| 卢志红,谭雪明,朱美英,吴建富,石庆华,潘晓华.硫硅配施对土壤铜形态和水稻吸收铜的影响[J].农业环境科学学报,2013,32(9):1806-1813. |
| 硫硅配施对土壤铜形态和水稻吸收铜的影响 |
| Effect of Sulfur and Silicon on the Forms of Soil Copper and Absorption of Copper in Rice |
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| DOI：10.11654/jaes.2013.09.015 |
| 中文关键词: 水稻 硫 硅 铜 形态 |
| 英文关键词: rice sulfur silicon copper form |
| 基金项目: |
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| 摘要点击次数: 1962 |
| 全文下载次数: 2237 |
| 中文摘要: |
| 铜是江西省农田中主要重金属污染物之一，为减轻和控制铜对水稻生长的危害，提高水稻产量和品质，通过盆栽试验，研究不同硫肥（0、30、60、90 kg·hm-2，以S计）与硅肥（0、0.5、1.0、1.5 g·kg-1，以Si计）配施对水稻吸收铜及土壤铜形态的影响。结果表明：（1）在铜污染的农田中施用硫、硅肥都能降低土壤中酸可提取态Cu含量，提高残渣态Cu的含量，但土壤铁锰氧化物结合态Cu和有机物/硫化物结合态Cu含量因硫、硅用量不同而存在差异；（2）硫、硅各处理可通过促进铜在水稻根部累积或减少土壤有效态Cu的含量，减少铜在茎、叶、糙米中的吸收累积。从对糙米中铜含量及产量的影响可知，硫用量30 kg·hm-2和硅用量1.0 g·kg-1互作效果最佳，在生产上具有应用前景。 |
| 英文摘要: |
| Copper is one of the main heavy metal pollutants in farmland in Jiangxi Province. In order to reduce and control the harm of copper to rice growth and improve the yield and quality of rice, the effect of sulfur and silicon on the forms of soil copper and absorption of copper in rice were conducted by means of pot experiment. The treatments included different amounts of sulfur（0, 30, 60, and 90 kg·hm-2）and silicon（0, 0.5, 1.0, and 1.5 g·kg-1）.The results showed that（1）Application sulfur or silicon fertilizer could significantly decrease the soil acid-extractable and increase residual fraction copper content, while organic matter fraction copper content and the soil oxidizable fraction content varied with the amount of sulfur or silicon fertilizer in copper contaminated field; （2）sulfur or silicon can reduce the uptake of Cu by increasing the copper accumulation in the root of rice or decreasing the available forms of Cu in soil. In conclusion, it was more suitable with the sulfur content of 30 kg·hm-2 combination with the silicon content of 1.0 g·kg-1 to production when considered the influence of the copper content on brown rice and yield of rice. |
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