《Table 6 Distribution characteristics of soil exchangeable calcium content in the Nandu River Basin
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《Distribution of Soil Nutrients in Nandu River Catchment basin of Hainan Island》
The average soil exchangeable magnesium in the research area is 239.9 mg/kg.The soil exchangeable magnesium content has a very wide variation range,from 0.8 to 9 403.4 mg/kg,with a very high variation coefficient of 229.0%.Only Lingao,Qiongshan and Danzhou all have an average soil exchangeable magnesium content of 120 mg/kg,and Danzhou has the highest value reaching441.6 mg/kg,while the average contents of other cities and counties are all lower than 90 mg/kg,and that of Qiongzhong is only46.4 mg/kg(Table 7),indicating that various cities and counties in the basin differ significantly in soil exchangeable magnesium content.
图表编号 | XD00183148700 严禁用于非法目的 |
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绘制时间 | 2018.10.01 |
作者 | Qing MAI、Xiongfei WANG、Rongxiang WANG、Hua WANG |
绘制单位 | Agricultural Science Institute of Tunchang、Hainan soil and fertilizer station、Tropical Crops Genetic Resources Institute CATAS、Tropical Crops Genetic Resources Institute CATAS |
更多格式 | 高清、无水印(增值服务) |
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