1 材料与方法
1.1 材料
1.2 方法
1.3 数据处理
2 结果与分析
2.1 间作模式促进植株生物量增加
图1 单作和间作模式下植株的鲜生物量图中数据为各处理的平均值±标准偏差,误差线为标准误,不同小写字母表示同一施氮量不同种植模式在0.05水平差异显著。 Fig. 1 Fresh biomass of plants under monoculture and intercropping Data were average ± standard deviation of each treatment in the chart, The error line is standard error, Different lowercase letters indicate significant differences in the same nitrogen rate among planting patterns at 0.05 level. |
图2 单作和间作模式下植株的干生物量图中数据为各处理的平均值±标准偏差,误差线为标准误,不同小写字母表示同一施氮量不同种植模式在0.05水平差异显著。 Fig. 2 Dry Biomass of plants under monoculture and intercropping Data were average ± standard deviation of each treatment in the chart, The error line is standard error, Different lowercase letters indicate significant differences in the same nitrogen rate among planting patterns at 0.05 level. |
2.2 间作模式促进植株全氮含量增加
表1 不同种植模式植株的全氮含量Tab. 1 Total nitrogen content of plants in different planting patterns mg•g‒1 |
| 处理 Treatment | 槟榔单作 Areca monoculture | 间作 Intercropping | 香草兰单作 Vanilla monoculture |
|---|---|---|---|
| CK | 15.99±1.78Ba | 16.42±0.72Ba | 16.80±0.99Ca |
| T1 | 18.22±2.62ABa | 19.23±2.71Ba | 18.95±1.47Ba |
| T2 | 20.93±2.58Aa | 18.31±0.89Ba | 19.56±0.79ABa |
| T3 | 22.68±2.27Aa | 23.79±2.12Aa | 21.16±0.87Aa |
注:表中数据为各处理的平均值±标准偏差(n=3),不同大写字母表示同一种植模式不同施氮处理在0.05水平差异显著,不同小写字母表示同一施氮处理不同种植模式在0.05水平差异显著。 | |
Note: The data were average ± standard deviation in each treatment, Different capital letters indicate significant differences in the same planting patterns among nitrogen rate at 0.05 level, Different lowercase letters indicate significant differences in the same nitrogen rate among planting patterns at 0.05 level. |
2.3 间作香草兰增加植株的吸氮量
表2 不同种植模式植株的吸氮量Tab. 2 Nitrogen uptake by plants under different planting patterns kg•hm‒2 |
| 处理 Treatment | 槟榔单作 Areca monoculture | 间作 Intercropping | 香草兰单作 Vanilla monoculture |
|---|---|---|---|
| CK | 34.31±18.38Ab | 58.21±2.45Ba | 34.92±3.06Bb |
| T1 | 50.85±6.74Ab | 98.65±14.09Aa | 61.88±19.60Ab |
| T2 | 58.21±17.76Ab | 106.00±23.89Aa | 53.92±2.45ABb |
| T3 | 71.07±39.21Aab | 112.13±7.35Aa | 61.88±8.57Ab |
2.4 间作香草兰影响土壤全氮含量不显著
表3 不同种植模式土壤全氮含量Tab. 3 Total nitrogen content in soil under different planting patterns g•kg‒1 |
| 处理 Treatment | 槟榔单作 Areca monoculture | 间作 Intercropping | 香草兰单作 Vanilla monoculture |
|---|---|---|---|
| CK | 1.53±0.19Ca | 1.34±0.05Ca | 1.41±0.03Ca |
| T1 | 1.90±0.05Ba | 1.79±0.18Ba | 1.76±0.04Ba |
| T2 | 2.29±0.09Aa | 2.00±0.26Ba | 1.99±0.19Ba |
| T3 | 2.29±0.25Aa | 2.39±0.08Aa | 2.47±0.16Aa |
2.5 间作香草兰提高植株氮素利用率
表4 不同施氮处理和种植模式下植株氮素利用情况Tab. 4 Nitrogen utilization of plants under nitrogen fertilizer treatments and planting patterns % |
| 处理 Treatment | 种植模式 Planting pattern | 测量部位 Measuring position | 氮吸收效率 Nitrogen absorption efficiency | 氮利用效率 Nitrogen use efficiency | 氮肥利用率 Nitrogen fertilizer use efficiency | 氮残留率Nitrogen residue |
|---|---|---|---|---|---|---|
| T1 | 单作 | 槟榔地上部 | 158.11±12.68a | 8.24±0.48a | 3.85±6.68a | 9.13±3.75a |
| 槟榔地下部 | 54.40±13.50a | 3.17±0.58a | 2.48±3.30a | |||
| 香草兰 | 251.92±80.93a | 13.31±4.11a | 10.98±7.30a | 8.79±1.07a | ||
| 间作 | 植株地上部 | 347.32±28.44a | 18.09±3.05a | 11.55±2.78a | 11.44±5.46a | |
| 植株地下部 | 56.74±30.74a | 3.22±2.01a | 3.99±4.28a | |||
| T2 | 单作 | 槟榔地上部 | 96.00±35.25ab | 4.54±2.01b | 1.11±3.47a | 9.46±3.52a |
| 槟榔地下部 | 25.18±5.21b | 1.28±0.42b | 3.03±4.14a | |||
| 香草兰 | 110.04±4.96b | 5.63±0.05b | 3.06±1.35a | 7.31±2.82a | ||
| 间作 | 植株地上部 | 190.84±32.61b | 10.19±1.81b | 5.78±3.04b | 8.24±3.04a | |
| 植株地下部 | 27.75±13.32a | 1.59±0.79a | 4.54±4.41a | |||
| T3 | 单作 | 槟榔地上部 | 83.07±44.14b | 3.93±2.26b | 0.89±2.77a | 7.55±3.16a |
| 槟榔地下部 | 30.63±18.62ab | 1.37±0.88b | 2.42±3.31a | |||
| 香草兰 | 101.44±14.44b | 4.79±0.63b | 2.44±1.09a | 10.58±1.59a | ||
| 间作 | 植株地上部 | 151.20±7.46b | 6.69±0.90b | 4.62±2.43b | 10.56±0.28a | |
| 植株地下部 | 27.26±4.12a | 1.05±0.08a | 3.63±3.53a |
注:香草兰植株主要根系为气生根,扎根在覆盖物中,未扎根进土壤里,香草兰地下部没有取得植株样本。 | |
Note: The roots of Vanilla were not embedded in the soil, so no plant samples were found underground. |
