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琉球産土壌の微量要素に関する研究1 Spurway Soil Test Kit による予備試験 1. 石垣島産土壌
http://hdl.handle.net/20.500.12000/21569
http://hdl.handle.net/20.500.12000/215695268c4db-a735-473a-aeda-e00a84636992
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
No2p105.pdf
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| Item type | デフォルトアイテムタイプ（フル）(1) | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 公開日 | 2011-08-12 | |||||||||
| タイトル | ||||||||||
| タイトル | 琉球産土壌の微量要素に関する研究1 Spurway Soil Test Kit による予備試験 1. 石垣島産土壌 | |||||||||
| 言語 | ja | |||||||||
| タイトル | ||||||||||
| タイトル | Study on minor elements of Ryukyuan soils. 1 Preliminary test by Spurway Soil Test Kit. 1.Soils from Ishigaki Island. | |||||||||
| 言語 | en | |||||||||
| 作成者 |
鎮西, 忠茂
× 鎮西, 忠茂
× Chinzei, Tadashige
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| アクセス権 | ||||||||||
| アクセス権 | open access | |||||||||
| アクセス権URI | http://purl.org/coar/access_right/c_abf2 | |||||||||
| 内容記述 | ||||||||||
| 内容記述タイプ | Other | |||||||||
| 内容記述 | 1. This study is for the purpose of obtaining a key on minor elements of Ryukyuan soils. The Spurway Soil Test Kit was used for preliminary testing on soils from 20 locations in Ishigaki Island. 2. Mg^<++> is well supplied in most soils. However, samples from two locations of the twenty contained only one ppm. or less in soil extract for the active test. So it is suggested that the possibility of magnesium defficiency in these soils may be noticed. 3. Samples from four locations may have an Fe^<+++> defficiency risk because they are very low in Fe^<+++> by reserve test. In rice paddy soils from one location, very high content of iron was found in reserve test extract. I suggested that tha reserve test of Fe^<+++> may be acceptable for diagnosis "Akiochi Suiden" (degraded paddy field). 4. Low Mn^<++> test results were obtained from samples of seven locations. These results indicated that the possibility of Mn^<++> defficiency may be encountered io these soils. Samples from five locations among those tested have had pH value. Furthermore, samples from four locations were high in Mn^<++> content which may indicate manganese toxicity for certain crops. There is the difficulty of reserve test for Mn^<++> in high Fe^<+++> cantent extract. 5. Low test results in SO_4^<--> content were obtained in all samples except one. 6. Other minor elements besides the above were not examined because the Spurway Soil Test Kit does not have such testing methods. 7. Tests were also made on other than minor elements which are summarized as follows: a) All soils except one were low nitrogen content. It is suggested that they need nitrogen fertilization. b) All soils were also low in phosphorus content which indicates the need for good phosphorus fertilization. c) Potassium reserve test results were preponderantly high. However, some had low active test results which suggest the need for reasonable potassium fertilization. d) Ca^<++> were high in slightly alkaline soils, and contrarily low in acid soils. It is suggested that the former is unsuitable for most acid-soil crops, including pineapple, oranges, tea plant etc. Acid soils need lime application for high-lime crops such as barley, soybean, spinach, etc. e) Al^<+++>, Na^+, Cl^- and NO_2^- were all below toxic levels. | |||||||||
| 内容記述 | ||||||||||
| 内容記述タイプ | Other | |||||||||
| 内容記述 | 紀要論文 | |||||||||
| 出版者 | ||||||||||
| 出版者 | 琉球大学農家政学部 | |||||||||
| 言語 | ja | |||||||||
| 言語 | ||||||||||
| 言語 | jpn | |||||||||
| 資源タイプ | ||||||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||||||
| 資源タイプ | departmental bulletin paper | |||||||||
| 出版タイプ | ||||||||||
| 出版タイプ | NA | |||||||||
| 出版タイプResource | http://purl.org/coar/version/c_be7fb7dd8ff6fe43 | |||||||||
| 識別子 | ||||||||||
| 識別子 | http://hdl.handle.net/20.500.12000/21569 | |||||||||
| 識別子タイプ | HDL | |||||||||
| 収録物識別子 | ||||||||||
| 収録物識別子タイプ | ISSN | |||||||||
| 収録物識別子 | 0370-4238 | |||||||||
| 収録物識別子 | ||||||||||
| 収録物識別子タイプ | NCID | |||||||||
| 収録物識別子 | AN0025056X | |||||||||
| 収録物名 | ||||||||||
| 収録物名 | 琉球大学農家政学部学術報告 | |||||||||
| 言語 | ja | |||||||||
| 収録物名 | ||||||||||
| 収録物名 | Science bulletin of Agriculture & Home Economics Division, University of the Ryukyus | |||||||||
| 言語 | en | |||||||||
| 書誌情報 |
号 2, p. 105-118 |
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