连续秸秆还田对油菜水稻轮作土壤磷素有效性 及作物磷素利用效率的影响

王昆昆,廖世鹏,任涛,李小坤,丛日环,鲁剑巍

Effect of Continuous Straw Returning on Soil Phosphorus Availability and Crop Phosphorus Utilization Efficiency of Oilseed Rape-Rice Rotation

KunKun WANG,ShiPeng LIAO,Tao REN,XiaoKun LI,RiHuan CONG,JianWei LU

表1 2014—2018每年养分投入量

Table 1 Total annual inputs of N, P2O5 and K2O nutrients from 2014 to 2018 (kg·hm-2)

处理 Treatment 油菜季Oilseed rape 水稻季Rice 化肥 Chemical fertilizer (N-P2O5-K2O) 秸秆 Straw (N-P2O5-K2O) 化肥 Chemical fertilizer (N-P2O5-K2O) 秸秆 Straw (N-P2O5-K2O) NK 180-0-75 0-0-0 165-0-75 0-0-0 NPK 180-60-75 0-0-0 165-60-75 0-0-0 NPK+S 180-60-75 61.8-8.9-187.5 165-60-75 20.2-3.4-151.1