长期施用有机肥
long-term application of organic fertilizer
不同有机肥
Different organic fertilizer
农业有机物料（废弃物）
Organic wastes and matters
有机物料循环
Recycling of organic matter
organic residue cycling
不同施氮水平
Different nitrogen levels
不同施肥处理
Different fertilization treatment
Different fertilization treatments
Fertilization
Upland red-soil
不同施肥量
Different fertilizer level
different fertilization amounts
different fertilization rates
不同施肥水平
Dfferent fertilization level
不同施肥条件
Different fertilization
different fertilizing levels
不同施肥制度
fertilizer regime
fertilization regimes
different fertilizer applications
长期不同施肥
Long-term different fertilization
long-term fertilization
肥料施用
Fertilizers application
fertilizer application
Zn three element complex mixed fertilizer
Fertilization
N
P