Kev sib raug zoo ntawm cov pa roj sulfuryl fluoride concentration thiab cov huab cua nruj ntawm lub tsev rau khoom

Feem ntau cov tshuaj tua kab tuaj yeem ua tiav cov nyhuv tua kab zoo ib yam los ntawm kev tswj lub sijhawm luv luv ntawm qhov concentration siab lossis lub sijhawm ntev ntawm qhov concentration qis. Ob qho tseem ceeb rau kev txiav txim siab qhov cuam tshuam tua kab yog qhov concentration zoo thiab lub sijhawm tswj hwm qhov concentration zoo. Kev nce ntxiv ntawm qhov concentration ntawm tus neeg sawv cev txhais tau tias tus nqi ntawm kev tua kab nce ntxiv, uas yog kev lag luam pheej yig thiab ua tau zoo. Yog li ntawd, kev ncua lub sijhawm tua kab kom ntau li ntau tau yog ib txoj hauv kev zoo los txo tus nqi tua kab thiab tswj cov nyhuv tua kab.

Cov txheej txheem ua haujlwm fumigation hais tias qhov ceev ntawm huab cua ntawm lub tsev rau khoom raug ntsuas los ntawm ib nrab-lub neej, thiab lub sijhawm rau lub siab kom poob ntawm 500Pa mus rau 250Pa yog ≥40s rau cov tsev rau khoom tiaj tus thiab ≥60s rau cov tsev rau khoom puag ncig ntiav kom ua tau raws li qhov yuav tsum tau ua fumigation. Txawm li cas los xij, qhov ceev ntawm huab cua ntawm cov tsev rau khoom ntawm qee lub tuam txhab cia khoom tsis zoo, thiab nws nyuaj rau ua tau raws li qhov yuav tsum tau ua cua nruj ntawm fumigation. Qhov tshwm sim ntawm cov tshuaj tua kab tsis zoo feem ntau tshwm sim thaum lub sijhawm fumigation ntawm cov nplej khaws cia. Yog li ntawd, raws li qhov ceev ntawm huab cua ntawm cov tsev rau khoom sib txawv, yog tias qhov concentration zoo tshaj plaws ntawm tus neeg sawv cev raug xaiv, nws tuaj yeem ua kom ntseeg tau tias muaj cov tshuaj tua kab thiab txo tus nqi ntawm tus neeg sawv cev, uas yog qhov teeb meem ceev ceev uas yuav tsum tau daws rau txhua qhov kev ua haujlwm fumigation. Txhawm rau kom lub sijhawm ua haujlwm zoo, lub tsev rau khoom yuav tsum muaj qhov ceev ntawm huab cua zoo, yog li kev sib raug zoo ntawm qhov ceev ntawm huab cua thiab qhov ceev ntawm tus neeg sawv cev yog dab tsi?

Raws li cov ntawv ceeb toom tseem ceeb, thaum lub tsev rau khoom cua nruj txog 188s, lub sijhawm ntev tshaj plaws ntawm sulfuryl fluoride tsawg dua 10d; thaum lub tsev rau khoom cua nruj yog 53s, lub sijhawm ntev tshaj plaws ntawm sulfuryl fluoride tsawg dua 5d; thaum lub tsev rau khoom cua nruj yog 46s, lub sijhawm luv tshaj plaws ntawm lub sijhawm ntev tshaj plaws ntawm sulfuryl fluoride tsuas yog 2d xwb. Thaum lub sijhawm fumigation, qhov siab dua ntawm sulfuryl fluoride concentration, qhov ceev dua qhov lwj, thiab qhov nrawm ntawm sulfuryl fluoride roj lwj sai dua li ntawm phosphine roj. Sulfuryl fluoride muaj permeability muaj zog dua li phosphine, ua rau lub sijhawm luv dua ntawm cov roj concentration dua phosphine.

Sulfuryl fluorideKev tua kab muaj cov yam ntxwv ntawm cov tshuaj tua kab sai. Qhov kev tua neeg ntawm ntau cov kab tsuag loj uas khaws cia xws li cov kab ntev-horned flat grain beetles, saw-saw grain beetles, corn weevils, thiab book lites rau 48 teev fumigation yog ntawm 2.0 ~ 5.0 g / m '. Yog li ntawd, thaum lub sijhawm fumigation, lubsulfuryl fluorideYuav tsum xaiv qhov concentration raws li hom kab hauv lub tsev rau khoom, thiab lub hom phiaj ntawm kev tua kab sai sai tuaj yeem ua tiav.

Muaj ntau yam uas cuam tshuam rau qhov kev lwj ntawmroj sulfuryl fluorideqhov sib sau ua ke hauv lub tsev rau khoom. Qhov cua nruj ntawm lub tsev rau khoom yog qhov tseem ceeb, tab sis nws kuj muaj feem cuam tshuam nrog cov yam xws li hom noob, cov khoom tsis huv, thiab qhov porosity ntawm pawg noob.