绿色食品生产中土壤作物系统铅的积累与迁移研究

摘要/Abstract

摘要： 研究了Pb在土壤作物生态系统中的积累和迁移,并结合水稻绿色食品生产,进行了无机肥、有机肥和生物菌肥及其配比试验.结果表明,土壤全Pb含量随土层的加深而逐渐递减,收获后土壤全Pb含量在0～15和15～30cm分别为11.14和9.37mg·kg^-1.水稻根从土壤中吸收Pb,并向茎、叶和籽粒中迁移.在同一生长期,水稻植株不同部位全Pb累积态势为:根>茎叶>籽粒.在不同生长期,随水稻生长发育,全Pb含量缓慢增加,至收获时,606-14和辽粳294籽粒中全Pb含量分别为0.008和0.007mg·kg^-1,均低于绿色食品标准.方差分析表明,品种间产量差异显著;不同处理间产量差异不显著.试验结果表明,可以用有机肥或生物菌肥来代替无机肥进行水稻生产.

关键词: 绿色食品, 水稻, 土壤, Pb, 积累与迁移

Abstract: In this paper,the accumulation and translocation of lead in soil-crop ecosystems were studied through fertilization with chemical fertilizer,manure and bio-fertilizer.The results showed that the soil total Pb content was decreased with soil depth.It was 11.14 and 9.37 mg·kg^-1 in 0～15 and 15～30 cm after harvest,respectively.Rice root absorbed lead from soil,and transferred it to stem-leaf and grain.The Pb content in rice plant was root>stem and leaf>grain,which was increased with rice growth.The grains of 606-14 and Liao 294 contained 0.008 and 0.007 mg·kg^-1 of Pb,respectively,which is under the standard of green food.Variance analysis indicated that the grain yield of different varieties had a significant variance,but no significant variance was found among different treatments.It could be summarized that manure or bio-fertilizer could be the substitute of chemical fertilizer in producing rice.

Key words: Green food, Rice, Soil, Lead, Accumulation and translocation

中图分类号:

X171

李丽光, 何兴元, 曹志强, 陈玮. 绿色食品生产中土壤作物系统铅的积累与迁移研究[J]. 应用生态学报, 2004, (5): 891-894.

LI Liguang, HE Xingyuan, CAO Zhiqiang, CHEN Wei . Accumulation and translocation of lead in soil-crop system of green food production[J]. Chinese Journal of Applied Ecology, 2004, (5): 891-894.

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