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 豇豆-水稻轮作模式对水稻生长性状的影响
表1 分蘖期水稻植株的营养生长指标Tab. 1 The growth traits of rice plants at the tillering stage |
| 处理 Treatment | 株高 Plant height/cm | 主茎粗 Main stem thick/mm | 分蘖数 Tillering number | 倒三叶面积 Area of converse third leaf/cm2 | 地上部干重 Shoot weight/g | 根长 Root length/cm | 根干重 Root weight/g |
|---|---|---|---|---|---|---|---|
| T1 | 95.7±1.7A | 9.5±0.2Aa | 37.7±3.4a | 58.0±9.1Aa | 60.29±6.97A | 20.7±2.3a | 5.95±1.34a |
| T2 CK | 68.1±3.7C 85.4±2.6B | 8.5±0.3Bc 9.1±0.2Ab | 23.3±3.4c 31.5±3.4b | 28.5±4.4Bb 33.7±3.3Bb | 19.92±2.36C 47.80±1.74B | 21.2±1.7a 22.5±1.4a | 3.72±1.51b 6.52±1.35a |
Note: The lowercase letters represent significant difference between treatments (P<0.05); the capital letters represent extremely significant difference between treatments (P<0.01). The data “±” is the standard deviation. | |
注:小写字母代表处理间存在显著性差异(P<0.05);大写字母代表处理间存在极显著性差异(P<0.01)。“±”后是标准差。 |
表2 分蘖期、成熟期水稻植株的含氮量Tab. 2 Nitrogen content in rice plants at the tillering stage and maturation stage |
| 处理 Treatment | 分蘖期 Tillering stage | 成熟期 Maturation stage | |||
|---|---|---|---|---|---|
| 根Root | 茎Shoot | 叶Leaf | 茎Shoot | 叶Leaf | |
| T1 | 0.89±0.14Aa | 0.75±0.14Aa | 2.36±0.02A | 0.21±0.08a | 0.71±0.06a |
| T2 | 0.41±0.06Bb | 0.16±0.01Bb | 1.37±0.09C | 0.19±0.02a | 0.61±0.02a |
| CK | 0.83±0.09Aa | 0.68±0.07Aa | 1.99±0.09B | 0.18±0.05a | 0.67±0.06a |
Note: The lowercase letters represent significant difference between treatments (P<0.05); the capital letters represent extremely significant difference between treatments (P<0.01). The data “±” is the standard deviation. | |
注:小写字母代表处理间存在显著性差异(P<0.05);大写字母代表处理间存在极显著性差异(P<0.01)。“±”后是标准差。 |
2.2 豇豆-水稻轮作模式对水稻产量构成的影响
表3 成熟期水稻的产量构成Tab. 3 Yield components of rice at maturation stage |
| 处理 Treatment | 株高 Plant height/cm | 穗数 Panicle number | 穗长 Panicle length/cm | 穗粒数 Grain number | 结实率 Seed setting rate/% | 千粒重 1000 grain weight/g | 理论产量 Theoretical yield/(t•hm-2) |
|---|---|---|---|---|---|---|---|
| T1 | 111.4±3.9Aa | 20.5±2.4Aa | 25.5±0.7a | 102.8±10.3b | 82.1±1.0B | 27.27±0.11a | 11.81±1.12Aa |
| T2 | 98.2±1.4Bb | 12.5±1.3Bb | 22.9±0.8b | 94.0±17.7b | 75.1±1.1C | 26.08±0.90b | 5.72±0.88Bb |
| CK | 99.6±1.3Ab | 15.0±1.8Bb | 23.8±1.5b | 126.9±15.5a | 85.2±1.1A | 27.95±0.53a | 11.29±1.39Aa |
Note: The lowercase letters represent significant difference between treatments (P<0.05); the capital letters represent extremely significant difference between treatments (P<0.01). The data “±” is the standard deviation. | |
注:小写字母代表处理间存在显著性差异(P<0.05);大写字母代表处理间存在极显著性差异(P<0.01)。“±”后是标准差。 |
2.3 豇豆-水稻轮作模式对稻米品质的影响
表4 豇豆-水稻轮作模式下稻米的品质指标Tab. 4 Quality parameters of rice under the mode of cowpea-rice rotation |
| 项目 Item | T1 | T2 | CK |
|---|---|---|---|
| 精米长 Milled rice length/mm | 7.74±0.20a | 7.61±0.27a | 7.71±0.15a |
| 精米宽 Milled rice width/mm | 1.89±0.05a | 1.85±0.07a | 1.88±0.04a |
| 精米长宽比 Length-width ratio | 4.10±0.19a | 4.12±0.20a | 4.11±0.10a |
| 垩白粒率 Chalky rice rate/% | 11.70±0.60Bb | 16.20±0.80Aa | 11.90±1.2Bb |
| 出糙率 Brown rice rate/% | 80.90±3.00a | 78.50±2.30a | 80.6±1.30a |
| 整精米率 Milled rice rate/% | 56.10±0.90Aa | 50.60±0.80Bb | 55.60±0.80Aa |
| 精米蛋白质含量 Protein content/% | 8.10±0.39a | 7.20±0.51b | 7.91±0.25a |
| 直链淀粉含量 Amylose content/% | 18.95±0.71a | 20.80±1.71a | 18.68±0.02a |
| 糊化温度(级) Gelatinization temperature | 4.50±0.53a | 3.77±0.49a | 4.63±0.15a |
| 胶稠度 Gel consistency/mm | 63.80±1.10Aa | 56.60±1.70Bb | 62.80±0.60Aa |
Note: The lowercase letters represent significant differences between treatments (P<0.05); the capital letters represent extremely significant differences between treatments (P<0.01). The data “±” is the standard deviation. | |
注:小写字母代表处理间存在显著性差异(P<0.05);大写字母代表处理间存在极显著性差异(P<0.01)。“±”后是标准偏差。 |
