呼伦贝尔退化草原土壤养分调控的原理与技术

刘伟, 郝毅晴, 孙佳美, 王璟, 范冰, 郝建玺, 金那申, 潘庆民

Theory and application of soil nutrient regulation for degraded steppe in Hulun Buir, China

LIU Wei, HAO Yi-Qing, SUN Jia-Mei, WANG Jing, FAN Bing, HAO Jian-Xi, JIN Na-Shen, PAN Qing-Min

表1 呼伦贝尔退化草原土壤氮磷含量及对应氮磷施用量

Table 1 Soil nitrogen (N) and phosphorus (P) content in Hulun Buir degraded grassland and corresponding nitrogen and phosphorus application rates

土壤全氮含量 Soil total N content (g·kg-1) 土壤全磷含量 Soil total P content (g·kg-1) 氮施用量 N application rate (kg·hm-2) 磷施用量 P application rate (kg·hm-2) <1.5 <0.3 80-100 20-25 1.5-2.5 0.3-0.4 60-80 15-20 ≥2.5 ≥0.4 40-60 10-15