| West of Jilin Province is the important oil-bearing grops production area and the sunflower is the main oil-bearing crop. To study ecology geochemistry characteristic of this area is valuable for sunflower planting, the development of the saline and alkali land and the agricultural division.This article is based on the different geological backgrounds of west of Jilin Province, combined with the theories of soil science, geochemistry and land resources, and takes the sediments - soil - sunflower as a system to study the low of the elements migration and analyze the impact of factors.The conclusions are as followed:1. Under the soil condition in Nong'an, the elements of the surface soil are abundant, with the exception of Mo significantly depleted; other elements are close to the background content. Most elements content of Daan work area lower than Nong'an area. The contents of Ca and Mn are close to the background content and the other seven elements are significantly depleted. The elements contents of Tongyu area are minimums. Fe, P, B, Mo, Mn, Zn and Cu are significantly depleted.2. As three different soil environment, certain elements contents in the profiles show different characteristics.Some elements of change in the profile show different characteristics, such as Cu, Mo, Zn element in the content below the surface of the bottom , leaching. P, Mn in the surface enrichment, MgO, Fe2O3 content with depth changes in smaller.CaO, B in different work areas show different characteristics.3. The results of effective coefficient show: Mn, Mo is in a high level; Ca and Cu is in the general level; P, Mg, Zn and B arewith weak transformation; Fe effective coefficient is minimum. To the alkalinity soil in the study area, the organic matter content of soil is low. The CEC is seriously influenced by soil granularity. The soil granularity plays the leading role to the soil element efficiency. Soil particle has a positive correlation with the elements release. Some elements of an effective state of the release of the full amount of effects, such as Mn, Mg, and Fe, Zn, and other effective parts of elements are difficult to release because of the Strong alkaline conditions.4. After analyzing the element content of sunflower seed in the different work areas, it is found that the different elements display the same and the close characteristics in the entire work area. The sunflower seed absorbs P intensely, and the absorption of Zn is medium. Mg, B, and Cu element are more weakly absorbed. Fe, Ca, Mn are extremely weak absorbed. The effective contents of Mn and Ca are rich in the soil, as a result of the sunflower seed to the element selective absorption; these elements' absorption coefficient is actually low.5. The study of the elements migration in the soil and sunflower found that: Fe, B, Zn, and other elements transport from soil to sunflower seed in the same or similar law; the enrichment of Cu, Ca in the soil is more than the extent of absorption of sunflower seeds. Mn, Mo with a higher degree of enrichment in the soil, but the content in sunflower seeds is very low. P, Zn enrichments in the soil are weak, but its absorption of sunflower seeds is very strong. The different laws of elements migration are mainly due to the impact of the soil environment and plants character.6. The sunflower seeds of the west of Jilin Province are rich in vitamin E,and the content is in the 35-60 mg/100g, with an average content of 43mg/100g. Protein content is among 18% -28%, and it is more even than others. Fat content of sunflower is smaller difference, between 32% -58%. It is found that the protein content in the sunflower seeds and Mg, Mn, Mo are significantly related; vitamin E content and Ca, Mo, Cu was significantly relate; fat content only significant correlated with Mn. |
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