Abstract
The aquatic plants were cultivated in pots containing pig waste water, adjusted to three levels of $NH_4-N$ concentration 50, 100 and 200ppm. The aquatic plants were Eichhornia crassipes solms-laub, Monochoria korsakowii Regel et maack, Zizania caduciflora, Typha orientalis, Acorus asiaticus, Cyperus exaltaus, Colocasia antiquorum var. Yield, content and amount of nitrogen and phosphorus absorped by plants, and growth status were investigated. The results obtained are as follows. 1. The content and removal amount of nitrogen and phosphrus by plants were the highest in Eichhornia crassipes solms-laub. 2. Yield of dry matter in plants in 100ppm $NH_4-N$ was in the order of Eichhornia crassipes solms-laub>Zizania caduciflora>Typha orientalis>Monochoria korsakowii Regel et maack>Acorus asiaticus. 3. The removal amount of nitrogen by plants in the 100ppm $NH_4-N$ was in the order of Eichhornia crassipes solms-laub>Zizania caduciflora>Monochoria korsakowii Regel et maack>Typha orientalis>Acorus asiaticus>Colocasia antiquorum var>Cyperus exaltatus. Removal amount of phosphorus was in the order of Eichhornia cras sipes solms-laub>Monochoria korsakowii Regel et maack>Zizania caducilora>Typha orientalis>Acorus asiaticus> Cyperus exaltatus>Colocasia antiquorum var. 4. Concentration causing growth damage was 200ppm of $NH_4-N$ in Eichhornia crassipes solms-laub, Zizania caduciflora and Typha orientalis and 100ppm in Monochoria korsakowii Regel et maack and Acorus asiaticus. 5. Nitrogen content was the highest in leaf and phosphorus content was the highest in float of the water hyacinth. 6. The number of panicles of the water hyacinth increased by 752 pieces and dry matters were about 5,000kg/l0a during one year.
축산폐수(畜産廢水)의 정화방법(淨化方法)의 일환으로 사각(四角) pot에 수초(水草)인 부레옥잠, 물옥잠, 줄, 부들 창포 왕골, 토란을 이식하고 관수(灌水)하면서 재배(栽培)하고 건물생산량(乾物生産量), 식물체중(植物體中)의 질소(窒素)및 인산함량(燐酸含量), 질소(窒素) 및 인산흡수량(燐酸吸收量), 부레옥잠의 생육상황(生育狀況)등을 조사(調査)하여 축산폐수(畜産廢水)의 정화능력(淨化能力)을 조사(調査)한 결과(結果)는 다음과 같다. 1 식물별(植物別) 질소(窒素), 인산함량(燐酸含量) 및 제거량(除去量)은 부레옥잠이 가장 높았다. 2. $NH_4-N$ 100ppm구(區)에서 건물수량(乾物收量)은 부레옥잠>줄>부들>물옥잠>창포의 순이었다. 3. $NH_4-N$ 100ppm구(區)에서 질소제거량(窒素除去量)은 부레옥잠>줄>물옥잠>부들>창포>토란>왕골> 순이었고, 인산(燐酸)은 부레옥잠>물옥잠>줄>부들>창포>왕골>토란순이었다. 4. 생육저해(生育沮害) $NH_4-N$ 농도(濃度)는 부레옥잠, 줄, 부들 은 200ppm이고, 물옥잠 및 창포는 100ppm이었다. 5. 부레옥잠에서 질소(窒素)는 잎에 인산(燐酸)은 부레에 많이 함유(含有)되어 있었다. 6. 부레옥잠의 년간(年間) 재배기간(栽培期間)을 7개월(個月)로보면 $NH_4-N$ 100ppm구(區)에서 분벽(分蘗)은 1개체(個體)가 752개(個)로 증가(增加)되고 건물수량(乾物收量)은 10a당(當) 5톤정도(程度)로 추정(推定)되었다.