摘要
为筛选出适用于稻渔综合种养模式的降镉修复材料,以稻虾轮作模式为研究对象,分析了添加稀太太(硒肥)、猛降镉(硅肥)、修护龙(≥40%CaO)和石灰(≥90%CaO)4种修复材料对稻米Cd含量的影响及其与土壤肥力(pH值、有机质、碱解氮、有效磷、速效钾含量)的关系,并采用层次分析法对4种材料修复效果进行了综合评估。结果表明:添加稀太太、猛降镉和修护龙能显著降低稻米Cd含量,下降幅度分别为74.51%、63.06%和61.19%;但4种修复材料对水稻产量均未有显著提升作用。通过土壤肥力分析,发现添加石灰和修护龙这2种修复材料对土壤pH值的影响居前2位,与对照相比分别上升了0.42和0.87个单位;土壤有机质和碱解氮含量在稀太太处理下增幅最大,分别为4.29%和20.92%;各修复材料对土壤有效磷和速效钾含量影响较小,均未发生显著性变化。综合评估结果,稀太太和猛降镉的修复效果最好。
In order to select the cadmium reduction and remediation materials suitable for the rice-fishing model,the effects of xitaitai(selenium fertilizer),mengjiangge(silicon fertilizer),xiuhulong(≥40%CaO)and lime(≥90%CaO)on Cd content in rice and its relationship with soil quality(soil pH value,oil organic matter,alkali hydrolyzable nitrogen,available phosphorus and available potassium)were studied,The repair effect of each material was comprehensively evaluated by analytic hierarchy process.The results showed that the Cd content of rice significantly decreased by 74.51%,63.06%and 61.19%respectively.However,the four restoration materials had no significant effect on rice yield.Through the analysis of soil quality,it was found that the addition of lime and xiuhulong had the greatest impact on soil pH,which increased by 0.42 and 0.87 respectively compared with the control.The contents of soil organic matter and alkali hydrolyzable nitrogen increased the most in xitaitai treatment,which were 4.29%and 20.92%respectively.The contents of soil available phosphorus and available potassium were less affected by the remediation materials,and there was no significant change.The comprehensive evaluation results showed that the repair effect of xitaitai and mengjiangge was the best.
作者
丁蕾
田威
倪才英
董泽民
黎衍亮
肖罗长
刘鑫
刘星星
梁以豪
DING Lei;TIAN Wei;NI Cai-ying;DONG Ze-min;LI Yan-liang;XIAO Luo-chang;LIU Xin;LIU Xing-xing;LIANG Yi-hao(Jiangxi Agricultural Technology Extension Center,Nanchang 330046,China;Korla Bureau of Natural Resources,Korla 841000,China;School of Geography and Environment,Jiangxi Normal University,Nanchang 330022,China)
出处
《江西农业学报》
CAS
2023年第5期130-136,共7页
Acta Agriculturae Jiangxi
基金
国家自然科学基金项目(4216070334)
江西省现代农业产业技术体系建设专项(JXARS-12-环境控制)。
关键词
稻虾轮作
重金属
修复
层次分析
Rice-shrimp rotation
Heavy metal
Remediation
AHP
