氮素有机肥替代对高粱产量和土壤性质的影响
王海燕, 毕如田, 聂萌恩, 霍晓兰, 于志勇, 刘平

Response of Sorghum Yield and Soil Properties to Organic Nitrogen Substitution of Chemical Fertilizer
Wang Haiyan, Bi Rutian, Nie Mengʼen, Huo Xiaolan, Yu Zhiyong, Liu Ping
图1 不同有机肥替代比例对土壤酶活性的影响
不同小写字母表示差异达到显著水平(P < 0.05)。
Fig.1 Effects of different organic fertilizer replacement ratios on soil enzyme activities
Different lowercase letters indicate significant difference (P < 0.05).