Results 71 to 80 of about 214 (146)
Shuitu Baochi Xuebao, 2022 生态缓冲带可有效截留阻控非点源污染物向水体中迁移。选取紫花苜蓿(Medicago sativa L.)、高羊茅(Festuca elata Keng ex E. Alexeev)、草木樨(Melilotus officinalis (Linn.))、早熟禾(Poa annua L.)和黑麦草(Lolium perenne L.)5种草本植物构建模拟生态缓冲带,通过人工模拟径流试验,探讨不同植被类型、污染物入流浓度、生态缓冲带坡度以及施加生物炭种类条件下,生态缓冲带对径流中氟离子阻控效果的影响。结果表明 ...
徐颖 +6 more
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Research progress in the prevention and treatment of insomnia with classical prescriptions. [PDF]
Zhong Nan Da Xue Xue Bao Yi Xue Ban, 2023 Shi X, Chen L, Li W, Wang R.
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A preliminary study on phytoremediation of phenanthrene by a marine halophyte Sesuvium portulacastrum Linn.in hydroponic cultures [PDF]
, 2012 采用水培法研究了海洋滩涂耐盐植物海马齿(SESuVIuM POrTu lACASTruM lInn.)对海水菲污染的修复作用.结果显示,实验4d后,不种植海马齿的对照组、种植海马齿的抑菌组和不抑菌组海水中菲浓度分别从0.988、0.942和0.957Mg·l-1降至0.553、0.185和0.070Mg·l-1,降低了44.0%、80.4%和92.7%;与对照组相比,抑菌组(T1)和不抑菌组(T2)海水中菲的去除率分别提高了36.4%和48.7%,不抑菌组又比抑菌组高12.3%.利用差减法计算的结果显示,
姜丹 +4 more
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Research on Environmental Remediation of Uranium Mines in Southern China: A Review [PDF]
This is an article in the field of mining environment. Most of the uranium mines discovered and mined in my country are located in Hunan, Jiangxi, and Guangdong.
Sufeng SHI, Xia OUYANG
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Shuitu Baochi Xuebao, 2008 在四川省丹棱县退耕还林地上,采用网袋法对两种草本层(黑麦草和自然草)台湾桤木林地中细根分解及养分释放的对比,以及对台湾桤木 黑麦草复合模式草根与细根混合分解进行了为期1 a的实验研究。结果表明:台湾桤木细根在复合模式和自然模式中分解速率、养分释放有所不同,经过1 a的分解,复合模式中N,K,Ca的残留率显著低于自然模式,而干质量、P,Mg的残留率差异不显著;复合模式混合处理的分解速率和N,P,K,Ca释放率介于单独分解的细根和草根之间,而Mg释放率则大于单独分解的细根和草根,经过1 a的分解 ...
WANG, FAN, LI, ZHANG, LI, RONG
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Shuitu Baochi Xuebao, 2008 以潮褐土为供试土壤,通过模拟试验研究了高羊茅(Festuca arundinacea)和黑麦草(Lolium multif lorum)对复合污染土壤Cd,Pb,Zn的富集特点。结果表明,在土壤Cd,Pb,Zn复合污染处理条件下,高羊茅Cd,Pb,Zn的平均富集量,地上部分别为5.76,19.77,418.18 mg/kg,地下部分别为129.82,256.66,354.66 mg/kg;黑麦草Cd,Pb,Zn的平均富集量,地上部分别为5.57,26.13,467.18 mg/kg,地下部分别为114 ...
杨卓 +4 more
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Research Progress of Nitrogen Leaching in Farmland Soil [PDF]
, 2014 对农田土壤氮素淋失的相关研究进行综述和总结是研究农业面源氮素污染的一个至关重要的前提。本文从土壤氮素渗漏淋失形态和迁移机理、氮素渗漏淋失的研究方法和影响土壤氮素渗漏淋失的因素三方面进行了详细的分析介绍,概述了近年来国内外农田氮素渗漏淋失的研究进展和研究成果,并在此基础上展望了未来氮素淋失研究工作的重点。研究结论对农田土壤的水肥管理措施及浅层地下水硝氮污染的减缓有一定的理论和借鉴意义Reviewing and summarizing the related research of farmland ...
朱木兰, 李青松, 王吉苹
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Effects of drought-rehydration on photosynthetic capacity, chlorophyll fluorescence, and microstructure of Cyclobalanopsis glauca seedling leaves in Karst Area of Northwest Guangxi [PDF]
[Objective] To explore the mechanism of Cyclobalanopsis glauca seedlings adapting to the drought-rehydration environment in Karst area, China, using the seedlings of C.
CEN Ying +5 more
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[Analysis of allergen distribution and clinical characteristics of autumn allergic rhinitis in Changchun and surrounding areas]. [PDF]
Lin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za Zhi, 2021 Wang Y +5 more
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Shuitu Baochi Xuebao, 2007 通过对我国南方稻区不同冬季覆盖作物前茬对稻田主要微生物类群数量和主要土壤化学性状的变化进行研究,结果表明：冬季紫云英和黑麦草覆盖在翌年水稻田翻耕前土壤好气细菌、真菌、放线菌数量均比冬闲田高,其中好气性细菌数量差异最显著,分别是冬闲田的94.29%和25.71%;在水稻整个生长过程土壤细菌、真菌和放线菌均呈现移栽后前期迅速增加,然后随着水稻的生长发育逐渐下降,到早稻成熟期有渐渐回升,晚稻收获时又迅速下降的趋势,并且不同时期微生物数量冬季紫云英和黑麦草区均比冬闲田要高 ...
王丽宏 +4 more
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