Kev lag luam roj hmab yog ib qho ntawm cov kev lag luam tseem ceeb ntawm lub teb chaws kev lag luam. Nws tsis tsuas yog muab cov neeg siv txhua hnub uas yog qhov tseem ceeb rau lub neej txhua hnub, cov khoom siv roj hmab teeb xws li cov khoom siv kho mob, thiab ntau yam khoom siv roj hmab lossis roj hmab rau kev lag luam hnyav thiab kev lag luam tawm tshiab xws li mining, tsheb thauj mus los, kev tsim kho, machinery, electronics. , thiab lwm yam Nws tuaj yeem pom tias muaj ntau yam khoom siv hauv kev lag luam roj hmab, thiab kev lag luam rov qab yog qhov dav heev.
Nyob rau hauv xyoo tas los no, kev lag luam roj hmab tau ua tiav ntau txoj kev loj hlob. Cov sub-sectors tau nce tsis tu ncua, thiab cov roj hmab sub-sectors tshiab tau loj hlob sai. Tib lub sijhawm, kev lag luam roj hmab kuj muaj teeb meem xws li ib puag ncig, kev pab, kev puas tsuaj thiab kev tsim kho tshiab.
Xyoo 2004, tag nrho thaj tsam ntawm kev cog roj hmab hauv lub tebchaws yog 696,200 hectares, thaj tsam ntawm kev txiav yog 451,900 hectares, thiab cov khoom siv roj hmab qhuav yog 573,300 tons. Ntawm lawv, thaj chaw cog qoob loo ntawm cov roj hmab ua liaj ua teb yog 411, 000 hectares, thiab kev lag luam ntiag tug yog 285,200 hectares, suav txog 59.03% thiab 40.97% ntawm tag nrho cov roj hmab hauv lub tebchaws.
Xyoo 2005, Hainan tau raug kev txom nyem los ntawm qhov tsis tshua muaj drought ntawm 50 xyoo thiab kev puas tsuaj los ntawm cua daj cua dub uas tsis tau tshwm sim hauv ib puas xyoo, thiab cov khoom siv roj hmab ntuj raug cuam tshuam. Txhawm rau txhawm rau txhawm rau txhawm rau txhim kho lub peev xwm ntawm kev cog qoob loo hauv tsev thiab kev ua haujlwm, thiab ua kom nws tus kheej txaus, kev lag luam roj hmab hauv Suav teb tau ua kom tsis txhob muaj kev mob siab rau kev siv lub teb chaws kev nyab xeeb, kev txuag hluav taws xob, kev tiv thaiv ib puag ncig thiab kev tsim khoom huv si, thiab ua tiav cov txiaj ntsig tseem ceeb. . Hauv particular, cov roj hmab auxiliaries kev lag luam tau nquag kho cov qauv ntawm cov khoom, thiab ntsuab ib puag ncig tiv thaiv additives tau loj hlob ntau. Qhov kev faib ua feem ntawm ntau yam tshuaj antioxidants tau mus txog 80%, cov accelerators tau mus txog 50%, thiab kev tsim cov tshuaj lom neeg, tsim kev puas tsuaj thiab carcinogenic NOBS tau raug tswj tau zoo. Kev siv dav dav ntawm cov roj hmab pov tseg tau mus txog ntau dua 65%, thiab kev ua haujlwm thiab kev siv cov roj hmab rov qab thiab cov hmoov roj hmab tau nthuav dav.