生物炭配施石灰降低稻米镉和铅积累的效果

doi:10.11924/j.issn.1000-6850.casb16120033

中国农学通报 ›› 2018, Vol. 34 ›› Issue (2): 54-59.doi: 10.11924/j.issn.1000-6850.casb16120033

所属专题：水稻

• 资源环境生态土壤气象 • 上一篇下一篇

生物炭配施石灰降低稻米镉和铅积累的效果

倪中应,章明奎

桐庐县农业和林业技术推广中心,浙江大学环境与资源学院

收稿日期:2016-12-06 修回日期:2017-02-17 接受日期:2017-02-21 出版日期:2018-01-23 发布日期:2018-01-23
通讯作者: 章明奎
基金资助:
国家科技支撑计划项目“东南城郊环保型集约化生态高值农业模式研究与示范”(2014BAD14B04)；浙江省农业厅“桐庐县农业‘两区’土壤污染治理试点试验”。

Combined Application of Biochar and Lime: Effect on Reducing Cadmium and Lead Accumulation in Rice

Received:2016-12-06 Revised:2017-02-17 Accepted:2017-02-21 Online:2018-01-23 Published:2018-01-23

摘要/Abstract

摘要： 为了解生物炭与石灰配合施用对降低稻米中重金属积累的效果,选择了两种酸度差异较大的重金属污染土壤(微酸性土和酸性土),分别设置了6个生物炭(BC)与石灰(LM)不同用量比例的水稻盆栽试验(包括0.00? 0.00%LM、0.40? 0.00%LM、0.30? 0.10%LM、0.20? 0.20%LM、0.10? 0.30%LM和0.00? 0.40%LM等处理),分析了稻米中镉和铅的积累及土壤中有效态镉和铅含量及镉和铅的化学形态组成。结果表明,等质量施用情况下,石灰比例越高施用后土壤pH值提升越大。对降低土壤中有效态镉和铅含量及稻米中镉和铅的积累以处理0.20? 0.20%LM(微酸性土)或0.10? 0.30%LM(酸性土)为最佳。对于土壤养分的维持而言,生物炭优于石灰的施用。综合降低稻米重金属镉和铅积累及改良土壤效果,生物炭与石灰配合施用好于石灰或生物炭的单独施用。

关键词: 石蒜, 石蒜, 石蒜碱, 提取工艺, 微波法, 常规溶剂法

Abstract: To understand the effect of combined application of biochar (BC) and lime (LM) on the accumulation of heavy metals in rice, we chose 2 kinds of soil (slight acid soil and acid soil) with different acidities as pot experimental soil for rice growth, to test the effects by the application of 6 different combined dosages of BC and LM( 6 treatments including 0.00%BC+0.00%LM, 0.40%BC+0.00%LM, 0.30%BC+0.10%LM, 0.20%BC+ 0.20%LM, 0.10%BC+0.30%LM, and 0.00%BC+0.40%LM) and analyzed accumulation of Cd and Pb in rice, and the available contents and chemical forms of Cd and Pb in soil. The results showed that: soil pH value increased with increasing proportion of lime under the same application mass of improvement agent; best combined dosages for reducing the accumulation of Cd and Pb in rice and soil available Cd and Pb was 0.20% BC+0.20% for the slight acid soil and 0.10%BC+0.30%LM for the acid soil; application of biochar was better for the maintenance of soil nutrients than the application of lime. Comprehensive consideration of the reduction of Cd and Pb accumulation in rice and the effect on soil improvement, combined application of biochar and lime is better than individual application of lime or biochar.

倪中应,章明奎. 生物炭配施石灰降低稻米镉和铅积累的效果[J]. 中国农学通报, 2018, 34(2): 54-59.

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生物炭配施石灰降低稻米镉和铅积累的效果

Combined Application of Biochar and Lime: Effect on Reducing Cadmium and Lead Accumulation in Rice

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