Correlation Analysis of Selenium Content in Soil and Highland Barley Grains in Xizang
In order to clarify the selenium content of highland barley grain and cultivation soil in Xizang highland barley production area and the correlation between them,the soil and highland barley grain in 16 locations in Xizang highland barley production area were sampled and investigated.The results showed that the selenium content of soil in Xizang highland barley production area ranged from 0.039 2 to 0.672 3 mg/kg,of which 27.78％was selenium deficient soil,22.22％was moderate selenium soil,and 50％was selenium rich soil.The selenium content of barley grains ranged from 0.009 8 to 0.331 2 mg/kg,with 50％of the samples having insufficient selenium content.At the same time,there is a significant positive correlation between the selenium content of soil in Xizang highland barley production areas and the selenium content of highland barley grains.The experimental results of exploring the factors affecting the selenium content of soil and barley grains showed that there was no significant difference in the selenium content of barley grains among Zangqing 2000,Zangqing 320 and 5171 in the experiment.In addition,compared with conventional tillage,the powder ridge tillage technique did not have a significant effect on the selenium content of soil and Zangqing 3000 grains.However,under the same soil condition,the selenium content in the grains of the barley variety Dongqing 18 was significantly lower than that of the spring barley variety Zangqing 2000.
万方数据
维普
