainfed Potato in North Yinshan Area of Inner Mongolia
摘要
Abstract
The establishment of soil nutrient abundance index is the base of soil testing and fertilizer recommendation. From 2006 to 2008,198 rain fed potato 3414 field experiments were conducted in 8 counties of North Yinshn area,Inner Mongolia. The correlation between the soil nutrient concentration and the corresponding relative yield of potato tubers in different fertility levels was analyzed, soil nutrient abundance indexes of North Yinshan area was established initially ,and recommendation rates were also calculated from the fertilizer effect functions. The total soil N was classified as 5 degrees of very low( ＜0. 80 g/kg) ,low(0. 80 - 1.19 g/kg) ,medium( 1.19 - 2. 16 g/kg) ,high (2. 16 -2. 64 g/kg) and very high( ＞2. 64 g/kg) ,and the corresponding N fertilizer recommendation rates were as ＞ 8.0,8.0 - 6. 5,6. 5 - 4. 3,4. 3 - 3.6, ＜ 3.6 kg/667m2. Five Olsen P grades were as very low ( ＜ 4. 6 mg/kg), low (4. 6 -8.4 mg/kg) ,medium(8.4 -20. 7 mg/kg) ,high(20. 7 -28. 0 mg/kg) and very high( ＞28.0 mg/kg) ,corresponding P fertilizer(P: O5 ) recommendation rates were as ＞ 5.7,5.7 - 4. 0,4. 0 - 1.5,1.5 - 0. 6, ＜ 0. 6 kg/667m2 Five soluble K grades were as very low( ＜64 mg/kg) ,1ow(64 -93 mg/kg) ,medium(93 -161 mg/kg) ,high( 161193 rog/kg) and very high( ＞ 193 mg/kg) ,corresponding K fertilizer( K2 O) recommendation rates were as ＞4. 2,4.2-3.2,3.2-1.7,1.7-1.2, ＜1.2 kg/667m2.关键词
旱作/马铃薯/阴山北麓/丰缺指标/推荐施肥Key words
Rain fed potato/ North Yinshan area/ Soil nutrients/ Abundance index/ Fertilization recommendation分类
农业科技引用本文复制引用
张子义,郑海春,郜翻身,樊明寿..内蒙古阴山北麓旱作马铃薯土壤氮、磷、钾丰缺指标研究[J].华北农学报,2011,26(1):177-180,4.基金项目
农业部公益性行业专项(200803030) （200803030）
内蒙古自然科学基金项目(2009MS0302) （2009MS0302）
内蒙古自治区现代农牧业产业科技服务体系资助项目 （）
