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 甘蔗干物质积累与分配
表1 不同月份播种甘蔗干物质积累与分配Tab. 1 Dry matter accumulation and distribution in sugarcane planted in different months |
| 植期 Crop | 播期 Planting date | 积累量 Accumulation/(t·hm-2) | 分配率 Distribution/% | |||||
|---|---|---|---|---|---|---|---|---|
| 根 Root | 茎 Stalk | 叶 Leaf | 总量 Total amount | 根 Root | 茎 Stalk | 叶 Leaf | ||
| 新植蔗 | 2月 | 0.59±0.04a | 31.57±2.51a | 8.09±0.65a | 40.25±3.22a | 1.47±0.10c | 78.43±2.35a | 20.10±1.32c |
| 3月 | 0.57±0.03ab | 28.16±2.45b | 7.56±0.57b | 36.29±3.15b | 1.57±0.11b | 77.60±2.01a | 20.83±1.16bc | |
| 4月 | 0.55±0.04b | 26.76±2.40b | 7.53±0.60b | 34.84±3.10b | 1.58±0.12b | 76.81±1.98a | 21.61±1.23b | |
| 5月 | 0.48±0.03c | 14.36±1.12c | 7.30±0.64b | 22.14±1.80c | 2.17±0.14a | 64.86±1.96b | 32.97±1.48a | |
| 宿根蔗 | 2月 | 0.63±0.04c | 34.86±2.68b | 8.16±0.68b | 43.65±3.35b | 1.45±0.11c | 79.86±2.57a | 18.69±1.34a |
| 3月 | 0.72±0.05b | 38.06±2.81a | 8.94±0.71a | 47.72±3.51a | 1.51±0.10c | 79.76±2.01a | 18.73±1.15a | |
| 4月 | 0.74±0.04ab | 36.84±3.04ab | 8.98±0.80a | 46.56±3.85a | 1.59±0.09ab | 79.12±2.55a | 19.29±1.31a | |
| 5月 | 0.78±0.05a | 37.52±2.92a | 9.18±0.85a | 47.48±3.90a | 1.65±0.13a | 79.02±2.65a | 19.33±1.28a | |
注:同一植期同列数据后不同小写字母表示处理间差异显著(P<0.05)。 | |
Note: Different lowercase letters after the same column of data in the same column for the same cropr indicate significant difference (P<0.05). |
2.2 甘蔗氮积累与分配
表2 不同月份播种甘蔗氮积累与分配Tab. 2 Nitrogen accumulation and distribution in sugarcane planted in different months |
| 植期 Crop | 播期 Planting date | 积累量 Accumulation/(kg·hm-2) | 分配率 Distribution/% | |||||
|---|---|---|---|---|---|---|---|---|
| 根 Root | 茎 Stalk | 叶 Leaf | 总量 Total amount | 根 Root | 茎 Stalk | 叶 Leaf | ||
| 新植蔗 | 2月 | 2.90±0.25a | 131.92±8.52a | 44.73±3.05b | 179.55±12.25a | 1.62±0.14b | 73.47±2.51a | 24.91±1.25c |
| 3月 | 2.81±0.24ab | 120.89±8.04b | 45.24±3.16b | 168.94±11.35b | 1.66±0.12b | 71.56±2.49a | 26.78±1.41b | |
| 4月 | 2.73±0.24bc | 117.03±7.57b | 45.91±2.98b | 165.67±10.98b | 1.65±0.13b | 70.64±2.65a | 27.71±1.32b | |
| 5月 | 2.64±0.22c | 63.11±5.46c | 49.05±3.02a | 114.80±9.00c | 2.30±0.15a | 54.97±2.06b | 42.73±1.50a | |
| 宿根蔗 | 2月 | 3.21±0.26c | 132.47±9.05b | 47.49±3.58b | 183.17±12.50b | 1.75±0.12c | 72.32±2.77a | 25.93±1.15b |
| 3月 | 3.95±0.29b | 146.01±10.32a | 56.64±4.26a | 206.60±14.99a | 1.91±0.13b | 70.67±2.81a | 27.42±1.32a | |
| 4月 | 3.97±0.28b | 141.47±11.00a | 55.03±4.30a | 200.47±15.65a | 1.98±0.11ab | 70.57±2.19a | 27.45±1.20a | |
| 5月 | 4.44±0.31a | 149.58±11.31a | 58.35±4.01a | 212.37±15.41a | 2.09±0.12a | 70.43±2.43a | 27.48±1.45a | |
注:同一植期同列数据后不同小写字母表示处理间差异显著(P<0.05)。 | |
Note: Different lowercase letters after the same column of data in the same column for the same cropr indicate significant difference (P<0.05). |
2.3 甘蔗磷积累与分配
表3 不同月份播种甘蔗磷积累与分配Tab. 3 Phosphorus accumulation and distribution in sugarcane planted in different months |
| 植期 Crop | 播期 Planting date | 积累量Accumulation/(kg·hm-2) | 分配率Distribution/% | |||||
|---|---|---|---|---|---|---|---|---|
| 根 Root | 茎 Stalk | 叶 Leaf | 总量 Total amount | 根 Root | 茎 Stalk | 叶 Leaf | ||
| 新植蔗 | 2月 | 0.46±0.04a | 15.00±0.81a | 5.09±0.34c | 20.55±1.22a | 2.24±0.15b | 72.99±2.56a | 24.77±1.25d |
| 3月 | 0.44±0.03a | 13.26±0.68b | 5.52±0.35b | 19.22±1.10b | 2.29±0.13b | 68.99±2.31b | 28.72±1.43c | |
| 4月 | 0.41±0.03b | 11.64±0.54c | 5.57±0.29ab | 17.62±0.91c | 2.30±0.13b | 66.09±2.22b | 31.61±1.45b | |
| 5月 | 0.32±0.02c | 5.74±0.39d | 5.84±0.38a | 11.90±0.80d | 2.68±0.15a | 48.24±1.89c | 49.08±1.48a | |
| 宿根蔗 | 2月 | 0.51±0.04c | 16.56±0.75c | 5.97±0.40c | 23.04±1.20c | 2.21±0.14b | 71.88±2.44a | 25.91±1.24a |
| 3月 | 0.55±0.04b | 17.58±0.88ab | 6.47±0.33ab | 24.60±1.31ab | 2.24±0.13b | 71.46±2.57a | 26.30±1.20a | |
| 4月 | 0.56±0.03b | 17.08±0.80bc | 6.30±0.41b | 23.94±1.25bc | 2.26±0.14b | 71.40±2.46a | 26.34±1.31a | |
| 5月 | 0.62±0.04a | 18.21±0.95a | 6.75±0.41a | 25.58±1.43a | 2.42±0.12a | 71.19±2.33a | 26.39±1.19a | |
注:同一植期同列数据后不同小写字母表示处理间差异显著(P<0.05)。 | |
Note: Different lowercase letters after the same column of data in the same column for the same cropr indicate significant difference (P<0.05). |
2.4 甘蔗钾积累与分配
表4 不同月份播种甘蔗钾积累与分配Tab. 4 Potassium accumulation and distribution in sugarcane planted in different months |
| 植期 Crop | 播期 Planting date /month | 积累量Accumulation/(kg·hm-2) | 分配率Distribution/% | |||||
|---|---|---|---|---|---|---|---|---|
| 根 Root | 茎 Stalk | 叶 Leaf | 总量 Total amount | 根 Root | 茎 Stalk | 叶 Leaf | ||
| 新植蔗 | 2月 | 1.71±0.16a | 190.68±10.51a | 47.00±3.27b | 239.39±13.85a | 0.72±0.07c | 79.65±2.68a | 19.63±1.22c |
| 3月 | 1.68±0.16a | 162.76±9.25b | 47.10±3.01b | 211.54±12.56b | 0.79±0.06b | 76.94±2.55ab | 22.27±1.33b | |
| 4月 | 1.64±0.14a | 153.87±7.15c | 47.29±3.45b | 202.80±10.83b | 0.81±0.07b | 75.87±2.31b | 23.32±1.14b | |
| 5月 | 1.52±0.14b | 74.53±6.22d | 49.28±2.88a | 125.33±9.15c | 1.21±0.09a | 59.47±2.02c | 39.32±1.65a | |
| 宿根蔗 | 2月 | 1.73±0.15c | 205.33±13.77b | 56.55±4.33b | 263.61±18.40b | 0.66±0.05b | 77.98±2.44a | 21.45±1.18a |
| 3月 | 1.89±0.16b | 226.46±16.04a | 63.12±4.51a | 291.47±20.82a | 0.64±0.05b | 77.70±2.31a | 21.66±1.05a | |
| 4月 | 1.98±0.17b | 231.36±15.89a | 64.30±4.22a | 297.64±21.01a | 0.67±0.06b | 77.73±2.75a | 21.60±1.39a | |
| 5月 | 2.41±0.22a | 234.12±16.75a | 65.35±3.73a | 302.18±20.80a | 0.89±0.07a | 77.48±2.37a | 21.63±1.30a | |
注:同一植期同列数据后不同小写字母表示处理间差异显著(P<0.05)。 | |
Note: Different lowercase letters after the same column of data in the same column for the same cropr indicate significant difference (P<0.05). |
2.5 甘蔗养分经济效率
表5 不同月份播种甘蔗养分经济效率Tab. 5 Nutrient economic efficiency of sugarcane planted in different months kg/kg |
| 植期 Crop | 播期 Planting date | 氮 Nitrogen | 磷 Phosphorus | 钾 Potassium |
|---|---|---|---|---|
| 新植蔗 | 2月 | 175.85±15.51a | 1536.46±88.19a | 131.89±9.25a |
| 3月 | 166.67±13.22b | 1464.99±80.83b | 133.11±8.97a | |
| 4月 | 161.53±13.30b | 1518.76±70.46ab | 131.95±9.21a | |
| 5月 | 125.07±8.57c | 1206.59±60.97c | 114.56±8.64b | |
| 宿根蔗 | 2月 | 190.34±16.01a | 1513.21±83.26ab | 132.26±9.56a |
| 3月 | 184.24±15.45ab | 1547.34±90.35a | 130.60±10.08a | |
| 4月 | 183.79±16.62ab | 1539.00±85.66a | 123.79±8.04b | |
| 5月 | 176.66±14.21b | 1466.63±72.08b | 124.15±8.52b |
注:同一植期同列数据后不同小写字母表示处理间差异显著(P<0.05)。 | |
Note: Different lowercase letters after the same column of data in the same column for the same cropr indicate significant difference (P<0.05). |
