综合降镉(VIP)技术对降低糙米镉含量的影响研究
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摘要
以镉低积累型水稻品种湘晚籼12号为试验材料,采用随机区组设计,于2013年在长沙、衡南、湘潭和湘阴的12个试验点,比较了以VIP技术(V,Variety,选用低镉型水稻品种;I,Irrigation,优化水分管理;P,土壤p H值,施用石灰以提高土壤p H值)为主的5种控制技术在不同成土母质和土壤污染程度下的应用效果。结果表明,5种控制技术在各试验点的总效应中,以"VIP+Se"和"VIP+Se+Bi"的处理效果最为明显,其糙米镉含量均为0.15 mg/kg,与对照相比降镉效果显著。
The cadmium pollution of rice become increasingly serious, which caused enormous threats to human health and agricultur-al production. In order to find an effective way to control the cadmium content in rice, to meet the national safety levels and to provide a theoretical basis for the subsequent test, this study took the low-cadmium accumulation rice Xiangwanxian 12 as the experimental material by applying the randomized blocks design to explore and compare with five control technologies including VIP [low cadmium species(variety)+ reasonable irrigation(irrigation)+ adjust the acidity(p H)] and 12 test points that have different soil parent materials and extent of soil contamination. The result showed that the effect of"VIP + Se"and"VIP + Se + Bi"treatment were better than other treatments, and the effects of cadmium reduction were significant compared with the control.
The cadmium pollution of rice become increasingly serious, which caused enormous threats to human health and agricultur-al production. In order to find an effective way to control the cadmium content in rice, to meet the national safety levels and to provide a theoretical basis for the subsequent test, this study took the low-cadmium accumulation rice Xiangwanxian 12 as the experimental material by applying the randomized blocks design to explore and compare with five control technologies including VIP [low cadmium species(variety)+ reasonable irrigation(irrigation)+ adjust the acidity(p H)] and 12 test points that have different soil parent materials and extent of soil contamination. The result showed that the effect of"VIP + Se"and"VIP + Se + Bi"treatment were better than other treatments, and the effects of cadmium reduction were significant compared with the control.
引文
[1]刘国胜,何长顺,樊睿,等.土壤镉污染调查研究[J].四川环境,2004,23(5):8-10,13.
[2]魏益民,魏帅,郭波莉,等.含镉稻米的分布及治理技术概述[J].食品科学技术学报,2013,31(2):1-6.
[3]李雪林,张晓燕.中国1/5耕地受重金属污染土壤污染法正酝酿[J].资源与人居环境,2010(5):50.
[4]王静,林春野,陈瑜琦,等.中国村镇耕地污染现状原因及对策分析[J].中国土地科学,2012,26(2):25-30.
[5]贺慧,陈灿,郑华斌,等.不同基因型水稻镉吸收差异及镉对水稻的影响研究进展[J].作物研究,2014,28(2):211-215.
[6]唐绍清.稻米蒸煮和营养品质性状的QTL定位[D].杭州:浙江大学,2007.
[7]曾翔,张玉柱,王凯荣,等.不同品种水稻糙米含镉量差异[J].生态与农村环境学报,2006,22(1):67-69.
[2]魏益民,魏帅,郭波莉,等.含镉稻米的分布及治理技术概述[J].食品科学技术学报,2013,31(2):1-6.
[3]李雪林,张晓燕.中国1/5耕地受重金属污染土壤污染法正酝酿[J].资源与人居环境,2010(5):50.
[4]王静,林春野,陈瑜琦,等.中国村镇耕地污染现状原因及对策分析[J].中国土地科学,2012,26(2):25-30.
[5]贺慧,陈灿,郑华斌,等.不同基因型水稻镉吸收差异及镉对水稻的影响研究进展[J].作物研究,2014,28(2):211-215.
[6]唐绍清.稻米蒸煮和营养品质性状的QTL定位[D].杭州:浙江大学,2007.
[7]曾翔,张玉柱,王凯荣,等.不同品种水稻糙米含镉量差异[J].生态与农村环境学报,2006,22(1):67-69.