Analysis and Evaluation of Soil Nutrient of Tuoketuo Area in Inner Mongolia

Abstract

Abstract:

Hetao Plain is a typical kind of irrigated agriculture area in Inner Mongolia. This study focused on the Tuoketuo area in the east part of Hetao Plain. Totally 1,556 samples of the surface soil were analyzed based on the GeoExpl system and four soil nutrients including organic matter, nitrogen, phosphor and kalium in the top soil were analyzed. A fuzzy comprehensive assesment using the improved Nemerow index method is carried out. The result can reasonably reflect the region's soil nutrient quality; the soil nutrient is in the middle level. Among these soil nutrients, the maximum of the level is K and the minimum is N. P and K make primary contribution to soil nutrients and N is the primary restrictive factor of soil nutrient in this area. The total level of the soil nutrient in the north and the northwest area is better than other areas of Tuoketuo. Finally, with the analysis of the soil nutrient and the terrain, three different agricultural divisions are carried out. The plain in the northwest is considered as the best agricultural area.

Key words: soil nutrient, fuzzy comprehensive assesment, improved Nemerow index, agricultural division, Tuoketuo area, Inner Mongolia

CLC Number:

P595

ZHANG Feng-Yu, ZHU Yan, WANG Xi-Kuan, KANG Hong-Zai. Analysis and Evaluation of Soil Nutrient of Tuoketuo Area in Inner Mongolia[J]. Geoscience, 2010, 24(5): 1022-1028.

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