土壤磷吸持性
Phosphate retention of soils
土壤磷素
soil phosphorous
phosphorous situation in soil
Soil phosphorus
Soil
Fraction of phosphorus
Phosphorus
Soil phosphate
phosphorus of soil
soil p
31P NMR
fractions of phosphorus
the water level fluctuating zone
土壤磷素分布
soil phosphorus distribution
土壤磷素分级方法
soil phosphorous fractioning methods
土壤磷素活化剂
Soil phosphorus activator
土壤磷素状况
the status of soil phosphorus
中子-质子相互作用作用
neutron proton interaction
非线性桩土作用
nonlinear soil -pile interaction