辽宁省水稻主产区化肥减施潜力分析

宫亮,金丹丹,牛世伟,王娜,徐嘉翼,隋世江

Analysis of Chemical Fertilizer Application Reduction Potential for Paddy Rice in Liaoning Province

GONG Liang,JIN DanDan,NIU ShiWei,WANG Na,XU JiaYi,SUI ShiJiang

表1 不同稻作区化肥偏生产力及减肥潜力

Table 1 Fertilizer reduction potential and fertilizer partial productivity in different rice producing area

稻作区 Rice producing area 施肥量(kg·hm-2) 偏生产力PFP（kg·kg-1） 节肥潜力 Saving fertilizer potential (%) 推荐施肥 Optimized fertilization 习惯施肥 Conventional fertilization 推荐施肥 Optimized fertilization 习惯施肥 Conventional fertilization N P2O5 K2O N P2O5 K2O N P2O5 K2O N P2O5 K2O N P2O5 K2O 辽河三角洲 Liaohe delta 234 111 101 271 117 96 42.7 90.1 99.0 36.9 85.5 104.2 13.7 5.1 — 东南部沿黄海 Southeast 179 83 76 192 102 82 41.9 90.4 98.7 39.1 73.5 91.5 6.8 18.6 7.3 辽宁中北部 North-centra 210 80 91 211 81 95 42.9 112.5 98.9 42.7 111.1 94.7 0.5 1.2 4.2