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.
引文
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