{"id":764,"date":"2025-02-10T14:48:24","date_gmt":"2025-02-10T14:48:24","guid":{"rendered":"https:\/\/saphydrogels.com\/?p=764"},"modified":"2025-02-11T08:58:39","modified_gmt":"2025-02-11T08:58:39","slug":"irrigation-techniques-are-employed-worldwide","status":"publish","type":"post","link":"https:\/\/saphydrogels.com\/fi\/irrigation-techniques-are-employed-worldwide\/","title":{"rendered":"Kastelutekniikoita k\u00e4ytet\u00e4\u00e4n maailmanlaajuisesti"},"content":{"rendered":"

Kastelu on t\u00e4rke\u00e4 maatalouden k\u00e4yt\u00e4nt\u00f6, jossa vett\u00e4 levitet\u00e4\u00e4n hallitusti keinotekoisten j\u00e4rjestelmien avulla viljelykasvien vedentarpeen tyydytt\u00e4miseksi erityisesti alueilla, joilla sadem\u00e4\u00e4r\u00e4 on riitt\u00e4m\u00e4t\u00f6n. Menetelm\u00e4 on olennaisen t\u00e4rke\u00e4, jotta voidaan yll\u00e4pit\u00e4\u00e4 maailmanlaajuista elintarvikehuoltoa kasvavan v\u00e4est\u00f6n tarpeiden tyydytt\u00e4miseksi.<\/p>\n\n\n\n

Maailmanlaajuisesti k\u00e4ytet\u00e4\u00e4n erilaisia kastelutekniikoita, kuten:<\/h2>\n\n\n\n
\"\"<\/figure>\n\n\n\n
    \n
  1. Keskipistekastelu: T\u00e4ss\u00e4 menetelm\u00e4ss\u00e4 k\u00e4ytet\u00e4\u00e4n automaattisia sadettimia, jotka py\u00f6riv\u00e4t keskipisteen ymp\u00e4rill\u00e4 ja jakavat vett\u00e4 viljelykasveille ympyr\u00e4nmuotoisesti. Sadettimen putki tai puomi on tuettu viljelykasvin yl\u00e4puolelle torneilla, ja se liikkuu kiinteit\u00e4 ympyr\u00e4nmuotoisia ratoja pitkin, jotka toimivat pneumaattisesti, mekaanisesti, hydraulisesti tai s\u00e4hk\u00f6isesti. Vett\u00e4 annetaan tasaisesti, ja suuttimien koko kasvaa asteittain nivelest\u00e4 linjan loppuun. J\u00e4rjestelm\u00e4n liikenopeus m\u00e4\u00e4ritt\u00e4\u00e4 levitett\u00e4v\u00e4n veden syvyyden, joka tyypillisesti kattaa noin 130 hehtaaria ympyr\u00e4nmuotoisella alueella.<\/li>\n\n\n\n
  2. Kasteluj\u00e4rjestelm\u00e4: Kasteluj\u00e4rjestelm\u00e4: Suunniteltu kasteluj\u00e4rjestelm\u00e4, jossa vesi annostellaan suoraan kasvien juuristoon k\u00e4ytt\u00e4m\u00e4ll\u00e4 applikaattoreita, kuten suuttimia, p\u00e4\u00e4st\u00f6l\u00e4hteit\u00e4, huokoisia putkia tai rei'itettyj\u00e4 putkia. Menetelm\u00e4 toimii matalalla paineella, ja levittimet voidaan sijoittaa maanpinnalle tai sen alapuolelle.<\/li>\n\n\n\n
  3. Kourukastelu: Menetelm\u00e4ss\u00e4 k\u00e4ytet\u00e4\u00e4n osittaista pintavalutusta levitt\u00e4m\u00e4ll\u00e4 vett\u00e4 kouruihin tai riveihin, joiden kapasiteetti riitt\u00e4\u00e4 kastelulaitteiston s\u00e4ilytt\u00e4miseen. Sit\u00e4 k\u00e4ytet\u00e4\u00e4n yleisesti puhtaasti muokatuissa viljelykasveissa.<\/li>\n\n\n\n
  4. Painovoimainen kastelu: Vesi virtaa ja jakautuu painovoiman avulla t\u00e4ss\u00e4 kastelutyypiss\u00e4 ilman pumppausta.<\/li>\n\n\n\n
  5. Kiertokastelu: Kastelijat saavat veden m\u00e4\u00e4r\u00e4tyin v\u00e4liajoin eik\u00e4 jatkuvana virtana.<\/li>\n\n\n\n
  6. Kastelu: Vesi levitet\u00e4\u00e4n maanpinnan alapuolelle joko nostamalla pohjaveden pintaa l\u00e4hell\u00e4 juuristovy\u00f6hykett\u00e4 tai k\u00e4ytt\u00e4m\u00e4ll\u00e4 maahan upotettuja rei'itettyj\u00e4 tai huokoisia putkij\u00e4rjestelmi\u00e4, jotka purkautuvat suoraan juuristovy\u00f6hykkeeseen.<\/li>\n<\/ol>\n\n\n\n

    Veden s\u00e4\u00e4st\u00e4miseksi, sis\u00e4llytt\u00e4m\u00e4ll\u00e4 eritt\u00e4in imukykyinen polymeeri<\/a> voi olla \u00e4lyk\u00e4s strategia.<\/p>","protected":false},"excerpt":{"rendered":"

    Irrigation is a crucial practice in agriculture that involves the controlled application of water through artificial systems to meet the […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":true,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"site-sidebar-layout":"right-sidebar","site-content-layout":"","ast-site-content-layout":"normal-width-container","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[3],"tags":[26],"class_list":["post-764","post","type-post","status-publish","format-standard","hentry","category-blog","tag-super-absorbent-polymer"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/saphydrogels.com\/fi\/wp-json\/wp\/v2\/posts\/764","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/saphydrogels.com\/fi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/saphydrogels.com\/fi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/saphydrogels.com\/fi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/saphydrogels.com\/fi\/wp-json\/wp\/v2\/comments?post=764"}],"version-history":[{"count":0,"href":"https:\/\/saphydrogels.com\/fi\/wp-json\/wp\/v2\/posts\/764\/revisions"}],"wp:attachment":[{"href":"https:\/\/saphydrogels.com\/fi\/wp-json\/wp\/v2\/media?parent=764"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/saphydrogels.com\/fi\/wp-json\/wp\/v2\/categories?post=764"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/saphydrogels.com\/fi\/wp-json\/wp\/v2\/tags?post=764"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}