Title

營養杯對長喙田菁在鉛鋅尾礦上的生長、固氮和重金屬積累的影響

Translated Titles

The Effects of Nutrition Polybag on the Growth, N-fixation and Heavy Metal Accumulation of Sesbania rostrata Grown on Pb/Zn Tailings

Authors

簡曙光(Shu-Guang Jian);楊中藝(Zhong-Yi Yang);簡偉軍(Wei-Jun Jian)

Key Words

長喙田菁 ; 營養杯 ; 鉛鋅礦尾礦 ; 生長 ; 固氮 ; 重金屬積累 ; Sesbanis rostrata ; Nutrition polybag ; Pb/Zn tailings ; Growth ; N-fixation ; Heavy metal accumulation

PublicationName

熱帶亞熱帶植物學報

Volume or Term/Year and Month of Publication

11卷1期(2003 / 03 / 01)

Page #

34 - 40

Content Language

簡體中文

Chinese Abstract

Growth, N-fixation and heavy metal accumulation of Sesbania rostrata transplanted on acidified Pb/Zn tailings in Lechang, Guangdong Province, were investigated. Experiments were carried out by transplanting seedlings prepared with nutrition polybags of 9.5 cm in diameter and 10 cm height containing 1 kg soil (A), of 7.5 cm in diameter and 8 cm height containing 0.5 kg soil (B) and without polybag (C). The results showed that Sesbania rostrata succeeded to establish, grow and fix N on the tailings of pH 5-7, but failed to grow at pH<3. After transplanting on tailings for 84 days, the plant height (140-144 cm), basal diameter of stem (1.59-1.68 cm), individual biomass (36.6-38.8 g DW), dry matter production (5124-5432 kg hm^(-2)) and nitrogen accumulation (77-107 kg hm^(-2)) in treatments A and B were significantly higher than those in treatment C which were 117 cm, 1.35 cm, 20.2 g, 2828 kg hm^(-2), and 40 kg hm^(-2), respectively. The contents of Pb, Zn, Cu and Cd were highest in the roots followed by stems and leaves, and the amounts of the 4 heavy metals in whole plant were in the order Zn (186-221 mg kg^(-1)) > Pb (96-145 mg kg^(-1)) > Cu (17-30 mg kg^(-1)) > Cd (3-4 mg kg^(-1)). Transplanting seedlings with nutrition polybag could improve the growth and N-fixation, and markedly decrease heavy metals accumulation in S. rostrata. It is suggested that S. rostrata is a good pioneer species for bioremediation of the tailings.

English Abstract

Growth, N-fixation and heavy metal accumulation of Sesbania rostrata transplanted on acidified Pb/Zn tailings in Lechang, Guangdong Province, were investigated. Experiments were carried out by transplanting seedlings prepared with nutrition polybags of 9.5 cm in diameter and 10 cm height containing 1 kg soil (A), of 7.5 cm in diameter and 8 cm height containing 0.5 kg soil (B) and without polybag (C). The results showed that Sesbania rostrata succeeded to establish, grow and fix N on the tailings of pH 5-7, but failed to grow at pH<3. After transplanting on tailings for 84 days, the plant height (140-144 cm), basal diameter of stem (1.59-1.68 cm), individual biomass (36.6-38.8 g DW), dry matter production (5124-5432 kg hm^(-2)) and nitrogen accumulation (77-107 kg hm^(-2)) in treatments A and B were significantly higher than those in treatment C which were 117 cm, 1.35 cm, 20.2 g, 2828 kg hm^(-2), and 40 kg hm^(-2), respectively. The contents of Pb, Zn, Cu and Cd were highest in the roots followed by stems and leaves, and the amounts of the 4 heavy metals in whole plant were in the order Zn (186-221 mg kg^(-1)) > Pb (96-145 mg kg^(-1)) > Cu (17-30 mg kg^(-1)) > Cd (3-4 mg kg^(-1)). Transplanting seedlings with nutrition polybag could improve the growth and N-fixation, and markedly decrease heavy metals accumulation in S. rostrata. It is suggested that S. rostrata is a good pioneer species for bioremediation of the tailings.

Topic Category 生物農學 > 植物學
生物農學 > 生物環境與多樣性