Isebenza nini futhi iphephile yini i-corn post-emergence herbicide

Isikhathi esifanele sokusebenzisa umuthi wokubulala ukhula singemva kwehora lesi-6 kusihlwa.Ngenxa yokushisa okuphansi kanye nomswakama ophezulu ngalesi sikhathi, uketshezi luzohlala isikhathi eside emaqabunga okhula, futhi ukhula lungakwazi ukumunca ngokugcwele izithako ze-herbicide.Kuyazuzisa ukuthuthukisa umphumela wokukhipha ukhula, futhi ngesikhathi esifanayo, ukuphepha kwezithombo zommbila kungathuthukiswa, futhi i-phytotoxicity akulula ukwenzeka.

Nini ukufaka ama-herbicides ngemuva kwezithombo zommbila

1.Ngenxa yokuthi umuthi wokubulala ukhula wangemva kokuhluma uyafuthwa, kuthatha amahora angu-2-6 ngenqubo yokumuncwa.Kula mahora angu-2-6, noma ngabe umphumela we-herbicide ulungile ngokuvamile uhlobene eduze nezinga lokushisa kanye nomswakama womoya.Futha ekuseni, noma emini nantambama lapho isimo sezulu somile.

2. Ngenxa yokushisa okuphezulu, ukukhanya okunamandla, kanye nokushintshashintsha ngokushesha komuthi owuketshezi, umuthi owuketshezi uzohwamuka ngokushesha ngemva kokufafaza, ukuze inani le-herbicide engena okhula lilinganiselwe, okuzoholela ekumunceni okunganele, ngaleyo ndlela kuthinte ukhula. umphumela we-herbicide.Lapho ufafaza ngesikhathi sokushisa okuphezulu nesomiso, izithombo zommbila nazo zijwayele ukuba ne-phytotoxicity.

3. Isikhathi esifanele sokufafaza singemva kwehora lesi-6 kusihlwa, ngoba ngalesi sikhathi, izinga lokushisa liphansi, umswakama uphezulu, uketshezi luhlala isikhathi eside emaqabunga okhula, futhi ukhula lungamunca ngokugcwele. izithako ze-herbicide., kuyasiza ekuqinisekiseni umphumela wokukhipha ukhula, futhi imithi yakusihlwa ingabuye ithuthukise ukuphepha kwezithombo zommbila, futhi akulula ukudala i-phytotoxicity.

4. Njengoba iningi lama-herbicides ngemuva kokuvela kommbila kuyi-nicosulfuron-methyl, ezinye izinhlobo zommbila ziyazwela kule ngxenye futhi zijwayele ukuba ne-phytotoxicity, ngakho-ke ayifanele amasimu ommbila atshala ummbila omnandi, ummbila we-waxy, uchungechunge lwe-Denghai nezinye. izinhlobo okufanele zifuthwe , ukugwema i-phytotoxicity, ngezinhlobo ezintsha zommbila, kuyadingeka ukuhlola bese ukhuthaza.

2. Usetshenziswa kanjani ama-post-emergence herbicides emmbila

1. Bheka ubukhulu botshani

(1) Lapho befutha imithi yokubulala ukhula ngemva kwezithombo zommbila, abalimi abaningi bacabanga ukuthi lapho ukhula luba luncane, kuba luncane ukumelana nokhula futhi kuba lula ukubulala utshani, kodwa akunjalo.

(2 Ngenxa yokuthi utshani buncane kakhulu, ayikho indawo yokwelapha, futhi umphumela wokuhluma awulungile. Iminyaka yotshani engcono kakhulu ingamaqabunga ama-2 nenhliziyo eyodwa kuya kumahlamvu ama-4 nenhliziyo eyodwa. Ngalesi sikhathi, ukhula lunesicelo esithile. Ukumelana nokhula akukukhulu, ngakho-ke umphumela wokukhipha ungcono.

2. Izinhlobo zommbila

Ngenxa yokuthi imithi eminingi yokubulala ukhula ngemva kokuvela kommbila i-nicosulfuron-methyl, ezinye izinhlobo zommbila ziyazwela kule ngxenye futhi zivame ukuba ne-phytotoxicity, ngakho-ke akunakwenzeka ukufafaza amasimu ommbila lapho kutshalwa khona ummbila omnandi, ummbila we-waxy, uchungechunge lwe-Denghai nezinye izinhlobo.Ukukhiqiza i-phytotoxicity, izinhlobo ezintsha zombila zidinga ukuhlolwa ngaphambi kokunyuswa.

3. Inkinga yokuxuba izibulala-zinambuzane

Ama-insecticide e-rganophosphorus akufanele afuthwe izinsuku ezingu-7 ngaphambi nangemva kokufafaza izithombo, ngaphandle kwalokho kulula ukubangela i-phytotoxicity, kodwa ingaxutshwa nezinambuzane ze-pyrethroid.Umuthi ugcwalisa inhliziyo.

4. Ukumelana nokhula ngokwalo

Eminyakeni yamuva nje, amandla okhula okumelana nokucindezeleka athuthukisiwe.Ukuze ugweme ukuhwamuka kwamanzi ngokweqile emzimbeni, ukhula alukhuli luqine futhi luqine, kodwa luba mpunga futhi lube mfushane, kanti ubudala botshani bangempela abuncane.Ukhula luvame ukumbozwa nge-fluff encane emhlophe emzimbeni wonke ukunciphisa ukuhwamuka kwamanzi.