我国麦田有机肥替代化学氮肥的产量及经济环境效应
李永华1(),武雪萍2,何刚1(),王朝辉1()
Benefits of Yield, Environment and Economy from Substituting Fertilizer by Manure for Wheat Production of China
LI YongHua1(),WU XuePing2,HE Gang1(),WANG ZhaoHui1()

图1. 有机肥替代对小麦产量及其构成的影响
CF:单施化肥,SNM:有机肥替代。n是观测值的个数。图中的实线和虚线分别表示中值和平均值。盒状边界表示75%和25%的四分位数,帽表示第95和第5百分位数。处理间的星号代表差异显著。下同

Fig. 1. Effects of substituting fertilizer by manure on yield and its composition
CF: Chemical fertilizer, SNM: Substituting fertilizer by manure. n is the number of observations. Solid and dashed lines in this figure indicate the median and mean, respectively. The box boundaries indicate the 75% and 25% quartiles, and the whisker caps indicate the 95th and 5th percentiles. Differences are considered significant if there is an asterisk between chemical N fertilizer and substituting fertilizer by manure. The same as below