紫色土坡耕地耕层质量障碍特征
宋鸽,史东梅,曾小英,蒋光毅,江娜,叶青

Quality Barrier Characteristics of Cultivated Layer for Sloping Farmland in Purple Hilly Region
Ge SONG,DongMei SHI,XiaoYing ZENG,GuangYi JIANG,Na JIANG,Qing YE
表1 紫色土坡耕地耕层土壤属性指标及农作物产量
Table 1 Soil property index and crop yield of cultivated layer in purple soil slope farmland
地块号
Block
number
行政区域
Administrative
region
土壤紧实度
Soil compaction
耕层厚度
Topsoil
thickness
(cm)
心土层厚度
Subsoil layer thickness
(cm)
有效土层厚度Effective thickness
of soil layer
(cm)
田面坡度
Slope
(°)
土壤有机质
Soil organic
matter
(g·kg-1)
阳离子交换量
Cation exchange
capacity
( cmol(+)·L-1)
土壤全氮
Soil total
nitrogen
(g·kg-1)
土壤有效磷
Soil effective phosphate (mg·kg-1)
农作物产量
Crop
yield
(t·hm-2)
地力等级
Productivity
grade of
cultivated land
1 万州区
Wanzhou District
疏松
Loose
20 20 40 5 19.5 32.1 1.0 12 9.00 一级
First grade
2 万州区
Wanzhou District
疏松
Loose
22 23 45 5 10.0 27.6 0.7 10 6.75 二级
Secondary grade
3 万州区
Wanzhou District
疏松
Loose
20 30 50 10 9.7 16.3 0.9 3 5.25 三级
Third grade
4 万州区
Wanzhou District
疏松
Loose
15 5 20 15 7.0 19.9 0.4 10 4.50 四级
Fourth grade
5 万州区
Wanzhou District
疏松
Loose
20 0 20 25 9.9 18.9 0.8 3 4.50 五级
Fifth grade
6 云阳县
Yunyang Country
疏松
Loose
25 15 40 6 14.6 31.8 0.9 9 9.75 一级
First grade
7 云阳县
Yunyang Country
疏松
Loose
25 25 50 7 9.0 21.1 0.6 7 9.25 二级
Secondary grade
8 云阳县
Yunyang Country
较紧实
Relatively compact
24 16 40 12 19.9 22.4 1.4 6 8.00 三级
Third grade
9 云阳县
Yunyang Country
疏松
Loose
20 20 40 16 12.3 24.8 0.7 4 6.50 四级
Fourth grade
10 云阳县
Yunyang Country
松散
Unconsolidated
20 0 20 20 5.3 28.4 0.4 4 5.25 五级
Fifth grade
11 北碚区
Beibei District
疏松
Loose
20 15 35 5 12.4 28.4 0.9 18 9.00 一级
First grade
12 北碚区
Beibei District
疏松
Loose
19 21 40 5 12.9 24.7 1.0 6 7.88 二级
Secondary grade
13 北碚区
Beibei District
疏松
Loose
20 10 30 10 16.6 17.4 1.1 45 7.13 三级
Third grade
14 北碚区
Beibei District
疏松
Loose
25 0 25 15 10.0 20.8 0.6 1 6.38 四级
Fourth grade
15 北碚区
Beibei District
疏松
Loose
15 0 15 25 10.6 28.8 0.7 6 5.63 五级
Fifth grade
16 綦江区
Qijiang District
疏松
Loose
20 20 40 5 12.2 12.9 0.8 29 9.30 一级
First grade
17 綦江区
Qijiang District
较疏松
Relatively loose
20 20 40 12 14.4 22.6 1.3 6 6.00 二级
Secondary grade
18 綦江区
Qijiang District
疏松
Loose
20 15 35 10 16.9 18.3 1.1 104 5.25 三级
Third grade
19 綦江区
Qijiang District
疏松
Loose
25 15 40 11.5 16.8 12.7 0.6 19 4.50 四级
Fourth grade
20 綦江区
Qijiang District
疏松
Loose
20 0 20 25 18.7 0.1 1.0 139 4.12 五级
Fifth grade
21 江津区
Jiangjin District
疏松
Loose
15 15 30 5 14.0 28.6 1.2 2 6.38 一级
First grade
22 江津区
Jiangjin District
疏松
Loose
19 21 40 5 12.9 21.5 1.0 6 6.00 二级
Secondary grade
23 江津区
Jiangjin District
疏松
Loose
20 20 40 10 10.5 15.8 0.8 1 5.25 三级
Third grade
24 江津区
Jiangjin District
疏松
Loose
20 10 30 15 21.1 16.6 1.1 14 4.50 四级
Fourth grade
25 江津区
Jiangjin District
疏松
Loose
20 10 30 15 16.3 14.1 1.2 0 4.13 五级
Fifth grade
26 彭水县
Pengshui County
疏松
Loose
20 25 45 5 19.6 11.5 1.3 4 9.75 一级
First grade
27 彭水县
Pengshui County
疏松
Loose
20 20 40 7 15.6 12.2 1.0 27 9.10 二级
Secondary grade
28 彭水县
Pengshui County
疏松
Loose
20 10 30 14 14.0 16.5 1.1 8 7.75 三级
Third grade
29 彭水县
Pengshui County
疏松
Loose
20 0 20 16 9.6 25.4 1.2 9 6.00 四级
Fourth grade
30 彭水县
Pengshui County
较紧实
Relatively compact
20 0 20 22 23.4 10.4 1.5 4 5.55 五级
Fifth grade
31 巴南区
Banan District
较疏松
Relatively loose
20 10 30 5 22.8 13.0 1.3 51 9.75 一级
First grade
32 巴南区
Banan District
较疏松
Relatively loose
20 20 40 7 15.5 25.8 1.0 8 8.10 二级
Secondary grade
33 巴南区
Banan District
疏松
Loose
15 10 25 14 32.3 12.7 1.5 27 5.50 三级
Third grade
34 巴南区
Banan District
疏松
Loose
20 0 20 17 14.8 - 1.0 14 6.00 四级
Fourth grade
35 巴南区
Banan District
疏松
Loose
20 0 20 17 12.6 17.3 0.8 18 5.55 五级
Fifth grade