~(15)N labelled nitrogen fertilizer

Demand for phosphorus fertilizer

deep-layer application of fertilizer

Deep application of N fertilizer

deep application of fertilizer

Conventional fertilizer application

controlled-release nitrogen fertilizer

controlled release nitrogen fertilizer CRNF

controlled- release nitrogen fertilizer

controlled release nitrogen fertilizer

Controlled release fertilizer application

Contribution rate of fertilizer

continuous fertilizer application

compound nitrogen fertilizer synergists

compound fertilizer with high nitrogen content

combining application organic fertilizer and chemi

combining application of organ-inorganic fertilizer

Combined application of Zn and nitrogen fertilizer

combined application of organic-inorganic fertilizer

combined application of organic manure and chemical fertilizer