摘要
[Objectives]The effects of"Glimmer"treatment on dry matter accumulation,yield and cadmium accumulation in different types of rice varieties were investigated,in order to provide a theoretical basis for the regulation of low cadmium accumulation in rice grains.[Methods]Under the treatment of cadmium contaminated soil with a concentration of 0.58 mg/kg,the effects of"Glimmer"treatment on dry matter accumulation,yield and cadmium content of different rice varieties were studied by pot experiment.[Results]Spraying"Glimmer"can increase the biological yield of rice,and the different types of rice showed the order of conventional rice>two-line hybrid rice>three-line hybrid rice.Among the conventional rice,most significant increase was observed in Huanghuazhan,and in two-line hybrid rice,C Liangyou 651 increased the most.The"Glimmer"treatment had an obvious yield increasing effect on conventional rice,among which such two varieties as Xiangwanxian 13 and Huanghuazhan had the largest increases,followed by the two-line hybrid rice,and a little effect was observed on the three-line hybrid rice.The"Glimmer"treatment resulted in a significant reduction in cadmium content in different types of rice,which decreased by 13.33%-26.09%,and seven varieties showed a reduction over 21.74%.[Conclusions]The"Glimmer"treatment can significantly reduce the cadmium content in rice,and generally promote the dry matter accumulation and yield increase of rice,of which conventional rice performed better.
[Objectives] The effects of "Glimmer" treatment on dry matter accumulation, yield and cadmium accumulation in different types of rice varieties were investigated, in order to provide a theoretical basis for the regulation of low cadmium accumulation in rice grains. [Methods] Under the treatment of cadmium contaminated soil with a concentration of 0.58 mg/kg, the effects of "Glimmer" treatment on dry matter accumulation, yield and cadmium content of different rice varieties were studied by pot experiment. [Results] Spraying "Glimmer" can increase the biological yield of rice, and the different types of rice showed the order of conventional rice>two-line hybrid rice>three-line hybrid rice. Among the conventional rice, most significant increase was observed in Huanghuazhan, and in two-line hybrid rice, C Liangyou 651 increased the most. The "Glimmer" treatment had an obvious yield increasing effect on conventional rice, among which such two varieties as Xiangwanxian 13 and Huanghuazhan had the largest increases, followed by the two-line hybrid rice, and a little effect was observed on the three-line hybrid rice. The "Glimmer" treatment resulted in a significant reduction in cadmium content in different types of rice, which decreased by 13.33%-26.09%, and seven varieties showed a reduction over 21.74%. [Conclusions] The "Glimmer" treatment can significantly reduce the cadmium content in rice, and generally promote the dry matter accumulation and yield increase of rice, of which conventional rice performed better.
基金
Supported by Hunan Provincial Financial Fund
Hunan Hybrid Rice Research Center Project(38018136)