本文主要研究内容
作者李心（2019）在《酸性水稻土镉污染修复剂筛选、效果验证与评估》一文中研究指出：镉(Cd)是农田首要关注和控制的污染物,湖南湘潭、广西河池和广东韶关等地因为有色金属工业的发展使周边农田镉污染较严重。本文通过10种不同修复剂的添加,研究修复剂对稻米镉、土壤pH、土壤有效镉、水稻产量的影响;通过筛选试验获得适宜农田应用的三种修复剂,并在广东韶关、广西河池、湖北大冶、江西萍乡和安徽铜陵等五个地区进行大田验证试验,研究修复剂对稻米镉、土壤pH、土壤有效镉、水稻产量以及稻米中营养元素的影响;选取稻米中Cd含量降低率、稻米产量增长率、土壤Cd有效态含量降低率、土壤pH值增加率、修复材料投入成本及额外劳动力投入成本等6个指标作为修复材料的修复效果评价指标,综合评价三种修复剂对酸性水稻土镉污染的修复效果。在镉污染稻田土加入10种修复材料,包括粘土矿物A,硅钙物质B、F、H、I,微生物菌剂C、E,纳米陶瓷材料D,有机物料G,矿物质J。除E只有低剂量处理升高土壤pH外,其余9种修复剂不同剂量均不同程度提高了土壤pH值。提高土壤pH的效果:I>A>C>J>D>B>G>H>F>E。10种修复剂均使土壤有效镉有不同程度的降低,降镉效果:J>C>B>A>G>F>I>H>D>E。在镉污染稻田土加入10种不同土壤修复剂后,除C没有明显降低稻米镉外,其余9种修复剂均使稻米镉显著降低,降镉效果:G>A>J>H>B>I>F>E>C。施用不同剂量的修复剂D、G、H均使水稻产量增加;施用低剂量的修复剂C、中和高剂量E、低和中剂量F也使水稻产量增加。三种修复剂的效果验证结果发现:在湖北大冶、江西萍乡、广东韶关、广西河池和安徽铜陵等五个验证点施用硅钙物质B、纳米陶瓷材料D、有机物料G三种修复剂后,土壤pH值均有不同程度的增加,增加范围为0.14~0.98;土壤有效镉含量均有不同程度的降低,降低范围为0.77%~48.86%;稻米镉含量均降低,降低幅度为0.99%~70.55%。江西萍乡和广西河池两个验证点施用三种修复剂后水稻有不同程度增产效果,增产幅度4.24%~21.43%,湖北大冶和广东韶两个验证点施用修复剂有机物料G、纳米陶瓷材料D、安徽铜陵验证点施用纳米陶瓷材料D后水稻增产幅度分别为1.33%~20.26%。土壤添加修复剂对稻米Ca、Zn、Fe、Se等的影响结果如下:湖北大冶验证点施用G、B、D后稻米中Ca、Zn含量均有不同程度提高,与对照组相比,Ca、Zn含量提高幅度分别为4.7%~15.36%、0.83%~4.9%;江西萍乡验证点施用三种修复剂后增加了稻米中Ca含量,与对照组相比,Ca含量提高0.77%~4.44%;广东韶关验证点施用G、D后增加了稻米中的Fe含量,与对照组相比,Fe含量增加幅度为6.3%~39.59%,施用B增加了稻米中Ca和Se含量,与对照组相比,Ca和Se含量分别提高5.6%、7.4%;广西河池试验点施用B、D后,稻米中Ca、Se含量均增加,与对照相比,Ca、Se含量分别提高0.79%、25.93%;安徽铜陵试验点施用G后,稻米中Ca、Fe、Zn含量均有不同程度提高,与对照相比,Ca、Fe、Zn含量分别提高5.83%、25.37%和1.63%。通过对综合评价指标的计算,比较了三种材料在五个不同地区的修复效果的综合分数,综合分数排序为,广东韶关:硅钙物质B>纳米陶瓷材料D>有机物料G;江西萍乡:硅钙物质B>纳米陶瓷材料D>有机物料G;广西河池:硅钙物质B>有机物料G>纳米陶瓷材料D;湖北大冶:有机物料G>硅钙物质B>纳米陶瓷材料D;安徽铜陵:硅钙物质B>有机物料G>纳米陶瓷材料D。广东韶关、广西河池、湖北大冶、江西萍乡和安徽铜陵五地最适宜施用修复剂硅钙物质B。
Abstract
ge (Cd)shi nong tian shou yao guan zhu he kong zhi de wu ran wu ,hu na xiang tan 、an xi he chi he an dong shao guan deng de yin wei you se jin shu gong ye de fa zhan shi zhou bian nong tian ge wu ran jiao yan chong 。ben wen tong guo 10chong bu tong xiu fu ji de tian jia ,yan jiu xiu fu ji dui dao mi ge 、tu rang pH、tu rang you xiao ge 、shui dao chan liang de ying xiang ;tong guo shai shua shi yan huo de kuo yi nong tian ying yong de san chong xiu fu ji ,bing zai an dong shao guan 、an xi he chi 、hu bei da ye 、jiang xi ping xiang he an hui tong ling deng wu ge de ou jin hang da tian yan zheng shi yan ,yan jiu xiu fu ji dui dao mi ge 、tu rang pH、tu rang you xiao ge 、shui dao chan liang yi ji dao mi zhong ying yang yuan su de ying xiang ;shua qu dao mi zhong Cdhan liang jiang di lv 、dao mi chan liang zeng chang lv 、tu rang Cdyou xiao tai han liang jiang di lv 、tu rang pHzhi zeng jia lv 、xiu fu cai liao tou ru cheng ben ji e wai lao dong li tou ru cheng ben deng 6ge zhi biao zuo wei xiu fu cai liao de xiu fu xiao guo ping jia zhi biao ,zeng ge ping jia san chong xiu fu ji dui suan xing shui dao tu ge wu ran de xiu fu xiao guo 。zai ge wu ran dao tian tu jia ru 10chong xiu fu cai liao ,bao gua nian tu kuang wu A,gui gai wu zhi B、F、H、I,wei sheng wu jun ji C、E,na mi tao ci cai liao D,you ji wu liao G,kuang wu zhi J。chu Ezhi you di ji liang chu li sheng gao tu rang pHwai ,ji yu 9chong xiu fu ji bu tong ji liang jun bu tong cheng du di gao le tu rang pHzhi 。di gao tu rang pHde xiao guo :I>A>C>J>D>B>G>H>F>E。10chong xiu fu ji jun shi tu rang you xiao ge you bu tong cheng du de jiang di ,jiang ge xiao guo :J>C>B>A>G>F>I>H>D>E。zai ge wu ran dao tian tu jia ru 10chong bu tong tu rang xiu fu ji hou ,chu Cmei you ming xian jiang di dao mi ge wai ,ji yu 9chong xiu fu ji jun shi dao mi ge xian zhe jiang di ,jiang ge xiao guo :G>A>J>H>B>I>F>E>C。shi yong bu tong ji liang de xiu fu ji D、G、Hjun shi shui dao chan liang zeng jia ;shi yong di ji liang de xiu fu ji C、zhong he gao ji liang E、di he zhong ji liang Fye shi shui dao chan liang zeng jia 。san chong xiu fu ji de xiao guo yan zheng jie guo fa xian :zai hu bei da ye 、jiang xi ping xiang 、an dong shao guan 、an xi he chi he an hui tong ling deng wu ge yan zheng dian shi yong gui gai wu zhi B、na mi tao ci cai liao D、you ji wu liao Gsan chong xiu fu ji hou ,tu rang pHzhi jun you bu tong cheng du de zeng jia ,zeng jia fan wei wei 0.14~0.98;tu rang you xiao ge han liang jun you bu tong cheng du de jiang di ,jiang di fan wei wei 0.77%~48.86%;dao mi ge han liang jun jiang di ,jiang di fu du wei 0.99%~70.55%。jiang xi ping xiang he an xi he chi liang ge yan zheng dian shi yong san chong xiu fu ji hou shui dao you bu tong cheng du zeng chan xiao guo ,zeng chan fu du 4.24%~21.43%,hu bei da ye he an dong shao liang ge yan zheng dian shi yong xiu fu ji you ji wu liao G、na mi tao ci cai liao D、an hui tong ling yan zheng dian shi yong na mi tao ci cai liao Dhou shui dao zeng chan fu du fen bie wei 1.33%~20.26%。tu rang tian jia xiu fu ji dui dao mi Ca、Zn、Fe、Sedeng de ying xiang jie guo ru xia :hu bei da ye yan zheng dian shi yong G、B、Dhou dao mi zhong Ca、Znhan liang jun you bu tong cheng du di gao ,yu dui zhao zu xiang bi ,Ca、Znhan liang di gao fu du fen bie wei 4.7%~15.36%、0.83%~4.9%;jiang xi ping xiang yan zheng dian shi yong san chong xiu fu ji hou zeng jia le dao mi zhong Cahan liang ,yu dui zhao zu xiang bi ,Cahan liang di gao 0.77%~4.44%;an dong shao guan yan zheng dian shi yong G、Dhou zeng jia le dao mi zhong de Fehan liang ,yu dui zhao zu xiang bi ,Fehan liang zeng jia fu du wei 6.3%~39.59%,shi yong Bzeng jia le dao mi zhong Cahe Sehan liang ,yu dui zhao zu xiang bi ,Cahe Sehan liang fen bie di gao 5.6%、7.4%;an xi he chi shi yan dian shi yong B、Dhou ,dao mi zhong Ca、Sehan liang jun zeng jia ,yu dui zhao xiang bi ,Ca、Sehan liang fen bie di gao 0.79%、25.93%;an hui tong ling shi yan dian shi yong Ghou ,dao mi zhong Ca、Fe、Znhan liang jun you bu tong cheng du di gao ,yu dui zhao xiang bi ,Ca、Fe、Znhan liang fen bie di gao 5.83%、25.37%he 1.63%。tong guo dui zeng ge ping jia zhi biao de ji suan ,bi jiao le san chong cai liao zai wu ge bu tong de ou de xiu fu xiao guo de zeng ge fen shu ,zeng ge fen shu pai xu wei ,an dong shao guan :gui gai wu zhi B>na mi tao ci cai liao D>you ji wu liao G;jiang xi ping xiang :gui gai wu zhi B>na mi tao ci cai liao D>you ji wu liao G;an xi he chi :gui gai wu zhi B>you ji wu liao G>na mi tao ci cai liao D;hu bei da ye :you ji wu liao G>gui gai wu zhi B>na mi tao ci cai liao D;an hui tong ling :gui gai wu zhi B>you ji wu liao G>na mi tao ci cai liao D。an dong shao guan 、an xi he chi 、hu bei da ye 、jiang xi ping xiang he an hui tong ling wu de zui kuo yi shi yong xiu fu ji gui gai wu zhi B。
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论文作者分别是来自东北农业大学的李心，发表于刊物东北农业大学2019-08-27论文，是一篇关于镉污染论文,原位钝化论文,修复剂论文,水稻土论文,综合评价论文,东北农业大学2019-08-27论文的文章。本文可供学术参考使用，各位学者可以免费参考阅读下载，文章观点不代表本站观点，资料来自东北农业大学2019-08-27论文网站，若本站收录的文献无意侵犯了您的著作版权，请联系我们删除。