基本介紹
- 中文名:紅沙土
- 外文名:arenosol
- 母質:砂岩風化物
- 土體:A-B-C構型
- 土色:以橙色為主
- 表土:暗黃橙色
- 色調:7.5-10YR
- 亮度:5-6
- 彩度:3-4
- PH:多在6.5以下
- 陽離子交換量:僅5me/100g土左右
生產性能
紅沙土組
剖面形態特徵
0-15cm | 灰棕色重壤,土體較松 |
15-36cm | 灰棕色重壤,土體緊,有銹斑 |
36-59cm | 棕灰色輕粘土,銹斑紋多 |
59-76cm | 青灰色重粘土 |
76cm以下 | 黑色粘土(舊湖積物表土) |
0-16cm | 灰棕色中壤土,土體疏鬆,稍有粉粒 |
16-27cm | 淺黃棕色重壤土,土體緊實 |
27-60cm | 灰色粘土,塊狀,土體緊實 |
60-100cm | 瓦灰色粘土,塊狀,土體緊實 |
0-10cm | 暗灰棕色壤土,土體疏鬆,根銹多 |
10-23cm | 暗灰棕色壤土,土體稍緊實,有銹斑 |
23-36cm | 淺灰棕色重壤土,土體緊實 |
36-67cm | 棕灰色重壤土,土體緊實 |
67-100cm | 棕灰色粘土 |
土壤特性
紅沙土的機械成分 | |||||||||||
土種 | 采土 地點 | 分層 深度 (cm) | 機械成分(%)(粒徑:mm) | 質地 | |||||||
中沙 1- 0.25 | 細沙 0.25- 0.05 | 粗粉 0.05- 0.01 | 物理性沙 >0.01 | 中粉 0.01- 0.005 | 細粉 0.005- 0.001 | 粘粒 <0.001 | 物理性 粘粒 <0.01 | ||||
紅沙土 | 里下河 | 0-24 | 0 | 0 | 44.2 | 44.2 | 10.7 | 17.4 | 27.8 | 55.8 | 重壤土 |
24-53 | 0 | 3.0 | 31.0 | 34 | 16.0 | 14.5 | 35.5 | 66.0 | 輕壤土 | ||
53以下 | 0.5 | 3.5 | 37.0 | 41 | 18.0 | 80 | 33.0 | 59.0 | 重壤土 | ||
小粉漿土 | 里下河 | 0-14 | 0 | 0 | 45.0 | 45 | 10.7 | 16.3 | 28.0 | 55.0 | 重壤土 |
14-45 | 0 | 1.0 | 44.0 | 45 | 13.0 | 13.0 | 29.0 | 55.0 | 重壤土 | ||
45-88 | 1.0 | 1.5 | 35.5 | 38 | 14.5 | 14.5 | 33.0 | 62.0 | 輕壤土 | ||
88-100 | 0 | 1.0 | 36.0 | 37 | 15.0 | 16.5 | 31.5 | 63.0 | 輕壤土 | ||
島黃泥 | 常熟 任陽 公社 | 0-13 | --- | 6.0 | 54.5 | 60.5 | 9.5 | 13.5 | 16.5 | 39.5 | 中壤土 |
13-22 | --- | 6.5 | 51.0 | 57.5 | 11.5 | 13.5 | 17.5 | 42.5 | 中壤土 | ||
22-30 | --- | 3.0 | 41.5 | 45 | 15.5 | 15.0 | 25.0 | 55.0 | 重壤土 | ||
30-45 | --- | 0 | 34.5 | 34.5 | 18.5 | 17.0 | 30.0 | 65.5 | 輕壤土 | ||
45-60 | --- | 3.5 | 29.0 | 32.5 | 17.0 | 17.0 | 33.5 | 67.5 | 輕壤土 |
紅沙土的養分分析結果 | ||||||||
土種 | 地點 | 深度 (cm) | 有機質 (%) | 全氮量 (%) | 全磷量 (%) | 全鉀量 (%) | 代換量 (毫當量/100g土) | 酸鹼度 (PH) |
紅沙土 | 里下河 | 0-20 | 2.25 | 0.129 | 0.116 | 1.92 | 18.83 | 7.2 |
20-40 | 1.78 | 0.108 | 0.088 | 1.88 | 19.38 | 7.3 | ||
40-60 | 1.38 | 0.081 | --- | --- | 18.46 | 7.8 | ||
60-80 | 2.42 | 0.130 | --- | --- | 19.74 | 7.5 | ||
80-109 | 1.88 | --- | --- | --- | 14.81 | 7.3 | ||
小粉漿土 | 里下河 | 0-14 | 1.65 | 0.101 | 0.090 | --- | 14.97 | --- |
14-67 | 1.11 | 0.070 | 0.085 | --- | 18.93 | --- | ||
島黃泥 | 常熟任陽公社 | 0-13 | --- | 0.196 | 0.115 | --- | 19.93 | 7.8 |
13-22 | --- | 0.170 | 0.146 | --- | 22.00 | 7.9 | ||
22-30 | --- | 0.077 | 0.120 | --- | 23.19 | --- | ||
30-45 | --- | 0.056 | 0.069 | --- | 22.28 | --- | ||
45-60 | --- | 0.046 | 0.080 | --- | 25.68 | --- |