Duk da muhimmiyar rawar da sulfur ke takawa wajen samar da amfanin gona, wannan kashi ba koyaushe yake samun kulawar da ta dace ba. Shekaru da yawa, ƙarancin sulfur bai dame yawancin masu noman dankalin turawa ba.
A da, ma'adinan kwayoyin halitta da ma'adinan sulfur mai yawa sun ba da bukatun amfanin gona. A cikin shekaru 30 da suka gabata, tare da zartar da dokar tsaftar iska, iskar sulfur ya ragu sosai. Gaskiyar ita ce, tare da nitrogen, phosphorus da potassium, sulfur muhimmin sinadari ne kuma mai iyakancewa ga yawan amfanin gona da ingancin kayan aikin gona.
Sulfur na iya samun tasiri mai mahimmanci akan duka inganci da adadin dankalin turawa. Yana da mahimmancin sinadari don gina amino acid, don haka sunadaran, kuma yana iya rinjayar ci gaban tuber, samuwar carbohydrate, juriya da cututtuka, da samar da chlorophyll. Bincike ya nuna cewa wannan sinadari yana da tasiri mai mahimmanci akan takamaiman nauyi, busasshen kwayoyin halitta, sukari da abun ciki na sitaci, da girman tuber.
Tun da ƙarancin sulfur a kowane mataki na ci gaban shuka na iya haifar da raguwar yawan amfanin ƙasa, ana buƙatar samar da sulfur akai-akai - daga fitowar seedlings har zuwa ƙarshen lokacin girma. Yana da mahimmanci ga amfanin gona su sami damar samun sulfur lokacin da suka fi buƙata.
Tare da yunwar sulfur, saman fara fara rawaya daga saman. Sulfur yana motsawa a hankali a cikin tasoshin shuka, don haka ganyayen dankalin turawa ba sa cire shi daga tsofaffi kuma su juya launin rawaya da wuri.
Sulfur yana shiga cikin haɗin amino acid methionine da cysteine, bitamin B1 (thiamine) da B7 (biotin). Idan tubers rasa sulfur, da nitrogen tunawa da su daga ƙasa ba ya juya a cikin wani nau'i na gina jiki.
A cikin dankalin da aka girma a ƙarƙashin yanayin yunwar sulfur, abun ciki na nitrates yana ƙaruwa da matsakaicin 22%. A sitaci abun ciki na tubers kuma rage-rage, da dandano halaye deteriorate, kuma sun ripen ya fi tsayi.
Tsire-tsire suna shanye wani ɓangare na sulfur daga iska: microelement wani ɓangare ne na sulfur dioxide, wanda masana'antun masana'antu ke fitarwa zuwa cikin yanayi. Ruwan sama da narke ruwa kuma suna wadatar da ƙasa don dankali da sulfur. A cikin ton na takin gargajiya (takin ko humus) - kusan kilogiram 0,5 na alamar alama.
Amma aikin ya nuna cewa lokacin girma ton 1 na dankali, ana buƙatar kilogiram 2-4 na microelement. Tsire-tsire suna shan rabin wannan kashi ne kawai daga iska, ruwan sama da narke ruwa, da takin.
Polysulfate (0-0-14-19.2S-12.2Ca-3.6Mg) yana samuwa daga polyhalite (ma'adinai na halitta). Wannan nau'in taki mai yawa shine tushen tushen sulfate na potassium mai narkewa, magnesium da calcium tare da ƙarancin abun ciki na chlorine.
Siffar haɓakar haɓakar polysulfate tana nufin cewa mahimman abubuwan gina jiki guda huɗu (S 19.2%, K 14%, Mg 3.6%, Ca 12.2%) waɗanda ke cikin kowane granule za su kasance ga dankalin turawa yayin lokutan buƙatu mafi girma, daga farkon haɓakar ganye. zuwa tuber balaga.
Calcium a cikin taki yana rinjayar sinadarai na ƙasa, da kuma halayen halayen dankalin turawa. A cikin ƙasa ko tsarin noman ban ruwa inda ingancin ruwa zai iya zama matsala, ƙara calcium zuwa ƙasa zai iya taimakawa wajen dawo da gishiri da aka adana. Ana amfani da polysulfate kafin dasa shuki, a lokacin dasa shuki ko lokacin samuwar tudu.
Akwai manyan nau'ikan takin sulfur guda uku.
- Sulfate-sulfur Taki na dauke da sulfur hade da wasu sinadarai kamar nitrogen ko potassium. Ana samun taki a shirye don shuka amfanin gona, kuma takin sulphate-sulfur yana narkewa da sauri. Mafi yawan takin sulfate-sulfur shine granular ammonium sulfate (20-0-0-24, 21-0-0-24, 19-2-0-22).
- Sulfate na Ammonium ana iya haxa shi da sauran takin zamani, amma ya kamata a kula cewa yanayin jikinsa ya ba da damar cakuda ya kasance iri ɗaya ne.
- Potassium sulfate (0-0-50-18 da sauran abubuwan da aka tsara) ana samun su kuma suna aiki da kyau ga legumes kamar alfalfa.
Akwai wasu takin mai magani wanda ke ɗauke da ɗan adadin sulfur sulfate, ko dai a cikin cakuda ko a cikin kayan kasuwanci.
- elemental sulfur. Granular takin mai magani (daga 0-0-0-90 zuwa 99), tare da abun ciki na sulfur na 90 zuwa 99% a sigar farko. Ba za a iya amfani da shi kai tsaye da tsire-tsire ba. Na farko, dole ne a canza shi ta hanyar ƙananan ƙwayoyin ƙasa.
Taki dauke da sulfur a cikin nau'i na thiosulfate, kamar ruwa ammonium thiosulfate (12-0-0-26) da 15-0-0-20 dole ne su zama oxidized da microbes a cikin ƙasa zuwa sulfate form. Ana iya amfani da taki kafin, lokacin ko bayan dasawa. Duk da haka, idan aka shafa ga ganye, yana iya haifar da kuna.
takar dabba zai iya samar da tsire-tsire tare da sulfur tare da sauran kayan abinci, amma abun ciki na kashi da ma'auni tare da sauran abubuwan gina jiki dole ne a ƙayyade ta amfani da nazari na musamman. Misali, wasu slurries alade ba su da ƙarancin sulfur idan aka kwatanta da nitrogen.