| 组分 | |||
| 1 | 2 | 3 | 4 |
覆土厚度 | 0.028 | −0.081 | 0.395 | 0.686 |
全氮 | 0.112 | −0.030 | 0.561 | −0.173 |
有机质 | 0.073 | 0.235 | 0.437 | −0.486 |
pH | −0.235 | 0.197 | −0.067 | −0.175 |
电导率 | 0.273 | 0.116 | −0.165 | −0.106 |
有效磷 | −0.066 | 0.519 | 0.095 | 0.324 |
速效钾 | 0.235 | −0.073 | −0.050 | 0.171 |
铵态氮 | 0.144 | 0.500 | −0.164 | 0.107 |
硝态氮 | 0.283 | −0.062 | −0.123 | −0.037 |