1 材料与方法
1.1 材料
表1 4个油茶品种苗木基本信息Tab. 1 Base information of four different Camellia vietnamensis cultivars seedlings |
| 品种Cultivars | 苗高Height/cm | 地径Diameter/mm |
|---|---|---|
| 海油1号 | 25.60±4.07 | 3.90±1.58 |
| 海油2号 | 26.07±4.66 | 2.74±0.81 |
| 海油3号 | 24.07±4.37 | 3.93±1.07 |
| 海油4号 | 25.25±4.92 | 6.55±4.04 |
1.2 方法
1.3 指标测定
1.4 数据处理
2 结果与分析
2.1 生长量比较
表2 不同处理组对油茶品种苗高净生长量比较Tab. 2 Compareison of net growth of C. vietnamensis varieties seedlings in different treatments |
| 品种Species | CK | G30 | G60 |
|---|---|---|---|
| 海油1号 | 6.31±1.78Bb | 9.50±1.89Ab | 10.87±2.30Ab |
| 海油2号 | 10.25±9.15Ab | 11.73±2.34Ab | 12.66±2.38Ab |
| 海油3号 | 13.39±5.33Ba | 21.77±5.74Aa | 20.55±5.37Aa |
| 海油4号 | 8.60±1.65Bc | 14.21±3.58Ab | 14.62±3.13Ab |
注:不同小写字母表示同一处理不同品种间差异显著(P<0.05);不同大写字母表示同一品种不同处理间差异显著(P<0.05)。 | |
Note: Different lowercase letters mean significant difference between different species in the same treatment (P<0.05), and different capital letters mean significant difference between different treatments in the same tree species (P<0.05). |
表3 不同处理组对油茶品种生长量的方差分析Tab. 3 Variance analysis of seedling growth of C. vietnamensis in different treatments |
| 差异来源 Source of difference | 苗高 Height | 地径Diameter | 苗高/地径Height/Diameter | 苗高Height | 地径Diameter | 苗高Height | 地径Diameter | 苗高Height | 地径Diameter |
|---|---|---|---|---|---|---|---|---|---|
| III平方和 III squares | df | 均方Mean square | F | Sig. | |||||
| 油茶品种 | 657.589 | 10.984 | 3 | 219.196 | 3.661 | 167.228 | 42.131 | 0.000 | 0.000 |
| 处理组 | 131.888 | 0.470 | 2 | 65.944 | 0.235 | 50.310 | 2.707 | 0.000 | 0.087 |
| 交互作用 | 69.885 | 3.653 | 6 | 11.647 | 0.609 | 8.886 | 7.006 | 0.000 | 0.000 |
| 误差 | 31.458 | 2.086 | 24 | 1.311 | 0.087 | ||||
| 总计 | 6 340.951 | 265.414 | 36 | ||||||
表4 不同处理组对油茶品种地径净生长量的比较Tab. 4 Comparison of net diameter of C. vietnamensis varieties seedlings in different treatments |
| 品种Species | CK | G30 | G60 |
|---|---|---|---|
| 海油1号 | 2.09±0.79Ba | 2.92±0.77Aa | 3.51±0.55Aa |
| 海油2号 | 1.80±0.27Bb | 2.32±1.69Ba | 3.58±0.58Aa |
| 海油3号 | 2.71±0.75Aa | 2.78±0.62Aa | 2.69±0.67Aa |
| 海油4号 | 1.89±0.83Bb | 3.63±1.21Aa | 2.05±0.37Ba |
注:不同小写字母表示同一处理不同品种间差异显著(P<0.05);不同大写字母表示同一品种不同处理间差异显著(P<0.05)。 | |
Note: Different lowercase letters mean significant difference between different species in the same treatment (P<0.05), and different capital letters mean significant difference between different treatments in the same tree species (P<0.05). |
2.2 光合作用比较
图1 不同处理组油茶品种瞬时净光合速率比较不同小写字母表示同一处理不同品种间差异显著(P<0.05);不同大写字母表示同一品种不同处理间差异显著(P<0.05)。 Fig. 1 Comparison of instantaneous net photosynthetic rate of C. vietnamensis varieties seedlings in different treatments Different lowercase letters mean significant difference between different species in the same treatment (P<0.05), and different capital letters mean significant difference between different treatments in the same tree species (P<0.05). |
表5 不同处理组对油茶品种Pn和Tr方差分析Tab. 5 Variance analysis of Pn and of Tr of C. vietnamensis in different treatments |
| 差异来源 Source of difference | Pn | Tr | Pn/Tr | Pn | Tr | Pn | Tr | Pn | Tr |
|---|---|---|---|---|---|---|---|---|---|
| III平方和III squares | df | 均方Mean square | F | Sig. | |||||
| 油茶品种 | 16.778 | 6.181 | 3 | 5.593 | 2.060 | 46.416 | 25.249 | 0.000 | 0.000 |
| 处理组 | 0.843 | 0.587 | 2 | 0.422 | 0.293 | 3.500 | 3.597 | 0.046 | 0.043 |
| 交互作用 | 17.692 | 5.790 | 6 | 2.949 | 0.965 | 24.472 | 11.826 | 0.000 | 0.000 |
| 误差 | 2.892 | 1.958 | 24 | 0.120 | 0.082 | ||||
| 总计 | 958.114 | 70.094 | 36 | ||||||
图2 不同处理组油茶品种的瞬时蒸腾速率比较不同小写字母表示同一处理不同品种间差异显著(P<0.05);不同大写字母表示同一品种不同处理间差异显著(P<0.05)。 Fig. 2 Comparison of instantaneous net transpiration rate of C. vietnamensis varieties seedlings in different treatments Different lowercase letters mean significant difference between different species in the same treatment (P<0.05), and different capital letters mean significant difference between different treatments in the same tree species (P<0.05). |
2.3 叶片元素含量比较
表6 不同处理组对不同油茶品种叶片元素含量比较Tab. 6 Comparison of leaf elements content of C. vietnamensis varieties seedlings in different treatments |
| 处理组Treatments | TN /(g·kg-1) | TP /(g·kg-1) | TK /(g·kg-1) |
|---|---|---|---|
| 海油1-CK | 12.64±0.79Ba | 0.96±0.09Bb | 10.74±1.83Aa |
| 海油1-G30 | 22.91±2.42Aa | 1.80±0.17Aa | 12.38±1.41Ab |
| 海油1-G60 | 24.32±0.97Aa | 1.77±0.08Aa | 13.07±1.25Ab |
| 海油2-CK | 13.07±0.96Ba | 1.77±0.58Aa | 11.41±0.29Aa |
| 海油2-G30 | 20.08±3.28Aa | 2.34±0.33Aa | 12.20±0.20Ab |
| 海油2-G60 | 20.15±1.02Ab | 2.21±0.15Aa | 12.95±2.04Ab |
| 海油3-CK | 14.16±0.77Ba | 1.71±0.47Ba | 10.64±1.75Ba |
| 海油3-G30 | 25.18±0.96Aa | 2.55±0.17Aa | 16.47±1.80Aa |
| 海油3-G60 | 26.47±3.01Aa | 2.62±0.20Aa | 16.97±0.97Aa |
| 海油4-CK | 12.39±0.35Ba | 1.47±0.11Ab | 9.49±1.58Aa |
| 海油4-G30 | 21.67±1.63Aa | 1.78±0.03Ab | 12.11±1.07Ab |
| 海油4-G60 | 21.75±0.12Ab | 1.68±0.35Ab | 12.20±3.02Ab |
注:不同小写字母表示同一处理不同品种间差异显著(P<0.05);不同大写字母表示同一品种不同处理间差异显著(P<0.05)。 | |
Note: Different lowercase letters mean significant difference between different species in the same treatment (P<0.05), and different capital letters mean significant difference between different treatments in the same tree species (P<0.05). |
表7 不同处理组对油茶品种叶片元素含量的方差分析Tab. 7 Variance analysis of leaf elements content of C. vietnamensis in different treatments |
| 差异来源Source of difference | N | P | K | N/P/K | N | P | K | N | P | K | N | P | K |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| III平方和III squares | df | 均方Mean square | F | Sig. | |||||||||
| 油茶品种 | 7.852 | 4.310 | 12.336 | 3 | 2.617 | 1.437 | 4.112 | 1.911 | 8.988 | 1.269 | 0.155 | 0.000 | 0.308 |
| 处理组 | 13.317 | 0.095 | 0.508 | 2 | 6.658 | 0.047 | 0.254 | 4.862 | 0.296 | 0.078 | 0.017 | 0.747 | 0.925 |
| 交互作用 | 17.536 | 1.145 | 24.304 | 6 | 2.923 | 0.191 | 4.051 | 2.134 | 1.194 | 1.250 | 0.086 | 0.343 | 0.317 |
| 误差 | 32.865 | 3.836 | 77.795 | 24 | 1.369 | 0.160 | 3.241 | ||||||
| 总计 | 7 414.346 | 117.141 | 4 614.893 | 36 | |||||||||
2.4 相关性分析
表8 不同油茶品种生长、光合及叶片元素指标相关系数Tab. 8 Correlation coefficients among different features of C. oleifera varieties seedlings |
| 指标 Index | 苗高 Height/cm | 地径 Diameter/mm | Pn /(mmol·m-2·s-1) | Tr /(mmol·m-2·s-1) | TN /(g·kg-1) | TP /(g·kg-1) | TK (g/kg) |
|---|---|---|---|---|---|---|---|
| 苗高/cm | 1 | - | - | - | - | - | - |
| 地径/mm | 0.26 | 1 | - | - | - | - | - |
| Pn/(mmol·m-2·s-1) | 0.73** | 0.50 | 1 | - | - | - | - |
| Tr/(mmol·m-2·s-1) | 0.82** | 0.11 | 0.85** | 1 | - | - | - |
| TN/(g·kg-1) | 0.06 | 0.20 | 0.32 | 0.25 | 1 | - | - |
| TP/(g·kg-1) | 0.23 | -0.06 | 0.64* | 0.45 | 0.56 | 1 | - |
| TK/(g·kg-1) | -0.20 | 0.15 | 0.19 | -0.18 | 0.78** | 0.57 | 1 |
注:*表示在0.05水平(双侧)上显著相关,**表示在0.01水平(双侧)上极显著相关,“-”表示无数据。 | |
Note: *means significant correlation at the 0.05 level (double-sided), ** means extremely significant correlation at the 0.01 level (double- sided), “-” means no data. |
