沼液稻田消解对水稻生产、土壤肥力及环境安全的影响

通过大田试验研究了灌施沼液对水稻产量、重金属含量、土壤肥力和土壤环境质量的影响。结果表明,施用沼液能够有效提高水稻籽粒产量和稻秆生物量;提高稻秆N、P、K含量和籽粒N含量,促进N、P、K养分的累积。与无肥对照相比,随着沼液用量的增加稻秆As含量有增加的趋势,籽粒As以及稻秆和籽粒Pb含量没有升高风险,而稻秆和籽粒Cd含量随沼液用量增加呈下降趋势,稻秆和籽粒中Hg与Cr未检出。施用沼液土壤有机质得到明显提高,改善土壤p H;而土壤重金属Cd、Cr、As 、Pb、Hg含量均符合国家土壤质量二级标准值（GB 15618-1995）,无重金属污染风险;但As、Cr含量与沼液呈显著或极显著正相关,长期施...

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Bibliographic Details
Published in广东农业科学 Vol. 43; no. 10; pp. 69 - 76
Main Author 黄继川 彭智平 徐培智 涂玉婷 杨林香 吴雪娜 林志军
Format Journal Article
LanguageChinese
Published 广东省农科院农业资源与环境研究所/广东省养分资源循环利用与耕地保育重点实验室/农业部南方植物营养与肥料重点实验室,广东广州,510640 2016
Subjects
产量
养分
土壤
水稻
沼液
重金属
养分
产量
水稻
沼液
土壤
重金属
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ISSN1004-874X
DOI10.16768/j.issn.1004-874X.2016.10.013

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Summary:通过大田试验研究了灌施沼液对水稻产量、重金属含量、土壤肥力和土壤环境质量的影响。结果表明,施用沼液能够有效提高水稻籽粒产量和稻秆生物量;提高稻秆N、P、K含量和籽粒N含量,促进N、P、K养分的累积。与无肥对照相比,随着沼液用量的增加稻秆As含量有增加的趋势,籽粒As以及稻秆和籽粒Pb含量没有升高风险,而稻秆和籽粒Cd含量随沼液用量增加呈下降趋势,稻秆和籽粒中Hg与Cr未检出。施用沼液土壤有机质得到明显提高,改善土壤p H;而土壤重金属Cd、Cr、As 、Pb、Hg含量均符合国家土壤质量二级标准值（GB 15618-1995）,无重金属污染风险;但As、Cr含量与沼液呈显著或极显著正相关,长期施用沼液有可能导致土壤As、Cr含量超标。
Bibliography:The effects of paddy field disposal of biogas slurry on rice production,heavy metal content in rice grain and straw,soil fertility and environment quality were investigated in field experiment with treatments of control （no fertilizer input） and different dosage of biogas slurry （200,400,600,800,1 000 m3/hm2）.Results showed that yield of rice grain and straw increased with biogas slurry application,the concentration of nitrogen（N）,phosphorus（P） and potassium（K） in rice straw and the concentration of N in rice grain enhanced,therefore,the accumulation of N,P and K were improved.With biogas slurry dosage increased,the concentration of arsenic （As） in rice straw enhanced compared to control,while the concentration of As in rice grain and lead （Pb） in rice grain and straw were not improved,however,the concentration of cadmium （Cd） in rice grain and straw decreased.The mercury （Hg） and chrome （Cr） were not detected in rice grain and straw in this experiment.Furthermore,the soil organic matter was enhanced with bio
ISSN:1004-874X
DOI:10.16768/j.issn.1004-874X.2016.10.013