JP2007091553A - メチロール尿素重合肥料を原料として用いる化成肥料及びその製造方法 - Google Patents
メチロール尿素重合肥料を原料として用いる化成肥料及びその製造方法 Download PDFInfo
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- 239000003337 fertilizer Substances 0.000 title claims abstract description 132
- VGGLHLAESQEWCR-UHFFFAOYSA-N N-(hydroxymethyl)urea Chemical compound NC(=O)NCO VGGLHLAESQEWCR-UHFFFAOYSA-N 0.000 title claims abstract description 49
- 239000000126 substance Substances 0.000 title claims abstract description 35
- 238000004519 manufacturing process Methods 0.000 title claims description 20
- 238000006116 polymerization reaction Methods 0.000 title abstract description 20
- 239000002994 raw material Substances 0.000 title description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 48
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 24
- 150000007522 mineralic acids Chemical class 0.000 claims abstract description 11
- 150000007524 organic acids Chemical class 0.000 claims abstract description 11
- 150000003839 salts Chemical class 0.000 claims abstract description 10
- 238000001035 drying Methods 0.000 claims abstract description 6
- 239000002253 acid Substances 0.000 claims description 24
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 21
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 15
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 15
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 12
- FERIUCNNQQJTOY-UHFFFAOYSA-N Butyric acid Chemical compound CCCC(O)=O FERIUCNNQQJTOY-UHFFFAOYSA-N 0.000 claims description 10
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 10
- XBDQKXXYIPTUBI-UHFFFAOYSA-N dimethylselenoniopropionate Natural products CCC(O)=O XBDQKXXYIPTUBI-UHFFFAOYSA-N 0.000 claims description 10
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 claims description 10
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 claims description 10
- QJZYHAIUNVAGQP-UHFFFAOYSA-N 3-nitrobicyclo[2.2.1]hept-5-ene-2,3-dicarboxylic acid Chemical compound C1C2C=CC1C(C(=O)O)C2(C(O)=O)[N+]([O-])=O QJZYHAIUNVAGQP-UHFFFAOYSA-N 0.000 claims description 8
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 8
- 239000004021 humic acid Substances 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 6
- BJEPYKJPYRNKOW-REOHCLBHSA-N (S)-malic acid Chemical compound OC(=O)[C@@H](O)CC(O)=O BJEPYKJPYRNKOW-REOHCLBHSA-N 0.000 claims description 5
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 claims description 5
- FEWJPZIEWOKRBE-JCYAYHJZSA-N Dextrotartaric acid Chemical compound OC(=O)[C@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-JCYAYHJZSA-N 0.000 claims description 5
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 5
- KDYFGRWQOYBRFD-UHFFFAOYSA-N Succinic acid Natural products OC(=O)CCC(O)=O KDYFGRWQOYBRFD-UHFFFAOYSA-N 0.000 claims description 5
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 claims description 5
- BJEPYKJPYRNKOW-UHFFFAOYSA-N alpha-hydroxysuccinic acid Natural products OC(=O)C(O)CC(O)=O BJEPYKJPYRNKOW-UHFFFAOYSA-N 0.000 claims description 5
- KDYFGRWQOYBRFD-NUQCWPJISA-N butanedioic acid Chemical compound O[14C](=O)CC[14C](O)=O KDYFGRWQOYBRFD-NUQCWPJISA-N 0.000 claims description 5
- 235000019253 formic acid Nutrition 0.000 claims description 5
- 239000004310 lactic acid Substances 0.000 claims description 5
- 235000014655 lactic acid Nutrition 0.000 claims description 5
- 239000001630 malic acid Substances 0.000 claims description 5
- 235000011090 malic acid Nutrition 0.000 claims description 5
- 229910017604 nitric acid Inorganic materials 0.000 claims description 5
- 235000019260 propionic acid Nutrition 0.000 claims description 5
- IUVKMZGDUIUOCP-BTNSXGMBSA-N quinbolone Chemical compound O([C@H]1CC[C@H]2[C@H]3[C@@H]([C@]4(C=CC(=O)C=C4CC3)C)CC[C@@]21C)C1=CCCC1 IUVKMZGDUIUOCP-BTNSXGMBSA-N 0.000 claims description 5
- 239000011975 tartaric acid Substances 0.000 claims description 5
- 235000002906 tartaric acid Nutrition 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 12
- 230000001737 promoting effect Effects 0.000 abstract 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 16
- 230000004720 fertilization Effects 0.000 description 16
- 239000002689 soil Substances 0.000 description 14
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 9
- 230000033558 biomineral tissue development Effects 0.000 description 8
- 239000004202 carbamide Substances 0.000 description 8
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 7
- 235000011941 Tilia x europaea Nutrition 0.000 description 7
- 150000007513 acids Chemical class 0.000 description 7
- 239000004571 lime Substances 0.000 description 7
- 229910019142 PO4 Inorganic materials 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 6
- 238000005469 granulation Methods 0.000 description 6
- 230000003179 granulation Effects 0.000 description 6
- 239000010452 phosphate Substances 0.000 description 6
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 6
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 5
- 235000008429 bread Nutrition 0.000 description 5
- YYRMJZQKEFZXMX-UHFFFAOYSA-N calcium;phosphoric acid Chemical compound [Ca+2].OP(O)(O)=O.OP(O)(O)=O YYRMJZQKEFZXMX-UHFFFAOYSA-N 0.000 description 5
- 239000001768 carboxy methyl cellulose Substances 0.000 description 5
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 5
- 239000008112 carboxymethyl-cellulose Substances 0.000 description 5
- 239000008187 granular material Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000001103 potassium chloride Substances 0.000 description 5
- 235000011164 potassium chloride Nutrition 0.000 description 5
- 239000000047 product Substances 0.000 description 5
- 239000002426 superphosphate Substances 0.000 description 5
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 4
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 4
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 4
- 229910052698 phosphorus Inorganic materials 0.000 description 4
- 239000011574 phosphorus Substances 0.000 description 4
- 239000011591 potassium Substances 0.000 description 4
- 229910052700 potassium Inorganic materials 0.000 description 4
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 description 3
- 229910052921 ammonium sulfate Inorganic materials 0.000 description 3
- 235000011130 ammonium sulphate Nutrition 0.000 description 3
- 239000000440 bentonite Substances 0.000 description 3
- 229910000278 bentonite Inorganic materials 0.000 description 3
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- IKHGUXGNUITLKF-UHFFFAOYSA-N Acetaldehyde Chemical compound CC=O IKHGUXGNUITLKF-UHFFFAOYSA-N 0.000 description 2
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 2
- AMIMRNSIRUDHCM-UHFFFAOYSA-N Isopropylaldehyde Chemical compound CC(C)C=O AMIMRNSIRUDHCM-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 2
- 229920001807 Urea-formaldehyde Polymers 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 2
- 229910021529 ammonia Inorganic materials 0.000 description 2
- LFVGISIMTYGQHF-UHFFFAOYSA-N ammonium dihydrogen phosphate Chemical compound [NH4+].OP(O)([O-])=O LFVGISIMTYGQHF-UHFFFAOYSA-N 0.000 description 2
- 229910000387 ammonium dihydrogen phosphate Inorganic materials 0.000 description 2
- 239000004927 clay Substances 0.000 description 2
- 239000003864 humus Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 235000019837 monoammonium phosphate Nutrition 0.000 description 2
- 239000006012 monoammonium phosphate Substances 0.000 description 2
- 125000005342 perphosphate group Chemical group 0.000 description 2
- 230000000379 polymerizing effect Effects 0.000 description 2
- ODGAOXROABLFNM-UHFFFAOYSA-N polynoxylin Chemical compound O=C.NC(N)=O ODGAOXROABLFNM-UHFFFAOYSA-N 0.000 description 2
- OTYBMLCTZGSZBG-UHFFFAOYSA-L potassium sulfate Chemical compound [K+].[K+].[O-]S([O-])(=O)=O OTYBMLCTZGSZBG-UHFFFAOYSA-L 0.000 description 2
- 229910052939 potassium sulfate Inorganic materials 0.000 description 2
- 235000011151 potassium sulphates Nutrition 0.000 description 2
- 238000009331 sowing Methods 0.000 description 2
- KNIKDPRISVIPBU-UHFFFAOYSA-N 1,2-dichloro-4-[isocyano-(4-methylphenyl)sulfonylmethyl]benzene Chemical compound C1=CC(C)=CC=C1S(=O)(=O)C([N+]#[C-])C1=CC=C(Cl)C(Cl)=C1 KNIKDPRISVIPBU-UHFFFAOYSA-N 0.000 description 1
- PAWQVTBBRAZDMG-UHFFFAOYSA-N 2-(3-bromo-2-fluorophenyl)acetic acid Chemical compound OC(=O)CC1=CC=CC(Br)=C1F PAWQVTBBRAZDMG-UHFFFAOYSA-N 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 description 1
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- 239000005696 Diammonium phosphate Substances 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- SQSPRWMERUQXNE-UHFFFAOYSA-N Guanylurea Chemical compound NC(=N)NC(N)=O SQSPRWMERUQXNE-UHFFFAOYSA-N 0.000 description 1
- 229920000084 Gum arabic Polymers 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- YIKSCQDJHCMVMK-UHFFFAOYSA-N Oxamide Chemical compound NC(=O)C(N)=O YIKSCQDJHCMVMK-UHFFFAOYSA-N 0.000 description 1
- 239000002202 Polyethylene glycol Substances 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 241000978776 Senegalia senegal Species 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- 229910021536 Zeolite Inorganic materials 0.000 description 1
- MMDJDBSEMBIJBB-UHFFFAOYSA-N [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] Chemical compound [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] MMDJDBSEMBIJBB-UHFFFAOYSA-N 0.000 description 1
- 239000000205 acacia gum Substances 0.000 description 1
- 235000010489 acacia gum Nutrition 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 229960000892 attapulgite Drugs 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- MYFXBBAEXORJNB-UHFFFAOYSA-N calcium cyanamide Chemical compound [Ca+2].[N-]=C=[N-] MYFXBBAEXORJNB-UHFFFAOYSA-N 0.000 description 1
- 235000013877 carbamide Nutrition 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- MNNHAPBLZZVQHP-UHFFFAOYSA-N diammonium hydrogen phosphate Chemical compound [NH4+].[NH4+].OP([O-])([O-])=O MNNHAPBLZZVQHP-UHFFFAOYSA-N 0.000 description 1
- 229910000388 diammonium phosphate Inorganic materials 0.000 description 1
- 235000019838 diammonium phosphate Nutrition 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- 238000010828 elution Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 210000003608 fece Anatomy 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 229920005610 lignin Polymers 0.000 description 1
- 239000010871 livestock manure Substances 0.000 description 1
- 239000011572 manganese Substances 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 1
- 239000000618 nitrogen fertilizer Substances 0.000 description 1
- 235000015816 nutrient absorption Nutrition 0.000 description 1
- 235000018343 nutrient deficiency Nutrition 0.000 description 1
- 235000005985 organic acids Nutrition 0.000 description 1
- 229910052625 palygorskite Inorganic materials 0.000 description 1
- 239000003415 peat Substances 0.000 description 1
- 239000010451 perlite Substances 0.000 description 1
- 235000019362 perlite Nutrition 0.000 description 1
- 239000002686 phosphate fertilizer Substances 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- UBBSASFKEJHWOE-UHFFFAOYSA-M potassium hydrogen sulfate sulfuric acid Chemical compound [K+].OS(O)(=O)=O.OS([O-])(=O)=O UBBSASFKEJHWOE-UHFFFAOYSA-M 0.000 description 1
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 235000019830 sodium polyphosphate Nutrition 0.000 description 1
- 239000002881 soil fertilizer Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 238000001256 steam distillation Methods 0.000 description 1
- 235000000346 sugar Nutrition 0.000 description 1
- 238000013268 sustained release Methods 0.000 description 1
- 239000012730 sustained-release form Substances 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- 239000011573 trace mineral Substances 0.000 description 1
- 235000013619 trace mineral Nutrition 0.000 description 1
- 238000013519 translation Methods 0.000 description 1
- 230000014616 translation Effects 0.000 description 1
- 239000010455 vermiculite Substances 0.000 description 1
- 229910052902 vermiculite Inorganic materials 0.000 description 1
- 235000019354 vermiculite Nutrition 0.000 description 1
- 239000010457 zeolite Substances 0.000 description 1
Abstract
【解決手段】メチロール尿素重合肥料を含む化成肥料であって、化成肥料中の窒素成分の5〜100重量%がメチロール尿素重合肥料由来であり、メチロール尿素重合肥料100重量部に対して無機酸、有機酸及び/又はそれらの塩を1〜3000重量部添加して造粒し、次いでこれを乾燥して得られる化成肥料。
【選択図】なし
Description
(1)メチロール尿素重合肥料を含む化成肥料であって、化成肥料中の窒素成分の5〜100重量%がメチロール尿素重合肥料由来であり、メチロール尿素重合肥料100重量部に対して無機酸、有機酸及び/又はそれらの塩を1〜3000重量部添加して造粒し、次いでこれを乾燥して得られる化成肥料。
(2)無機酸及び/又は有機酸が、リン酸、過燐酸、重過燐酸、塩酸、硫酸、硝酸、酢酸、クエン酸、蓚酸、酪酸、酒石酸、リンゴ酸、ギ酸、乳酸、プロピオン酸及び腐植酸から選ばれた1種以上である前記(1)記載の化成肥料。
(3)メチロール尿素重合肥料を含む化成肥料の製造方法であって、化成肥料中の窒素成分の5〜100重量%がメチロール尿素重合肥料由来であり、メチロール尿素重合肥料100重量部に対して無機酸、有機酸及び/又はそれらの塩を1〜3000重量部添加して造粒し、次いでこれを乾燥することを含む化成肥料の製造方法。
(4)無機酸及び/又は有機酸が、リン酸、過燐酸、重過燐酸、塩酸、硫酸、硝酸、酢酸、クエン酸、蓚酸、酪酸、酒石酸、リンゴ酸、ギ酸、乳酸、プロピオン酸及び腐植酸から選ばれた1種以上である前記(3)記載の製造方法。
これらの肥料成分の使用割合は、本発明で使用する酸性原料の範囲内であれば、目的とする成分含量により適宜変動させて使用可能である。
表1に示した重量比でメチロール尿素重合肥料及び酸(合計4kg)をパン造粒器に入れて十分混合し、水を適当に供給しながら造粒した。得られた造粒物を105℃の棚段式の乾燥機に4時間入れた後、室温まで冷却した。
250ml容の三角フラスコに、2mmのふるいを通した風乾土壌(栃木県産黒ボク土、未耕地土壌)を乾土当り50g入れ、そこに実施例1〜8及び比較例1の肥料を全窒素で50mg相当量を施用し、最大容水量の60%になるように水を入れ、容器上部をアルミホイルで覆って30℃の恒温器に静置した。試験は1区当り3連制とし、供試土壌に含まれる無機態窒素を測定するために肥料無添加区も設けた。一定期間経過後に土壌全てを10%塩化加里溶液で500ml容フラスコに流し込み1時間振とうした。ろ過してろ液中のアンモニア態及び硝酸態窒素を水蒸気蒸留法で分析し、80%無機化するまでの日数を求めた。その結果を表2に示す。
表3に示した重量比でメチロール尿素重合肥料、過りん酸石灰及びCMCをパン造粒器に4kg入れて十分混合し、水を適当に供給しながら造粒した。得られた造粒物を105℃の棚段式の乾燥機に4時間入れた後、室温まで冷却した。
「1−2.土壌中における無機化率測定試験」と同じ方法で実施した。その結果を表4に示す。
メチロール尿素重合肥料1.32kg、過りん酸石灰2.00kg、塩化加里0.57kg、ベントナイト0.59kg、CMC0.06kgをパン造粒機に入れて充分混合し、水を適当に供給しながら造粒した。得られた造粒物を105℃の棚段式の乾燥機に4時間入れた後、室温まで冷却した。
メチロール尿素重合肥料1.32kg、熔成りん肥1.36kg、塩化加里0.57kg、ベントナイト1.03kg、CMC0.06kgをパン造粒機に入れて充分混合し、97%硫酸85gを水500gに希釈した溶液400gを供給しながら造粒した。得られた造粒物を105℃の棚段式の乾燥機に4時間入れた後、室温まで冷却した。
粒状のメチロール尿素重合肥料1.3kg、17.5%粒状過りん酸石灰2.0kg、塩化加里0.55kgを配合した。
土壌3000gに窒素換算で1000mgの実施例15、16の粒状肥料または比較例3の配合肥料を充分混合して、a/5000のワグネルポットに充填し、土壌の最大容水量の60%の状態になるよう水道水を潅水した。水が充分しみこんだ後、こまつな(品種:おそめ小松菜)20粒を播種し、ガラス温室内で栽培した。播種6日後にポット当り10本に間引いた。栽培期間中は、適宜潅水し、乾燥しないように管理した。播種58日後に地上部を収穫し、葉長および生体重を測定した。その結果を表5に示す。なお、本試験は、1試験区あたり3ポットで実施した。
Claims (4)
- メチロール尿素重合肥料を含む化成肥料であって、化成肥料中の窒素成分の5〜100重量%がメチロール尿素重合肥料由来であり、メチロール尿素重合肥料100重量部に対して無機酸、有機酸及び/又はそれらの塩を1〜3000重量部添加して造粒し、次いでこれを乾燥して得られる化成肥料。
- 無機酸及び/又は有機酸が、リン酸、過燐酸、重過燐酸、塩酸、硫酸、硝酸、酢酸、クエン酸、蓚酸、酪酸、酒石酸、リンゴ酸、ギ酸、乳酸、プロピオン酸及び腐植酸から選ばれた1種以上である請求項1記載の化成肥料。
- メチロール尿素重合肥料を含む化成肥料の製造方法であって、化成肥料中の窒素成分の5〜100重量%がメチロール尿素重合肥料由来であり、メチロール尿素重合肥料100重量部に対して無機酸、有機酸及び/又はそれらの塩を1〜3000重量部添加して造粒し、次いでこれを乾燥することを含む化成肥料の製造方法。
- 無機酸及び/又は有機酸が、リン酸、過燐酸、重過燐酸、塩酸、硫酸、硝酸、酢酸、クエン酸、蓚酸、酪酸、酒石酸、リンゴ酸、ギ酸、乳酸、プロピオン酸及び腐植酸から選ばれた1種以上である請求項3記載の製造方法。
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