#Irrigationmanagement #waterconservation #energyefficiency #distributionuniformity #overheadirrigation #dripsystems #puvpressure #nozzleselection #systemmaintenance
Raws li ib tug neeg ua liaj ua teb, agronomist, ua liaj ua teb engineer, lossis tus tswv ua liaj ua teb, koj paub qhov tseem ceeb ntawm kev siv dej kom zoo rau cov qoob loo loj hlob thiab tawm los. Ib qho tseem ceeb ntawm kev tswj kav dej yog ua tiav daim ntawv thov sib xws, uas yog hais txog qhov sib npaug ntawm cov dej faib thoob plaws hauv thaj teb lossis thaj chaw loj hlob. Kev tsis sib haum xeeb tsis zoo tuaj yeem ua rau dhau los lossis hauv qab dej, uas tuaj yeem cuam tshuam tsis zoo rau cov nroj tsuag kev loj hlob thiab nce dej thiab siv zog.
Cov dej siv hluav taws xob siv hluav taws xob tshwj xeeb tshwj xeeb yog qhov nyuaj kom ua tiav qhov sib xws, tab sis txawm tias lub tshuab drip yuav tsum tau kuaj xyuas. Boom systems, troughs, ebb & dej nyab lub rooj zaum, thiab cov plag tsev tau nrov zuj zus vim tias lawv muab qhov sib xws zoo tshaj plaws. Kev tsis sib xws yog cuam tshuam los ntawm ntau yam xws li kev xaiv nozzle, qhov sib nrug thiab qhov siab, dej siab, cov yeeb nkab loj, thiab kev tu lub cev.
Ib txoj hauv kev los ntsuas kev siv dej tsis sib xws yog los ntawm Distribution Uniformity (DU), uas tau qhia raws li feem pua. Kev xeem DU muab cov duab pom ntawm yuav ua li cas siv dej thiab tuaj yeem pab txheeb xyuas thaj chaw uas tuaj yeem txhim kho.
Rau cov khoom siv nyiaj siv ua haujlwm, DU qhov kev sim suav nrog tso 16 lossis ntau dua qhov ncaj nraim ntawm cov kaus poom kom sib npaug sib npaug thoob plaws ib feem ntawm cov qoob loo. Tom qab khiav lub kaw lus kom txog thaum muaj tsawg kawg yog ib nti dej hauv cov kaus poom, cov dej los ntawm txhua lub khob yog nchuav rau hauv ib lub tog raj kheej lossis lub khob, thiab cov nyiaj tau sau tseg. Lub DU yog xam los ntawm kev faib qhov nruab nrab ntawm cov kaus poom qis tshaj plaws los ntawm qhov nruab nrab ntawm tag nrho cov kaus poom thiab muab faib los ntawm 100. A DU ntsuas ntau dua 90% yog qhov zoo, 80-90% yog qhov zoo, 70-80% yog qhov ncaj ncees, thiab tsawg dua. tshaj 70% yog pluag.
Rau cov tshuab drip, DU xeem suav nrog cov qauv tsim tawm los ntawm ntau tus emitters. Nyob ntawm daim ntawv thov thiab cov chaw tsim khoom, cov emitters tuaj yeem muaj qhov tso tawm los ntawm ½ txog 16 nkas loos / teev. Peb lossis plaub qhov chaw piv txwv yuav tsum raug xaiv rau txhua kab nyob rau hauv cheeb tsam, ib qho ze rau txhua qhov kawg, thiab ib lossis ob qhov sib npaug ntawm qhov chaw. Tom qab khiav lub kaw lus rau ib feeb, cov zis los ntawm txhua tus emitter raug kaw, thiab DU yog xam los ntawm kev faib cov zis rau qhov qis tshaj 25% ntawm cov emitters los ntawm qhov nruab nrab tus nqi rau tag nrho cov emitters thiab multiplying los ntawm 100.
Yog tias qhov kev ntsuam xyuas DU yog qhov ncaj ncees lossis tsis zoo, nws yog ib qho tseem ceeb uas yuav tsum tau ntxuav thiab xyuas cov ntxaij lim dej / cov ntxaij vab tshaus, nozzles lossis cov emitters uas muaj cov zis qis tshaj plaws. Kev tshuaj xyuas lub twj tso kua mis nrog cov ntsuas hauv-kab tawm tsam qhov siab ntawm qhov pib thiab qhov kawg ntawm cov kab sab nraud tuaj yeem pab txheeb xyuas cov dej xau, cov kav dej me me, lossis ntau lub nozzles / emitters.
Txhim kho daim ntawv thov dej sib xws tuaj yeem ua rau muaj kev siv dej ntau dua thiab siv zog, nrog rau cov qoob loo zoo sib xws thiab tawm los. Los ntawm kev sim thiab tswj xyuas koj cov dej ntws tsis tu ncua, koj tuaj yeem txheeb xyuas thaj chaw rau kev txhim kho thiab hloov kho kom zoo dua koj cov kev siv dej.