Ndi bwino kugwiritsa ntchito herbicides patatha masiku 40 mutabzala tirigu m'nyengo yozizira mutathira madzi amutu (madzi oyamba).Pa nthawiyi, tirigu ali pa siteji ya 4-leaf kapena 4-leaf 1- heart stage ndipo amalekerera kwambiri mankhwala ophera udzu.Kupalira kuyenera kuchitika pambuyo pa masamba 4.wothandizira ndiye wotetezeka kwambiri.

Kuonjezera apo, pa tsamba la 4-tsamba la tirigu, namsongole ambiri adatuluka, ndipo msinkhu wa udzu ndi wochepa.Tirigu alibe zolima komanso masamba ochepa, kotero ndikosavuta kupha udzu.Mankhwala a herbicides ndi othandiza kwambiri panthawiyi.Ndiye njira zopewera kupopera mankhwala a herbicides atirigu ndi ziti?
1. Onetsetsani kwambiri kutentha.
Mankhwala a herbicides amalembedwa kuti ndi okonzeka kugwiritsidwa ntchito pa 2°C kapena 5°C.Ndiye, kodi 2°C ndi 5°C zotchulidwa pano zikunena za kutentha pakagwiritsiridwa ntchito kapena kutentha kochepa kwambiri?
Yankho lake ndi lomaliza.Kutentha komwe kwatchulidwa apa kukutanthauza kutentha kochepa, zomwe zikutanthauza kuti kutentha kochepa kungagwiritsidwe ntchito pamwamba pa 2 ℃, ndipo kutentha sikuyenera kutsika kuposa masiku awiri musanayambe kugwiritsa ntchito mankhwala a herbicide.
2. Ndikoletsedwa kugwiritsa ntchito mankhwala pamasiku amphepo.
Kupaka mankhwala pamasiku amphepo kungachititse kuti mankhwala a herbicides atengeke mosavuta, zomwe sizingakhale zothandiza.Itha kufalikiranso ku mbewu zobiriwira kapena mbewu zina, zomwe zimayambitsa kuwonongeka kwa herbicide.Choncho, samalani kuti musagwiritse ntchito mankhwala ophera tizilombo pamasiku amphepo.
3. Ndikoletsedwa kugwiritsa ntchito mankhwala nyengo yoipa.
Ndikoletsedwa kugwiritsa ntchito mankhwala ophera udzu pa nyengo yoipa monga chisanu, mvula, matalala, matalala, kuzizira, ndi zina zotero. Tiyeneranso kusamala kuti tisakhale ndi nyengo yoopsa kwambiri isanayambe kapena itatha kugwiritsa ntchito mankhwala ophera udzu.Alimi akuyenera kulabadira zanyengo.

4. Osagwiritsa ntchito mankhwala a herbicide pamene mbande za tirigu zafowoka ndipo mizu yake yaonekera.
Nthawi zambiri, udzu umabwezedwa m'munda m'minda yatirigu m'nyengo yozizira, ndipo mindayo imakhala yotayirira.Ngati mukukumana ndi zaka ndi nyengo yachilendo, monga zaka za nyengo yotentha ndi chilala, muyenera kudziwa kuti mizu ya tirigu singathe kulowa mozama chifukwa nthaka ndi yotayirira kwambiri, kapena mbali ina ya mizu ikhoza kuwululidwa.Tirigu wamng'ono amatha kuyambitsa chisanu ndi kusowa kwa madzi.Mbeu za tirigu zotere ndizovuta kwambiri komanso zosalimba.Ngati mankhwala a herbicide agwiritsidwa ntchito panthawiyi, akhoza kuwononga tirigu mosavuta.
5. Osagwiritsa ntchito mankhwala ophera udzu tirigu akadwala.
M’zaka zaposachedwapa, matenda oyambitsidwa ndi mbewu kapena nthaka monga choipitsa cha tirigu, kuvunda kwa mizu, ndi kuwola kotheratu akhala akuchitika kawirikawiri.Asanayambe kugwiritsa ntchito mankhwala ophera udzu, alimi ayang'ane kaye ngati mbande zawo za tirigu zikudwala.Ngati tirigu akudwala, ndibwino kuti musagwiritse ntchito mankhwala ophera udzu.wothandizira.Ndibwino kuti alimi asamale kugwiritsa ntchito mankhwala apadera ophera tizilombo povala tirigu asanafese pofuna kupewa matenda.
6. Mukamagwiritsa ntchito mankhwala ophera udzu, onetsetsani kuti mwawathira kawiri.
Anzako ena a mlimi akufuna kupulumutsa mavuto ndikutsanulira mwachindunji mankhwala ophera udzu mu sprayer, ndipo ingopeza nthambi yoti muyisonkhezere.Njira yosakaniza iyi ndi yosagwirizana ndi sayansi.Chifukwa mankhwala ambiri ophera udzu amabwera ndi othandizira, othandizira amathandizira kuti alowemo ndipo nthawi zambiri amakhala owoneka bwino.Akathiridwa mwachindunji mu sprayer, akhoza kumira pansi pa mbiya.Ngati kugwedezeka kokwanira sikunachitike, othandizira angayambitse zotsatira.Mankhwala a herbicide omwe ali mu wothandizira sangathe kusungunuka, zomwe zingayambitse zotsatira ziwiri:

Imodzi ndi yakuti mankhwala onse ophera udzu akapopedwa, mbali ina ya herbicide imakhalabe yosasungunuka pansi pa mbiya, zomwe zimapangitsa kuti ziwonongeke;
Chotsatira china n’chakuti mankhwala ophera tizilombo m’munda watirigu amakhala opepuka kwambiri poyamba, koma mankhwala ophera udzu amene amaikidwa kumapeto kwake ndi olemera kwambiri.Chifukwa chake, mukamagwiritsa ntchito mankhwala ophera udzu, onetsetsani kuti mwatcheru ku dilution yachiwiri.
Njira yoyenera yokonzekera ndi njira yachiwiri yochepetsera: choyamba yonjezerani madzi pang'ono kuti mukonzekere yankho la mayi, kenaka muwathire mu sprayer yomwe ili ndi madzi enaake, kenaka yikani madzi okwanira, gwedezani pamene mukuwonjezera, ndikusakaniza. bwinobwino kuti kuchepetsa kuti chofunika ndende.Musathire mankhwalawa poyamba ndikuwonjezera madzi.Izi zipangitsa kuti wothandizirayo asungidwe mosavuta papaipi yoyamwa madzi ya sprayer.Kuchuluka kwa yankho lopoperapo koyamba kudzakhala kwakukulu ndipo ndikosavuta kuyambitsa phytotoxicity.Kuchuluka kwa yankho lopopera pambuyo pake kudzakhala kochepa ndipo zotsatira zopalira sizidzakhala bwino.Osatsanulira wothandizira mu sprayer yodzaza ndi madzi ambiri nthawi imodzi.Pachifukwa ichi, ufa wonyowa nthawi zambiri umayandama pamwamba pa madzi kapena umapanga tinthu tating'onoting'ono ndipo timagawidwa mosiyanasiyana.Sikuti zotsatira zake sizingatsimikizidwe, koma mabowo a nozzle amatsekedwa mosavuta popopera mankhwala.Kuphatikiza apo, njira yamankhwala iyenera kukonzedwa ndi madzi oyera.
7. Mankhwala a herbicides ayenera kugwiritsidwa ntchito mosamalitsa malinga ndi malamulo kuti asagwiritse ntchito mopitirira muyeso.
Alimi ena akathira mankhwala ophera udzu, amapopera kangapo m’madera okhala ndi udzu wokhuthala, kapena amapopera mankhwala otsalawo pamalo onse omalizira kuopa kuwononga.Njira imeneyi ingayambitse kuwonongeka kwa herbicide.Izi zili choncho chifukwa mankhwala ophera udzu ndi otetezeka ku tirigu pamlingo wabwinobwino, koma ngati atagwiritsidwa ntchito mopitirira muyeso, tirigu yemweyo sangathe kuwola ndipo amawononga tirigu.

8. Yang'anani molondola zochitika za chikasu ndi squatting mbande chifukwa cha herbicides.
Mukatha kugwiritsa ntchito mankhwala ena ophera udzu, nsonga zamasamba a tirigu zimasanduka zachikasu kwakanthawi kochepa.Izi ndi zachilendo chodabwitsa squatting mbande.Nthawi zambiri, chimatha kuchira chokha pamene tirigu asanduka wobiriwira.Chodabwitsa ichi sichingachepetse kupanga, koma chikhoza kulimbikitsa kuwonjezeka kwa tirigu.Zitha kulepheretsa tirigu kusokoneza kakulidwe kake ka uchembere chifukwa chakuchuluka kwa zomera, choncho alimi asamade nkhawa akakumana ndi vutoli.
9. Onetsetsani kwambiri kutentha.
Pomaliza, Ndikufuna kukumbutsa aliyense kuti popalira udzu wa tirigu, tiyenera kulabadira kutentha kwanyengo ndi chinyezi.Mukamagwiritsa ntchito mankhwala ophera tizilombo, kutentha kwapakati kuyenera kupitirira madigiri 6.Ngati nthaka ndi youma, tiyenera kulabadira kuchuluka kwa madzi.Ngati pali madzi osasunthika, amakhudza mankhwala a herbicide a tirigu.Mphamvu ya mankhwalawa ikugwiritsidwa ntchito.