@article{oai:ous.repo.nii.ac.jp:00000716,
 author = {野上, 祐作 and Nogami, Yusaku and 平田, まき子 and Hirata, Makiko and 堀, 和子 and Hori, Kazuko and 石井, 猛 and Ishii, Takeshi},
 journal = {岡山理科大学紀要. A, 自然科学, Bulletin of Okayama University of Science. A, Natural Sciences},
 month = {Mar},
 note = {P(論文), It was studied to examine the changes of nitrogen sources in water hyacinth aquatic treatment systems (cultured area ; 0.3m^2,initial value of water hyacinth ; 600g, contacting time ; about 24 hr.). Influent was introduced from outlet of extended-aeration plants. Results in growthing period of water hyacinth (from early summer to fall) are as follows : 1) Total nitrogen was decreased by approximately 4 mg/l (22%) in average. Ammonium nitrogen was decreased by 2.8 mg/l, but decrease of nitrate nitrogen was not seen. 2) In basic water (pH&gnE;6.5 ), decrease of ammonium nitrogen was seen remarkably. Conversely, decrease of nirate was seen slightly in acidic water (pH<6.5) according to t-test (risk rate : 10%). 3) It was suggested that nitrogen sources absorbed by water hyacinth were both ammonium nitrogen and nitrate, but rate of absorption by water hyacinth was depended to pH levels in culture water.},
 pages = {17--23},
 title = {ホテイアオイの生育に伴なう栽培液の形態別窒素の挙動},
 volume = {21},
 year = {1986},
 yomi = {ノガミ, ユウサク and ヒラタ, マキコ and ホリ, カズコ and イシイ, タケシ}
}