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更新時(shí)間：2024.12.22
污水處理中溫度對黑藻生長的影響(英文)

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[Objective] The research aimed to study the influence of temperature on the growth of Hydrilla verticillata in the wastewater treatment process.[Method] By using the single factor experiment design,four temperatures which were 5,15,25 and 35 ℃ were set.The growth situation of H.verticillata under the different temperatures was observed in the treatment process of domestic sewerage.[Result] H.verticillata grew luxuriantly at 35 and 25 ℃.Via the cultivation of 15 days,the plant length,branch number,root number and biomass of H.verticillata respectively increased 2.8 and 1.2 cm,7.0 and 5.9 branches,6.2 and 3.7 roots,21% and 25%,which were all significantly or extremely significant higher than that at 5 ℃.Under the cultivation condition of 15 ℃,H.verticillata grew slowly.The increment of plant length,branch number and root number were higher than that at 5 ℃,but they had no significant difference.[Conclusion] During 5-35 ℃,the higher temperature could promote the growth of H.verticillata in wastewater treatment process.

不同基質(zhì)物化特性及對紅葉石楠生長的影響

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通過對不同基質(zhì)(泥炭、木屑、FDL-Ⅲ及樹皮;其中FDL-Ⅲ由牛糞、樹皮、木屑和山核桃殼按一定比例混合而成)的最大持水量、基質(zhì)容重、基質(zhì)固、液、氣三相比、淋洗液電導(dǎo)率、pH、NH4+和P濃度的測定,研究不同基質(zhì)對紅葉石楠生長的影響。結(jié)果表明:紅葉石楠在FDL-Ⅲ基質(zhì)中生長顯著好于其他三種基質(zhì);各基質(zhì)的淋洗液電導(dǎo)率和pH值變幅分別在0.39～0.91mscm-1和5.32～6.72之間,NH4+濃度和水溶性P濃度變幅分別在10.0～171.6mgkg-1和1.16～8.93mgkg-1之間;容重變幅在0.14到0.20gcm-3之間,均屬于輕型基質(zhì);各處理基質(zhì)的水/氣比變幅較大,在1～4.8之間,其中FDL-Ⅲ為1.63,為最適植物生長的水/氣比。與泥炭、木屑及樹皮基質(zhì)相比,FDL-Ⅲ持水穩(wěn)定性最強(qiáng);苗木生長與基質(zhì)最大持水量呈線性顯著相關(guān),而與其他理化性狀不相關(guān)。

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