Dissolved oxygen thiab hnub ci dej hauv dej irrigation

Lub molecular oxygen yaj hauv dej yog hu ua yaj oxygen thiab feem ntau yog sau npe D0. Tus nqi ntawm cov pa oxygen yaj hauv dej saum npoo yog 5-10mg / L. Thaum muaj cua txias thiab nthwv dej, cov pa yaj hauv dej tuaj yeem ncav cuag 14mg / L. Dissolved oxygen saturation = ntsuas tus nqi ntawm cov pa oxygen / dissolved oxygen saturation raws li kev ntsuas ntsuas * 100%, uas yog, 90% thiab siab dua, ntsuas tus nqi siab dua 7.5 mg / L, thiab qhov tsawg kawg yog 2 mg / L.
Tsawg-oxygendejyuav dhau los ntawm cov nroj tsuag thiab tshem tawm cov pa oxygen los ntawm cov hauv paus system. Ib yam li ntawd, nws yuav deplete cov pa oxygen hauv cov av. Cov nroj tsuag noj qab haus huv thiab noj qab nyob zoo av flora xav tau cov pa oxygen hauv ob qhov chaw.
Tsis muaj oxygen yaj hauv dej kuj tuaj yeem ua rau lwm yam teeb meem. Piv txwv li, nematodes nyiam cov av hypoxic. Irrigating nroj tsuag nrog dej tsawg-oxygen yuav coj lawv los ze rau saum npoo thiab yooj yim ua rau cov hauv paus hniav ntawm cov nroj tsuag.
Cov kev tshawb fawb tau pom tias txo cov concentration ntawm cov pa oxygen hauv cov hauv paus ib puag ncig ntawm cov nroj tsuag yuav txo cov peev xwm ntawm cov nroj tsuag kom nqus nitrogen thiab dej. Tsis muaj oxygen tuaj yeem ua rau cov hauv paus hniav puas. Nyob rau hauv tus txheej txheem ntawm adapting mus rau tsawg concentration ntawm yaj oxygen, cov metabolism hauv cov nroj tsuag tau hloov. Hypoxia hauv cov nroj tsuag hu ua internal hypoxia. Ib qho ntawm qhov tshwm sim yog qhov degradation ntawm sucrose, thiab cov nroj tsuag tig mus rau txoj kev txuag hluav taws xob los them rau qhov tsis muaj oxygen.
Lub photosynthesis ntawm phytoplankton yog lub ntsiab ntawm oxygen nyob rau hauv lub pas dej, feem ntau accounting rau 56% -80% ntawm cov pa oxygen; tus so yog los ntawm cua tshuab thiab nthwv dej, thiaj li hais tias cov pa oxygen nyob rau hauv cov huab cua yog ncaj qha yaj mus rau hauv lubdej. Advantageous 12-14mg / L
Heilongjiang: A 600-square-meterLub pas dej tanning tuaj yeem nce dej kub ntawm 3 mus rau 4 degrees thiab nce qoob loo ntau ntxiv los ntawm 6%.


Post lub sij hawm: Sep-03-2021

Daim ntawv thov

Underground pipeline

Underground pipeline

Irrigation System

Irrigation System

Kev Siv Dej

Kev Siv Dej

Cov khoom siv

Cov khoom siv