Lub luag haujlwm tseem ceeb ntawm cov av organic teeb meem
1. Fertilizer thiab dej tuav yog cov nqa dej thiab cov chiv
2. Cov khoom thauj thiab lub zog ntawm cov kab mob
3. Txhawb kev tsim cov av aggregate qauv
Subdivided ceg ntawm cov organic teeb meem
1. Primitive state, xws li protein, rog, starch, cellulose, hemicellulose thiab lignin, thiab lwm yam.
2. Semi-transformed xeev, uas yog, ib lub xeev uas txawv ntawm cov qauv ntawm lub xeev qub
3. Humus, uas yog, cov khoom siv nrog cov av ua haujlwm tsim los ntawm kev hloov pauv ntawm cov kab mob thiab kev ua haujlwm ntawm lub cev thiab tshuaj lom neeg, qhov kev ua haujlwm yog hu ua ion txauv, cohesiveness thiab adhesion.
Nws yog humus ncaj qha rau cov nroj tsuag, thiab thawj ob yam khoom yuav tsum tau hloov mus rau hauv humus thiaj li yuav siv tau.
Qhov kev hloov pauv no yog decomposed los ntawm cov kab mob, uas haus 50% -70% ( xam ntawm 60%) ntawm cov pa roj carbon nyob rau hauv cov organic teeb meem thaum lub sij hawm mineralization thiab humification. Qhov hnyav ntawm carbon nyob rau hauv cov organic teeb meem yog 55% -60% (58% feem ntau yog xam rau kev kuaj sim). Yog li ntawd, qhov hnyav ntawm carbon poob los ntawm cov av microorganisms maj mam decomposing humus yog 58% x60% =34.8% ntawm cov pa roj carbon ntsiab lus uas tsis tau humified, thiab cov pa roj carbon ntsiab lus ntawm no yog tus nqi tseem ceeb ntawm cov pa roj carbon tam sim no. chiv.
Yog li ntawd, nyob rau hauv tib lub tsim nyog chiv, qhov feem ntawm humus nyob rau hauv cov organic teeb meem tau dhau los ua cov ntsiab lus tseem ceeb ntawm kev txiav txim tus nqi ntawm cov organic chiv.
Txoj hauv kev tseem ceeb kom nce av organic teeb meem
1. Straw rov qab mus rau teb
2. Nyom thiab ntsuab quav
3. Siv cov organic chiv
Cov txheej txheem saum toj no thaum kawg nce humus ntawm cov av, thiab qhov sib txawv ntawm cov organic teeb meem ntawm tib qhov hnyav ntawm cov organic chiv txiav txim seb tus nqi ntawm humus ntxiv rau cov av.
Yuav ua li cas nce av organic teeb meem los ntawm 1%?
Qhov tseem ceeb tshaj plaws ntawm cov av organic teeb meem yog photosynthesis, thiab lwm yam kev sib txuas yog kev hloov pauv ntawm daim ntawv thiab kev noj, uas tsis tuaj yeem nce ntxiv, yog li txawm hais tias yuav ua li cas, cov organic teeb meem yuav tsis raug conjured tawm ntawm huab cua nyias. Txawm hais tias nws yog nyom lossis nplooj litter, nws qhov kev pab cuam rau cov av organic teeb meem yuav tsis pub tshaj 0.1% ib xyoos twg, thiab qhov tseeb ntxiv tus nqi tseem me dua thaum noj cov kab mob hauv av thiab kev siv cov nroj tsuag. Xav tias tam sim no tus qauv ntawm kev siv tshuaj chiv ntxiv yog plundering organic teeb meem, qhov tseeb, cov organic teeb meem yog tsawg xyoo los ntawm lub xyoo.
Yog li ntawd, txoj kev ncaj ncees tshaj plaws thiab ceev ceev kom nce cov khoom organic yog kom cov organic chiv. Yuav ua li cas peb thiaj li nce cov organic teeb meem ntawm cov av los ntawm 1% los ntawm kev siv cov organic chiv? Yog hais tias lub thickness ntawm txheej tillage yog 0.2 meters thiab cov av density yog 1.3, ces qhov hnyav ntawm ib evkawj (667 square meters) ntawm txheej tillage yog 667x0.2x1. {10}}.42 tons. Tus qauv ntawm cov organic teeb meem nyob rau hauv cov organic chiv yog ntau tshaj los yog sib npaug zos rau 30%, thiab yog hais tias nws yog xam raws li 50%, cov chiv yuav tsum tau nce cov organic teeb meem los ntawm 1% ib acre ntawm av yog 173.42x1% ÷50% =3.47 tons.