基于农户施肥和土壤肥力的黑龙江水稻减肥潜力分析

彭显龙,王伟,周娜,刘海洋,李鹏飞,刘智蕾,于彩莲

Analysis of Fertilizer Application and Its Reduction Potential in Paddy Fields of Heilongjiang Province

XianLong PENG,Wei WANG,Na ZHOU,HaiYang LIU,PengFei LI,ZhiLei LIU,CaiLian YU

表2 黑龙江稻田土壤磷钾养分

Table 2 Soil available P and K of Paddy Rice in Heilongjiang

养分 Nutrient 最大值 Max 最小值 Min. 平均值±标准差 Average ± Standard deviation 变异系数 Coefficient of variation (%) 各级养分占比 Nutrient ratio at all levels (%) 样本数 n 低 Low 中 Medium 高 High 极高 Especially high 速效磷 Available phosphorus (mg·kg-1) 75.30 5.00 26.00±10.46 40.22 3.87 26.85 52.50 17.35 88183 速效钾 Available potassium (mg·kg-1) 433.00 56.00 138.14±50.94 7.57 4.89 22.28 41.19 33.09 86260