Assessing Spatio-Temporal Variability of Soil Phosphorus in Different Cotton-Based Cropping Systems Using Geo-Statistics

文献类型： 外文期刊

第一作者： Teng, Li

作者： Teng, Li;Shiwu, Xiong;Zhanbao, Wang;Xiaofei, Li;Yingchun, Han;Guoping, Wang;Yaping, Lei;Lu, Feng;Beifang, Yang;Xiaoyu, Zhi;Zhengyi, Fan;Yabing, Li

作者机构：

关键词： Soil Olsen-P; Wheat-cotton intercropping systems; Spatial distribution; Temporal distribution

期刊名称：JOURNAL OF SOIL SCIENCE AND PLANT NUTRITION （ 影响因子：3.9； 五年影响因子：3.9 ）

ISSN： 0718-9508

年卷期： 2023 年

页码：

收录情况： SCI

摘要： Purpose Phosphorus (P) is important for production in double-cropped wheat and cotton systems. The spatial distribution of soil Olsen-P has not been examined in these systems, and was quantified in the study reported here. Methods A two-year field experiment was conducted comprising mono-cotton as control (CM), and wheat-cotton 3:1 (3 rows of wheat, 1 row cotton), and wheat-cotton 6:2 (6 rows of wheat, 2 rows of cotton) cropping systems. Soil samples were collected spatially using the spatial grid method. The distribution of soil Olsen-P was analyzed using the Kriging method. Results The contour map could reflect the distribution of soil Olsen-P. The Olsen-P were concentrated near its application onto the soil surface and decreased with depth. And this distribution was changed by the uptake and interception of crop roots. The P concentrated in the cotton rows were quickly reduced, with little change in the middle of the two rows in the CM. When wheat existed, soil Olsen-P accumulated under wheat roots, and marginally moved horizontally to the cotton rows after wheat was harvested. Conclusions The geo-statistical method provided an effective method to display the distribution and movement of soil nutrients. The spatial and temporal distribution of Olsen-P was significantly affected by fertilization and crop uptake. In different cropping systems, difference in the competitiveness of crop also had significant impacts on the distribution of soil Olsen-P. The present study provided favorable information for exploring the relationship between plant and soil.

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