| 卢一富,李真理,阮心玲,李会勇,张红毅,田会阳,李立平.铅冶炼污染石灰性土壤上冬小麦间作伴矿景天的探讨[J].农业环境科学学报,2015,34(9):1686-1692. |
| 铅冶炼污染石灰性土壤上冬小麦间作伴矿景天的探讨 |
| Preliminary Investigation of Intercropping of Wheat with Cd Hyperaccumulator Sedum plumbizincicola on Calcareous, Lead Smelting Contaminated Soil |
| 投稿时间：2015-04-30 |
| DOI：10.11654/jaes.2015.09.009 |
| 中文关键词: 间作 冬小麦 伴矿景天 土壤 铅冶炼 |
| 英文关键词: intercropping winter wheat Sedum plumbizincicola soil lead smelting |
| 基金项目:“十二五”农村领域国家科技计划(2012AA101402-2);国家自然科学基金(41471253) |
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| 中文摘要: |
| 通过田间试验探讨了在河南省某铅冶炼污染石灰性土壤上冬小麦与镉超积累植物伴矿景天(Sedum plumbizincicola)间作的可行性。研究采用百农矮抗58和郑麦7698两个小麦品种,设置小麦单作和小麦与伴矿景天间作两种种植方式。结果表明,与单作相比,间作后土壤砷、镉和铅有效性均略有下降或持平。小麦与伴矿景天间作后,籽粒砷、镉和铅含量未出现显著差异(P>0.05),试验条件下小麦籽粒镉含量超过国家标准GB 2762—2012限值。间作伴矿景天地上部镉平均含量为23.4 mg·kg-1,小麦品种对伴矿景天地上部镉含量无明显影响。间作伴矿景天地上部对镉的积累量为2.12 g·hm-2。小麦与伴矿景天间作后,土壤有效氮和有效磷含量均有一定程度的上升(增加幅度2.87%~42.0%),间作对小麦籽粒产量存在一定的抑制作用(产量下降0.578%~5.57%)。试验条件下,冬小麦间作伴矿景天未起到改善小麦籽粒品质的作用,且间作条件下伴矿景天对土壤的修复能力较低。 |
| 英文摘要: |
| The effect of intercropping wheat(Triticum aestivum) with Cd hyperaccumulator Sedum plumbizincicola was investigated in a field experiment on calcareous, lead smelting contaminated soils in Henan Province. Wheat varieties Bainong Aikang 58 and Zhengmai 7698 were either monocultured or intercropped with Sedum plumbizincicola in alternating rows. Intercropping resulted in non-significant lower or similar extractability of soil As, Cd and Pb compared to the monocultured soil. No significant difference was found in grain concentrations of As, Cd and Pb between intercropped and monocultured wheat(P>0.05), grain Cd concentrations of all treatments exceeded the maximum permissible concentration set by national standard GB 2762—2012. Wheat variety had no influence on the Cd concentration of the hyperaccumulator, and mean shoot concentration of Cd was 23.4 mg·kg-1. Shoot accumulation of Cd of Sedum plumbizincicola was 2.12 g·hm-2. Availability of nitrogen(N) and phosphorus(P) in intercropped soil were 2.87%~42.0% higher than the monocultured soil, while the grain yields of the intercropped wheat were 0.578%~5.57% lower than the monocultured wheat. The results suggest that intercropping with alternating rows of wheat and Cd hyperaccumulator is not effective in reducing As, Cd and Pb concentrations in wheat grain, and the phytoextraction of Cd from the soil by the Sedum plumbizincicola is negligible. |
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