Research On The Influence Of Al-F Interaction On F In Rice Plant And Soil

Fluoride is widely distributed in nature, about crustal composition 0.78g/kg. Fluoride is essential trace elements and other animals, and its excessive intake can affect their growth and lack of health. Environmental chemistry system for the F soil hub. Fluoride pollution of soil and livestock not only directly harm the human body, it can be through drinking water and human and livestock food chain on the adverse health effects. Investigation into the formation of aluminum fluoride ions with different coordination number of aluminum fluoride complexes can significantly affect the presence of fluoride in the soil form, so this low fluoride content to black used in this study, the use of biological test pot of rice, by Artificially added fluoride to change the fluorine content in the soil to study the different ways of growing rice in the level of fluoride and its fluoride absorption law, and by adding different amounts of aluminum sulfate, aluminum fluoride to set a different ratio, to investigate the Al-F interaction Law on fluoride uptake by rice and soil fluoride content of various forms. The results obtained are as follows:1. Potted rice by different physiological and post-harvest rice plant during various parts of the total fluoride content determined, the results show that:single application of fluoride treatments, application of fluoride content and fluoride content between the rice plants had significant positive correlation between This shows that there is the luxury of rice to absorb the phenomenon of fluoride. However, different periods of rice samples showed that fluoride content in plants of time with the declining growth trend, which may be due to the late rice growing faster in the biomass increased more then absorbed fluoride to a certain The amount of dilution. Fluoride level of the facilities compared to the overall growth of rice plants was no significant difference in the situation, but the number of tillers but with the facilities and aluminum fluoride fluorine content ratio was significantly increased with the decreasing trend. Al-F interaction conditions, the rice plant fluoride content of various parts of the order of rice husk> m> root> stem. And aluminum sulfate treatment is not applied, compared handling facilities will reduce the aluminum sulfate in different parts of rice fluoride, but the same treatment sampled at different times, reducing fluoride effects were quite different.2. The pot of rice post-harvest soil in various forms of fluorine content, the results show that:For the single application of fluoride treatment, post-harvest soil fluorine and fluoride in the original distribution of soil showed different variation, the variation of different forms of fluoride are:Residual form>> exchangeable> water soluble> organic bound state> Mn bound. Where water soluble fluorine content increased significantly compared with the original soil, and greater than organic bound state; other form of fluoride content in the same trend with the original soil. Various forms of fluoride from fluoride increases with the amount of the trend, the trend was gradually weakened. Indicated that the soil adsorption of fluoride fluoride force with the increase of foreign diminishing, the trend has gradually reached equilibrium. Interaction of aluminum fluoride treatment trials, with and without aluminum sulfate treatment facilities compared to aluminum sulfate treatment facilities will reduce the soil content of the various forms of fluoride. But the various forms of fluoride in three different fluoride concentrations in the same percentage of aluminum sulfate treatment, are increased with the fluoride, but the increasing trend is diminishing.3. Aluminum fluoride do each laboratory simulation results show that:To observe the changes in fluoride content in soil, when the various forms of fluoride in the 1d basically reached the minimum, and as time increases, the middle was first decreased and then increased the trend, but Finally, the value reached more than 7d 1d, so to determine the various forms of fluoride in the soil adsorption time is 1d. Throughout all the various forms of culture time, the increase of aluminum fluoride with sulfuric acid presented the variation can be found under the incubation time in addition to various forms of organically bound fluorine fluorine percentage of aluminum sulfate were reached to the peak value of 0.2, and post-harvest pot Various forms of soil with aluminum sulfate added fluoride was gradually increased compared with the trends shown are different. But with the increase of aluminum sulfate was gradually decreased more consistent with its rules.