[J].HEILONGJIANG AGRICULTURAL SCIENCES,2019,(06):47-49.[doi:10.11942/j.issn1002-2767.2019.06.0047]
生物炭对水稻镉吸收的影响
- 文献标志码:
- A
- 摘要:
- 为明确施用生物炭对水稻镉吸收的影响，研究了不同生物炭施用量(1.5%、3.0%、6.0%)对土壤pH、土壤有效态镉含量、水稻产量、水稻籽粒中镉含量的影响。结果表明：施用生物炭能够显著提高土壤pH，比对照组分别增加0.05,0.11,0.16。施用生物炭能够降低土壤中有效态镉的含量，比对照组分别降低2.4%、3.8%、7.1%。施用生物炭能够增加水稻产量，施用生物炭的3个处理水稻产量均高于对照处理，但差异不显著。施用生物炭能够抑制镉向水稻植株中迁移，显著降低水稻籽粒中镉的含量，比对照组分别降低20.2%、21.5%、25.8%。在镉污染土壤中施用生物炭可显著降低镉的有效性，降低了水稻镉污染的风险，对保障粮食安全具有重要意义。
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备注/Memo
收稿日期：2019-03-08