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3 水稻减肥潜力及化肥偏生产力

Table 3 Fertilizer reduction potential and fertilizer partial productivity of rice

养分类别 Nutrient category 施肥量 Fertilization amount (kg·hm-2) 偏生产力 PFP (kg·kg-1) 节肥潜力 Saving fertilizer potential (%) 习惯施肥 Conventional fertilization 优化施肥 Optimized fertilization 习惯施肥 Conventional fertilization 优化施肥 Optimized fertilization N 141 105 53 71 26 P2O5 56.6 41.6 133 180 27 K2O 51.6 35.9 145 209 30