1.

論文(リポジトリ)

論文(リポジトリ)
石嶺, 行男 ; 新本, 光孝 ; 新里, 孝和 ; 山盛, 直 ; 米盛, 重友 ; Ishimine, Yukio ; Aramoto, Mitsunori ; Shinzato, Takakazu ; Yamamori, Naoshi ; Yonemori, Shigetomo
出版情報: 琉球大学農学部学術報告 — The Science Bulletin of the Faculty of Agriculture. University of the Ryukyus.  pp.157-175,  1992-12-01.  琉球大学農学部
URL: http://hdl.handle.net/20.500.12000/3821
概要: 西表島東部と西部の雑草の実態を把握するために農耕地雑草,及び帰化植物の種類,発生量及び分布を調べた。1.耕地雑草では,サトウキビ畑雑草27科131種,パイナップル畑雑草20科46種,サトウキビ畑・パイナップル畑共通雑草22科59種,水田雑草 25科69種が確認できた。2.帰化植物は17科78種,全草種では56科305種が確認できた。3.雑草分布調査では,サトウキビ畑で出現した種数は174種であり,45.7%が帰化植物であった。パイナップル畑においては44種のうち,22.7%,水田においては63種のうち,12.6%が帰化植物であった。4.作物畑別に雑草の分布を見ると,サトウキビ畑ではマメ科,イネ科,キク科が多く,パイナップル畑ではイネ科,キク科,水田ではカヤツリグサ科,イネ科が多かった。5.サトウキビ畑の生活型組成は,TH-R_5-D_4-e,パイナップル畑においてはH-R_5-D_1-e,水田においては,HH-R_5-D_1-tが最も多かった。6.地域的には雑草の組成にあまり差はみられなかったが,概して大原,豊原地域にはタツノツメガヤ,ハリビューが多かった。7.比較的新しい帰化植物で,現に盛んに繁殖しているもの,または将来繁殖地が著しく拡大するおそれのある雑草はタチスズメノヒエとタチアワユキセンダングサである。
The kinds, growing quantities and distributions of arable land weeds and naturalized weeds were investigated for the purpose of grasping the actual conditions of weeds in the eastern and western parts of Iriomote Island. 1. As arable land weeds, sugarcane field weeds of 27 families and 131 species. pineapple field weeds of 20 families and 46 species, the weeds common to sugarcane and pineapple field of 22 families and 59 species and paddy field weeds of 25 families and 69 species could be confirmed. 2. Naturalized weeds of 17 families and 78 species could be confirmed. of all of the weed species, 56 families and 305 species could be confirmed. 3. As a result of the investigation on the distributions of weeds, the number of species occurring in sugarcane fields were 174 and the ratio of naturalized weeds among them was 45.7%. The ratio of naturalized weeds was 22.7% among 44 species in sugarcane fields and 12.6% among 63 species in the paddy fields. 4. With respect to the distributions of weeds, weeds of Heguminosae, Gramineae and Compositae were numerous in the sugarcane fields, and those of Gramineae and Compositae were many in the pineapple fields, and Cyperaceae and Gramineae were many in the paddy fields. 5. With respect to a life form composition, TH-R5-D5-e was most dominate in the sugarcane fields and H-R5-D1-e was most abundant in the pineapple fileds and HH-R5-D1-t was most numerous in the paddy fields. 6. Not much difference was seen in the compositions of weeds locally but, generally, Dactylocteninm aegyptium Beanv. and Amaranthus spinosus L. were many in the Ohara and Toyofara reagions. 7. Of the relatively new naturalized weeds, which are vigorously growing or estimated to markedly increased in the future, Paspalum urvillei Steud. and Bidens pilosa var. radiata Scherff.
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2.

論文(リポジトリ)

論文(リポジトリ)
新本, 光孝 ; 石垣, 長健 ; 米盛, 重友 ; 山盛, 直 ; Aramoto, Mitsunori ; Ishigaki, Choken ; Yonemori, Shigetomo ; Yamamori, Naoshi
出版情報: 琉球大学農学部学術報告 — The Science Bulletin of the Faculty of Agriculture. University of the Ryukyus.  pp.279-285,  1984-11-19.  琉球大学農学部
URL: http://hdl.handle.net/20.500.12000/3982
概要: 本研究は, 巨大ギンネムの実生及びさし木による繁殖を向上させるためにおこなったものである。本実験では種子の発芽試験をおこない, さらにさし穂のさしつけ用土別, 薬剤処理別, 径級別の発根の比較をこころみた。実験の結果を要約すると次のとおりで ある。1.巨大ギンネムの種子は, 長径, 短径, 重量ともに在来種よりも大きく, それぞれ1.3,1.5,1.8倍であった。2.発芽に対する最適温度及び温水処理はそれぞれ35℃, 70℃で, その発芽率は80%であった。3.用土別の発根率は, バーミキュライトは海砂及び鹿沼土よりもよかった。4.薬剤処理の発根は無処理よりもよく, とくにメネデール50倍がよかった。5.径級別の発根は1.0∿1.5cm級が他の径級よりもよく, その発根率は約70%であった。
The present study was done for the purpose of promoting vegetative propagation by seedling and cutting of the Giant Ipil-ipil (K28). In this report, the authors tried a germination test of seed and made a comparison of rootings among used soils (Vermiculite, Sea sand and Kanumado), treatments of chemicals, and diameter class, of the cutting. The results of the study are summarized as follows : 1. Maior axis, minor axis and weight (per 100 grains) of the K28 seeds were lager 1.2 times, 1.5 times and 1.8 times than local seeds, respectively. 2. The optimum temperature and hot water temperature for germination were 35℃ and 70℃, respectively, and the percentage of germination was 80%. 3. On the rootings by used soils, Vermiculite gave better effect than Sea sand and Kanumado. 4. The rooting of the cuttings for treatments with chemical gave better effect than the control. the rooting percentage of the cuttings for treatment with diluted solution 50 times of Menedael gave better effect than the other one. 5. On the rootings by the diameter class, rootings of 1.0-1.5cm class gave better among the others, and its rooting percentage was about 70%.
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3.

論文(リポジトリ)

論文(リポジトリ)
米盛, 重友 ; 石垣, 長健 ; 新本, 光孝 ; 砂川, 季昭 ; Yonemori, Shigetomo ; Ishigaki, Choken ; Aramoto, Mitsunori ; Sunakawa, Sueaki
出版情報: 琉球大学農学部学術報告 — The Science Bulletin of the Faculty of Agriculture. University of the Ryukyus.  pp.287-292,  1984-11-19.  琉球大学農学部
URL: http://hdl.handle.net/20.500.12000/3983
概要: 本研究は, 亜熱帯地域における有用樹種の育林技術を確立するためにおこなったものである。この研究では, ヤエヤマシタンの発芽試験及びさし木試験をこころみた。実験の結果を要すると, 次のとおりである。1.1莢中における種子数の比率は, 1個で3 5%, 2個で40%, 4個で5%であった。2.種子の大きさは, 長径, 短径及び重量(100粒当り)は, それぞれ12.6mm, 5.0mm, 1.1gであった。3.発芽に対する最適温度は25∿30℃で, その発芽率は100%であった。4.発根率は, 薬剤処理は無処理よりもよく, なかでもルートン及びメネデール50倍は他のものよりもよかった。5.用土別には, 鹿沼土がよく, ついでバーミキュライト, 海砂の順であった。
The present study was done in order to establish planting techniques for useful trees in the subtropics. In this study, the authors tried germination and cutting tests of the Pterocarpus indicus Willd. The results of the study are summarized as follows : 1. The percentages of the number of seeds per pad were 35% for one, 40% for two, 20% for three and 5% for four, respectively. 2. Major axis, minor axis and weight (per 100 grains) of seeds were 12.6mm, 5.0mm and 1.1g, respectively. 3. The opitimum temperature for germination was from 25℃ to 30℃, and its percentage was 100%. 4. The rooting of cuttings for treatments with chemicals gave better effect than the control. The rooting percentage of cutting for treatment with rooton powder and diluted solution 50 times of Menedael gave better effect than the other one. 5. By the rooting percentage of used soils, Kanumado gave the best effect, Vermiculite the second and Sea sand the third.
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