施用有机肥对我国作物氮肥利用率影响的整合分析
任科宇1,段英华1(
),徐明岗1,张旭博2()
),徐明岗1,张旭博2()
Effect of Manure Application on Nitrogen Use Efficiency of Crops in China: A Meta-Analysis
REN KeYu1,DUAN YingHua1(),XU MingGang1,ZHANG XuBo2()
),XU MingGang1,ZHANG XuBo2()
图3. 不同施氮量下单施化肥（NPK）和有机肥配施（NPKM）的氮肥利用率差异
图a和c中黑色圆点和实线代表化肥对照组（NPK）,空心三角和虚线代表有机肥处理组（NPKM）。图b中点和误差线分别代表响应比及其95%的置信区间,如果误差线没有跨越零线表示处理和对照存在显著差异;括号内的数值和百分数分别代表样本数和施肥响应百分数
Fig. 3. Difference of NUE with nitrogen application rate between NPK and NPKM
Blackened circle and solid lines represent NPK, and open triangle and dashed lines represent NPKM (a, c). Dots with error bars denote the overall mean response ratio and 95% CI, respectively. The 95% CI that do not go across the zero line mean significant difference between treatment and control. The value and percent in parentheses represent independent sample size and percent response to fertilization, respectively(b)
