长期施肥下华北潮土生产力演变及影响因素分析
王乐1,陈延华1,2,张淑香1(
),马常宝3,孙楠1,李春花1()
),马常宝3,孙楠1,李春花1()
Evolution of Fluvo-Aquic Soil Productivity Under Long-Term Fertilization and Its Influencing Factors
WANG Le1,CHEN YanHua1,2,ZHANG ShuXiang1(),MA ChangBao3,SUN Nan1,LI ChunHua1()
),MA ChangBao3,SUN Nan1,LI ChunHua1()
图3. 潮土区小麦和玉米的增产量与施化肥量的关系
Fig. 3. Relationships between crop yield increase and fertilizer application amount in fluvo-aquic soil
