ʻOiai ke kuleana koʻikoʻi o ka sulfur i ka hoʻonui ʻana i nā mea kanu, ʻaʻole i loaʻa i kēia ʻāpana ka nānā pono ʻana. No nā makahiki he nui, ʻaʻole pilikia ka sulfur deficiency i ka hapa nui o nā mea kanu ʻuala.
I ka wā ma mua, ua hoʻolako ʻia nā mea kanu mineralized a me nā hoʻoheheʻe kiʻekiʻe-sulfur i nā pono o nā mea kanu. I loko o nā makahiki he 30 i hala iho nei, me ka hoʻoholo ʻana o ka Clean Air Act, ua hoʻemi nui nā hoʻokuʻu sulfur i kona loaʻa. ʻO ka mea ʻoiaʻiʻo, me ka nitrogen, phosphorus a me ka potassium, ʻo ka sulfur kahi meaʻai koʻikoʻi a he mea palena i ka hua a me ka maikaʻi o nā huahana mahiʻai.
Hiki i ka Sulfur ke hopena nui i ka maikaʻi a me ka nui o nā ʻuala ʻuala. He kemika koʻikoʻi ia no ke kūkulu ʻana i nā ʻakika amino, a no laila nā protein, a hiki ke hoʻoikaika i ka ulu ʻana o ka tuber, ka hoʻokumu ʻana i ka carbohydrate, ka pale ʻana i nā maʻi, a me ka hana chlorophyll. Hōʻike ka noiʻi ʻana he hopena koʻikoʻi kēia mea i ka ʻumekaumaha kikoʻī, ka mea maloʻo, ke kō a me ka maʻi starch, a me ka nui o ka tuber.
No ka nele o ka sulfur i kēlā me kēia pae o ka hoʻomohala ʻana i nā mea kanu hiki ke alakaʻi i ka emi ʻana o ka hua, pono ka hāʻawi mau ʻana o ka sulfur - mai ka puka ʻana mai o nā mea kanu a hiki i ka hopena o ka wā ulu. He mea nui ka loaʻa ʻana o ka sulfur i nā mea kanu ke makemake nui lākou.
Me ka pōloli sulfur, hoʻomaka nā piko e huli melemele mai ka piko. Ke neʻe mālie nei ka Sulfur ma nā kīʻaha o ka mea kanu, no laila ʻaʻole huki nā lau ʻuala mai nā lau kahiko a huli melemele i ka wā mua.
Hoʻokomo ʻia ka Sulfur i ka synthesis o nā amino acids methionine a me ka cysteine, nā huaora B1 (thiamine) a me B7 (biotin). Inā nele nā ʻōpala i ka sulfur, ʻaʻole lilo ka nitrogen i lawe ʻia e lākou mai ka lepo i ʻano protein.
I nā ʻuala i ulu ma lalo o nā kūlana o ka pōloli sulfur, piʻi ka ʻike o ka nitrates ma ka awelika o 22%. Ke emi iho nei ka ʻiʻo starch o nā ʻuala, ʻoi aku ka maikaʻi o kā lākou ʻono, a lōʻihi ka lōʻihi.
Hoʻopili nā mea kanu i kahi ʻāpana o ka sulfur mai ka lewa: ʻo ka microelement kahi ʻāpana o ka sulfur dioxide, i hoʻokuʻu ʻia i ka lewa e nā ʻoihana ʻoihana. Hoʻonui ka ua a me ka wai hoʻoheheʻe i ka lepo no ka ʻuala me ka sulfur. I loko o kahi ton o nā mea kanu organik (compost a i ʻole humus) - ma kahi o 0,5 kg o kahi trace element.
Akā, hōʻike ka hoʻomaʻamaʻa ʻana i ka wā e ulu ana i 1 ton o ka ʻuala, pono ka 2-4 kg o kahi microelement. Hoʻopau nā mea kanu i ka hapalua wale nō o kēia maʻi mai ka lewa, ka ua a me ka wai hoʻoheheʻe, a me ka compost.
Loaʻa ka Polysulfate (0-0-14-19.2S-12.2Ca-3.6Mg) mai ka polyhalite (mineral maoli). ʻO kēia fertilizer multi-component he kumu ia o ka potassium soluble, magnesium a me ka calcium e pili ana i nā sulfate me kahi haʻahaʻa chlorine haʻahaʻa.
ʻO ke ʻano o ka polysulfate extended release, ʻo ia hoʻi, e loaʻa i ka ʻuala nā meaʻai nui ʻehā (S 19.2%, K 14%, Mg 3.6%, Ca 12.2%) i loko o kēlā me kēia granule i ka wā o ka koi kiʻekiʻe, mai ka hoʻomaka ʻana o ka ulu ʻana o ka lau. i ka oo o ka opu.
Hoʻopili ka calcium i ka mea hoʻomomona i ke ʻano kemika o ka lepo, a me nā ʻano maikaʻi o nā ʻuala ʻuala. I loko o nā ʻāina a i ʻole nā ʻōnaehana hoʻoulu ʻana i ka wai kahi e pilikia ai ka maikaʻi o ka wai, hiki i ka hoʻohui ʻana i ka calcium i ka lepo ke kōkua i ka hoʻihoʻi ʻana i nā paʻakai i mālama ʻia. Hoʻohana ʻia ka polysulfate ma mua o ke kanu ʻana, i ke kanu ʻana a i ka wā o ka hoʻokumu ʻana o ke kualapa.
ʻEkolu ʻano nui o ka sulfur fertilizers.
- Sulfate-sulfur Loaʻa i nā fertilizers ka sulfur i hui pū ʻia me nā meaʻai ʻē aʻe e like me ka nitrogen a i ʻole ka potassium. Loaʻa ka fertilizer i ka ulu ʻana i nā mea kanu, a hemo koke ka sulphate-sulfur fertilizers. ʻO ka mea hoʻomomona sulfate-sulfur maʻamau he granular ammonium sulfate (20-0-0-24, 21-0-0-24, 19-2-0-22).
- ʻAmonium sulfate Hiki ke hoʻohui ʻia me nā fertilizers granular ʻē aʻe, akā pono e mālama ʻia i kona ʻano kino e hiki ai i ka hui ke noho homogeneous.
- pāhaʻi sulfate (0-0-50-18 a me nā mea hana ʻē aʻe) loaʻa pū a hana maikaʻi no nā legumes e like me ka alfalfa.
Aia kekahi mau mea kanu ʻē aʻe i loaʻa ka nui o ka sulfur sulfate, i loko o kahi hui ʻana a i ʻole i kahi huahana kūʻai.
- sulfur elemental. ʻO nā fertilizers granular (mai ka 0-0-0-90 a i ka 99), me kahi ʻano sulfur o 90 a 99% i ke ʻano elemental. ʻAʻole hiki ke hoʻohana pololei ʻia e nā mea kanu. ʻO ka mea mua, pono e hoʻololi ʻia e nā microorganism lepo.
ʻO nā fertilizers i loaʻa ka sulfur ma ke ʻano o ka thiosulfate, e like me ka wai ammonium thiosulfate (12-0-0-26) a me 15-0-0-20 pono e oxidized e nā microbes i loko o ka lepo i ke ʻano sulfate. Hiki ke hoʻohana ʻia ka fertilizer ma mua, i ka wā a i ʻole ma hope o ke kanu ʻana. Eia nō naʻe, ke hoʻopili ʻia i nā lau, hiki ke hana i ke ahi.
lepo holoholona hiki ke hāʻawi i nā mea kanu me ka sulfur a me nā meaʻai ʻē aʻe, akā pono e hoʻoholo ʻia ka ʻike o ka element a me ke koena me nā meaʻai ʻē aʻe me ka hoʻohana ʻana i nā loiloi kūikawā. No ka laʻana, he haʻahaʻa ka sulfur i loaʻa i kekahi mau slurries puaʻa i hoʻohālikelike ʻia me ka nitrogen.