摘要
应用温网室研究方法，对青海省４类主要农田土壤黑钙土、栗钙土、淡栗钙土和灰钙土的养分状况进行了实验室分析、吸附试验和温室盆栽试验。结果表明，上述３种方法能较好地评价各类土壤养分状况并能迅速准确地确定土壤养分的限制因子及其缺乏幅度。
According to greenhouse/screenhouse technique for nutrientsurvey studies which is provided by Potash and Phosphate Institute of Canada( PPIC)the studies of the nutrient status for Chernozem soil,Chostnut soil,Light chostnut soil and Podzolic calcareous soil,main four farmland soiI types in Qinghai,are conducted with laboratory analysis,sorption study and greenhouse basin planting experi-ment.The results indicated that the method is rapid and accurate to determine the limited factors and e-valuate nutrient status of soil.
出处
《西北农业学报》
CSCD
1994年第4期58-63,共6页
Acta Agriculturae Boreali-occidentalis Sinica
基金
加拿大钾磷研究所资助
关键词
土壤养分
限制因子
温网室研究
Soil nutrient
Limited factors
Screenhouse study
