长期施肥紫色土有效磷变化及其对稻麦轮作产量的影响

任嘉欣,刘京,陈轩敬,张跃强,张勇,王洁,石孝均

Variation of Available Phosphorus in Purple Soil and Its Effects on Crop Yield of Rice-Wheat Rotation Under Long-Term Fertilizations

REN JiaXin,LIU Jing,CHEN XuanJing,ZHANG YueQiang,ZHANG Yong,WANG Jie,SHI XiaoJun

表2 长期施肥处理下稻麦轮作系统的磷肥利用率

Table 2 P utilization efficiency in rice-wheat rotation system under long-term fertilization treatments

处理 Treatment 水稻季 Rice 小麦季 Wheat 全年 Annual CK — — — N — — — NP 24.4±7.5b 12.3±2.4b 36.7±6.9b NK — — — PK 14.2±2.0c 7.4±2.0c 21.5±2.7c NPK 27.0±7.4a 17.4±3.1a 44.4±7.2a NPKM 27.7±4.9a 17.1±2.7a 44.8±5.4a 1.5NPKM 31.1±7.4a 19.9±2.7a 50.9±7.3a NPKS 32.9±6.5a 16.8±2.7a 49.6±5.2a M — — —