Region | pH | Exch. Ca2+ [cmol(1/2Ca2+) kg−1] | Exch. Ma2+ [cmol(1/2Mg2+ kg−1] | ||||||
Low (%) | Suitable (%) | High (%) | Low (%) | Suitable (%) | High (%) | Low (%) | Suitable (%) | High (%) | |
Xuanzhou | 33.33 | 52.38 | 14.28 | 54.76 | 28.57 | 16.66 | 76.19 | 14.29 | 9.52 |
Langxi | 72.73 | 18.18 | 9.09 | 90.91 | 0 | 9.09 | 54.55 | 36.36 | 9.09 |
Jingde | 28.57 | 71.43 | 0 | 61.90 | 33.33 | 4.76 | 57.14 | 38.10 | 4.76 |
Jing | 31.03 | 48.28 | 20.69 | 55.17 | 24.14 | 20.69 | 72.41 | 24.14 | 3.45 |
Guangde | 46.15 | 53.85 | 0 | 69.23 | 23.08 | 7.69 | 84.62 | 7.69 | 7.69 |
Ningguo | 37.50 | 62.50 | 0 | 75.00 | 25.00 | 0 | 100.00 | 0 | 0 |
Total | 37.10 | 52.42 | 10.49 | 62.10 | 25.00 | 12.9 | 72.58 | 20.97 | 6.45 |