Correlation of karst agricultural geo-environment with non-karst agricultural geo-environment with respect to nutritive elements in Guizhou

The karst area accounts for 61.9% of the total area in Guizhou Province, which gives rise to a fragile environment and backward economy. Comparative studies on the element contents of rock and soil and agriculture production in both carbonate area and non-carbonate area have been made to establish f...

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Bibliographic Details
Published in:Acta geochimica 2011-12, Vol.30 (4), p.563-568
Main Authors: Chen, Rong, Bi, Kun
Format: Article
Language:English
Subjects:
Agricultural production
Agriculture
Carbonate rocks
Comparative studies
Correlation analysis
Earth and Environmental Science
Earth Sciences
Geochemistry
Karst
Nutrients
Nutrition
Trace elements
农业生产
农产品质量
地质环境
岩溶地区
微量元素含量
碳酸盐岩区
营养元素
贵州省
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Summary:The karst area accounts for 61.9% of the total area in Guizhou Province, which gives rise to a fragile environment and backward economy. Comparative studies on the element contents of rock and soil and agriculture production in both carbonate area and non-carbonate area have been made to establish factors leading to low output and poor quality of agricultural products in the karst area. The result shows that there is an apparent lack of nutrient elements in carbonate rocks. The trace element contents of carbonate rocks are only 3532.27×10-6, but those of non-carbonate rocks are 10894.21×10-6. The available element contents in cultivated soil delivered from carbonate rocks are merely 101.4×10-6, but those from non-carbonate rocks are 326.05×10-6. The available element contents and total element contents in cultivated soil delivered from non-carbonate rocks are 3 times higher than those from carbonate rocks. Besides, high-quality agricultural products such as rice, potato and tea are mainly produced in the non-carbonate area. It is indicated that the low output and quality of agricultural products are caused by the above-mentioned low trace element contents and poor agricultural environment. Therefore, a new method of mineral nutrients compensation has been put forward, which is very effective to raise the load-bearing capacity of agricultural environment, agricultural output and quality of agricultural products.
ISSN:1000-9426
2096-0956
1993-0364
2365-7499
DOI:10.1007/s11631-011-0540-4