1 材料与方法
1.1 材料
1.2 方法
1.3 数据分析
2 结果与分析
2.1 不同种植密度对强分蘖甘蔗品种苗期甘蔗苗数的影响
表1 不同种植密度下强分蘖甘蔗分蘖盛期总苗数Tab. 1 The total number of tillers under different treatment at the peak time of tillering stage in sugarcane |
| 处理 Treatment | 2016年基本苗数 The basic shoots in 2016 | 2016年分蘖苗数 The tillers in 2016 | 2016年总苗数 The total shoots in 2016 | 2017年宿根总苗数 The total ratoons in 2017 | 平均增幅 Increased by/% |
|---|---|---|---|---|---|
| P1 | 185.00±14.47a | 148.00±12.24b | 333.00±26.69e | 418.00±56.17de | +25.55 |
| P2 | 233.00±4.84b | 204.00±22.42ab | 437.00±29.87cd | 499.00±42.68bcd | +14.11 |
| P3 | 339.00±13.31c | 231.00±7.23a | 570.00±13.23ab | 524.00±10.04bc | -8.18 |
| P4 | 416.00±18.22d | 209.00±19.04ab | 625.00±2.73a | 559.00±23.62ab | -10.57 |
Note: Different lowercase letters indicate significant differences among the different treatments (P<0.05). | |
注:不同小写字母表示各处理间差异显著(P<0.05)。 |
2.2 不同种植密度对强分蘖甘蔗品种株高和茎径的影响
表2 不同种植密度下强分蘖甘蔗成熟期株高和茎径Tab. 2 The plant height and its stem diameter of sugarcane variety with strong tillering under different treatment in the mature period |
| 处理Treatment | 株高Plant height/cm | 茎径Stem diameter/mm | ||
|---|---|---|---|---|
| 2016年新植蔗 Plant cane in 2016 | 2017年宿根蔗 Ratoon cane in 2017 | 2016年新植蔗 Plant cane in 2016 | 2017年宿根蔗 Ratoon cane in 2017 | |
| P1 | 324.53±15.12c | 380.72±16.46ab | 26.77±0.70a | 25.13±0.22b |
| P2 | 331.95±3.96c | 366.95±15.85b | 26.42±0.22ab | 25.17±0.65b |
| P3 | 332.92±6.29c | 397.63±4.31a | 25.75±0.69ab | 25.60±0.27ab |
| P4 | 352.50±7.18bc | 404.95±6.88a | 26.24±0.46ab | 25.11±0.70b |
Note: Different lowercase letters indicate significant differences among the different treatments (P<0.05). | |
注:不同小写字母表示各处理间差异显著(P<0.05)。 |
2.3 不同种植密度对强分蘖甘蔗品种有效茎、锤度和产量的影响
表3 不同种植密度下强分蘖甘蔗成熟期有效茎数、锤度和产量Tab. 3 The millable canes, Brix and yields of sugarcane variety with strong tillering under different treatment in the mature period |
| 处理 Treatment | 有效茎数 Number of millable canes in field plot | 产量 Yield/(kg∙plot-1) | 锤度 Brix/% | |||
|---|---|---|---|---|---|---|
| 2016年新植蔗 Plant cane in 2016 | 2017年宿根蔗 Ratoon cane in 2017 | 2016年新植蔗 Plant cane in 2016 | 2017年宿根蔗 Ratoon cane in 2017 | 2016年新植蔗 Plant cane in 2016 | 2017年宿根蔗 Ratoon cane in 2017 | |
| P1 | 258.00±8.01bc | 247.00±20.04c | 342.10±21.20bc | 424.77±29.59a | 17.33±0.74ab | 17.89±0.41ab |
| P2 | 245.00±10.14c | 269.00±13.09bc | 298.37±14.47c | 391.97±42.53ab | 16.58±0.16b | 18.29±0.28a |
| P3 | 291.00±4.63ab | 268.00±4.73bc | 384.73±9.88ab | 383.30±12.94ab | 16.63±0.91b | 18.24±0.05a |
| P4 | 316.00±7.16a | 284.00±5.29ab | 415.63±4.88a | 417.87±29.03a | 14.64±0.21c | 14.87±0.10c |
Note: Different lowercase letters indicate significant differences among the different treatments (P<0.05). | |
注:不同小写字母表示各处理间差异显著(P<0.05)。 |
2.4 种植密度与强分蘖甘蔗品种性状、产量及它们之间的相关关系
图1 种植密度与总苗数(A)、有效茎数(B)、株高(C)、茎径(D)、产量(E)以及锤度(F)的相关关系**表示对比性状间极显著相关(P<0.01)。 Fig. 1 Correlations of total number of shoots (A), number of millable canes (B), plant height (C), stem diameter (D), yield (E) and Brix (F) ** indicate extremely significant correlation among the different traits (P<0.01). |
表4 甘蔗产量与性状间的相关性系数Tab. 4 Correlation coefficient between sugarcane yield and its traits |
| 性状 Traits | 株高 Plant height | 茎径 Stem diameter | 有效茎数 Number of millable canes | 产量 Yield | 锤度 Brix |
|---|---|---|---|---|---|
| 总苗数Total number of shoots | 0.230 | -0.155 | 0.704** | 0.353 | -0.529** |
| 株高Plant height | -0.469* | 0.194 | 0.663** | -0.001 | |
| 茎径Stem diameter | 0.022 | -0.307 | -0.269 | ||
| 有效茎数Number of millable canes | 0.583** | -0.486** | |||
| 产量Yield | -0.134 |
Note: * indicate significant correlation among the different traits (P<0.05), ** indicate extremely significant correlation among the different traits (P<0.01). | |
注:*表示对比性状间显著相关(P<0.05),**表示对比性状间极显著相关(P<0.01)。 |
