Ib qho nruab nrab-sized nruas tshuab kom qhuav rau ziab 50 t ca qe taub hau ib hnub yog sib sau ua ke.

Cov neeg yuav khoom tsuas yog nyob rau hauv cov qe kev lag luam, yuav tsum tau haus ib qho khoom ntawm cov qe tshiab txhua hnub. Txhawm rau txo tus nqi thiab nce nyiaj ntxiv, cov neeg no npaj rau lub qe qhuav kom ua mov thiab fertilizer.

TusTshuab Ntxhua Khaub Ncawsyog ntawm cov tsim muaj tshuab ziab kom qhuav vim yog nws qhov kev ua tau zoo, thiab muaj peev xwm ua kom qhuav, thiab kev tsim kho tshuaj, kev lag luam tshuaj, thiab kev lag luam tshuaj.