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1 磷钾合理施肥标准

Table 1 Rational fertilization standards for phosphorus and potassium

土壤养分等级 Soil nutrient level 校正系数 Correction coefficient 施磷量 Phosphorus application rate (kg P2O5·hm-2) 施钾量 Potassium application rate (kg K2O·hm-2) 低 Low 1.25 产量/100×100kg籽粒需磷量×1.25 Yield/100×Potassium content of 100 kg grain×1.25 产量/100×100kg籽粒需钾量×0.4×1.25 Yield/100×Phosphorus content of 100 kg grain×0.4×1.25 中Medium 1.00 产量/100×100kg籽粒需磷量×1 Yield/100×Potassium content of 100 kg grain×1 产量/100×100kg籽粒需钾量×0.4×1 Yield/100×Phosphorus content of 100 kg grain×0.4×1 高 High 0.75 产量/100×100kg籽粒需磷量×0.75 Yield/100×Potassium content of 100 kg grain×0.75 产量/100×100kg籽粒需钾量×0.4×0.75 Yield/100×Phosphorus content of 100 kg grain×0.4×0.75 极高 Especially high 0.50 产量/100×100kg籽粒需磷量×0.5 Yield/100×Potassium content of 100 kg grain×0.5 产量/100×100kg籽粒需钾量×0.4×0.5 Yield/100×Phosphorus content of 100 kg grain×0.4×0.5