土层/cm | 土豆滴灌 | 大豆滴灌 | 谷子滴灌 | 油菜滴灌 | 胡萝卜滴灌 | 苜蓿滴灌 | 滴灌平均 |
20 | 18 | 21 | 20 | 17 | 14 | 20 | 18 |
40 | 16 | 17 | 7 | 4 | 8 | 11 | 10 |
60 | 9 | 11 | 12 | 9 | 5 | 4 | 8 |
80 | 4 | 5 | 3 | 3 | 5 | 1 | 3 |
100 | 3 | 3 | 3 | 2 | 0 | 2 | 2 |
120 | 2 | 3 | 0 | 0 | 1 | 0 | 1 |
140 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
∑ | 52 | 60 | 45 | 35 | 34 | 38 | 44 |