Ntaus cim: Perm Polytechnic

Ecologists los ntawm Perm Polytechnic University tau tsim ib lub tshuab uas yuav pab kho cov av fertility ntawm cov khoom siv roj av thiab cov hlau hnyav, ceeb toom ...

Peat thiab cov khoom raws li nws feem ntau siv hauv kev ua liaj ua teb thiab agrochemistry. Peat Cheebtsam tuaj yeem ...

Thaum lub sij hawm zus tau tej cov potash chiv, nyob rau theem ntawm nias, crushing thiab ziab, ib tug loj npaum li cas ntawm hmoov av yog tsim, uas yog hu ua ...