| 喻成龙,汤建,郑琴,倪国荣,谢志坚,荣勤雷,郭乃嘉,王惠明,周春火.紫云英翻压条件下生物炭基肥配施量对水稻Cd迁移累积的影响[J].农业环境科学学报,2020,39(11):2554-2560. |
| 紫云英翻压条件下生物炭基肥配施量对水稻Cd迁移累积的影响 |
| Effects of biochar-based fertilizers on the migration and accumulation of Cd in rice under incorporation of Astragalus sinicus |
| 投稿时间：2020-07-06 |
| DOI：10.11654/jaes.2020-0759 |
| 中文关键词: 水稻 紫云英 生物炭基肥 Cd污染 |
| 英文关键词: rice Astragalus sinicus biochar-based fertilizers Cd pollution |
| 基金项目:国家重点研发计划项目（2017YFD0200808）；江西省重大科技研发专项（20194ABC28010）；江西省教育厅科学技术研究项目（GJJ170300，GJJ170265） |
| 作者 | 单位 | E-mail | | 喻成龙 | 江西农业大学国土资源与环境学院/江西省农业废弃物资源化利用与面源污染防控产教融合重点创新中心, 南昌 330045 | | | 汤建 | 江西农业大学国土资源与环境学院/江西省农业废弃物资源化利用与面源污染防控产教融合重点创新中心, 南昌 330045 | | | 郑琴 | 万年县农业农村局, 江西 万年 336100 | | | 倪国荣 | 江西农业大学国土资源与环境学院/江西省农业废弃物资源化利用与面源污染防控产教融合重点创新中心, 南昌 330045 | | | 谢志坚 | 江西农业大学国土资源与环境学院/江西省农业废弃物资源化利用与面源污染防控产教融合重点创新中心, 南昌 330045 | | | 荣勤雷 | 江西农业大学国土资源与环境学院/江西省农业废弃物资源化利用与面源污染防控产教融合重点创新中心, 南昌 330045 | | | 郭乃嘉 | 江西省农业生态与资源保护站, 南昌 330046 | | | 王惠明 | 江西省农业生态与资源保护站, 南昌 330046 | 923234200@qq.com | | 周春火 | 江西农业大学国土资源与环境学院/江西省农业废弃物资源化利用与面源污染防控产教融合重点创新中心, 南昌 330045
南昌市农业农田养分资源管理与农业面源污染防控重点实验室, 南昌 330045 | zchh3366@163.com |
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| 中文摘要: |
| 为探究翻压紫云英条件下，生物炭基肥配施量对水稻生长发育和水稻各器官Cd迁移积累的影响。通过盆栽试验，设置5个处理：紫云英替代30%的氮肥+70%氮肥（FNG30，对照）、30%紫云英+10%生物炭基肥+60%氮肥（FNG30B10）、30%紫云英+20%生物炭基肥+50%氮肥（FNG30B20）、30%紫云英+30%生物炭基肥+40%氮肥（FNG30B30）、30%紫云英+40%生物炭基肥+30%氮肥（FNG30B40），研究不同生物炭基肥配施量对早稻生长发育和水稻Cd迁移累积的影响。结果表明：与对照相比，生物炭基肥配施处理均能提高水稻籽粒的产量，且水稻籽粒产量随生物炭基肥配施量的增加而提高；生物炭基肥的配施可降低水稻糙米中的Cd含量，与对照相比，生物炭基肥配施后各处理降幅大小为FNG30B30（29.2%） > FNG30B20（20.8%） > FNG30B40（19.6%） > FNG30B10（8.3%）；生物炭基肥可抑制Cd从水稻根向地上部位的转运，在30%的生物炭基肥配施处理时抑制效果最为明显，且Cd从谷壳到糙米的转运能力最低。综上，在翻压紫云英条件下，配施生物炭基肥能有效降低水稻Cd污染风险，且30%的生物炭基肥配施量时降低稻田Cd污染风险效果最佳。 |
| 英文摘要: |
| This study aimed to investigate the effects of different dosages of biochar-based fertilizers on the growth and development of early season rice and the migration and accumulation of Cd in various rice organs under the incorporation of Astragalus sinicus. Five treatments were set up through pot experiments:control[A. sinicus in lieu of 30% nitrogen fertilizer + 70% nitrogen (FNG30)], 30% A. sinicus + 10% biochar-based fertilizers + 60% nitrogen (FNG30B10), 30% A. sinicus + 20% biochar-based fertilizers + 50% nitrogen (FNG30B20), 30% A. sinicus + 30% biochar-based fertilizers + 40% nitrogen (FNG30B30), and 30% A. sinicus + 40% biochar-based fertilizers + 30% nitrogen (FNG30B40). The results showed that compared with the control group, different dosages of biochar-based fertilizers could increase yield in rice grains. The yield in rice grains improved with the increase in the dosage of biochar-based fertilizers. The application of biochar-based fertilizers could reduce the Cd content in brown rice, compared to that in the control group; the decrease with each treatment application of biochar-based fertilizers was:FNG30B30 (29.2%) > FNG30B20 (20.8%) > FNG30B40 (19.6%) > FNG30B10 (8.3%). Biochar-based fertilizers could inhibit the transport of Cd from rice root to above ground parts, and the inhibition effect was most evident when the dosage of biochar fertilizers was 30%. At this point, the ability to transport Cd from rice husk to brown rice was also the lowest. To summarize, with the incorporation of A. sinicus, the application of biochar-based fertilizers can effectively reduce the risk of Cd pollution in the rice field. In addition, when the dosage of biochar-based fertilizers is 30%, the treatment effect on Cd pollution in the rice field is the best. |
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