不同施氮量对土壤无机氮素及烤烟干物质的影响
杨小虎1,2,李援农1,2,黄晔3,卢凯峰3
The Effect of Different Nitrogen Application Rates on Mineral Nitrogen in Soil and Dry Material of Flue-cured Tobacco
中国农村水利水电 . 2010, (10): 5 -8 .