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 不同处理对烟草生物量和农艺性状的影响
表1 不同处理下烟草生物量和农艺性状Tab. 1 Biomass and agronomic characters of tobacco seedlings under different treatments |
| 处理 Treatment | 单株干重 Dry weight per plant/g | 株高 Plant height/cm | 茎粗 Stem diameter/mm | 最大节距 Maximum pitch/cm | 叶片数 Number of blades | 最大叶长 Maximum leaf length/cm | 最大叶宽 Maximum leaf width/cm | 最大根长 Maximum root length/cm | 根冠比 Root-shoot ratio |
|---|---|---|---|---|---|---|---|---|---|
| CK | 18.37e | 51.0e | 7.0c | 4.1c | 11.5b | 18.5c | 4.8c | 7.7c | 0.15a |
| MS | 24.77d | 64.5d | 7.5bc | 5.0bc | 13.5ab | 21.0bc | 7.5b | 10.3b | 0.16a |
| SF | 28.50c | 70.0cd | 9.5abc | 5.0bc | 14.3a | 24.0b | 10.5ab | 10.9b | 0.16a |
| C1 | 37.69b | 74.5bc | 9.3abc | 5.3b | 14.5a | 29.8a | 10.5ab | 12.3b | 0.16a |
| C2 | 40.47ab | 80.3ab | 10.5ab | 5.4ab | 15.3a | 31.5a | 11.5a | 12.5ab | 0.16a |
| C3 | 43.06a | 83.3a | 10.8a | 6.2a | 14.8a | 30.5a | 12.0a | 14.6a | 0.18a |
注:同列数据后不同字母表示差异显著(P<0.05)。 | |
Note: The data labeled with different lowercase letters in the same column are significantly different at 5%. |
2.2 不同处理对烟叶部分营养元素的影响
表2 不同处理下烟叶氮磷钾镁含量Tab. 2 N, P, K and Mg contents in leaves of tobacco under different treatments |
| 处理 Treatment | 养分含量Nutrient content/% | 单株养分累积量Nutrient accumulation per plant/g | ||||||
|---|---|---|---|---|---|---|---|---|
| N | P | K | Mg | N | P | K | Mg | |
| CK | 3.07b | 0.38b | 3.02b | 0.31c | 0.56c | 0.07d | 0.55e | 0.06d |
| MS | 3.14ab | 0.49a | 3.12b | 0.48ab | 0.78bc | 0.12c | 0.77d | 0.12c |
| SF | 3.11ab | 0.51a | 3.36a | 0.42b | 0.89b | 0.15bc | 0.95c | 0.12c |
| C1 | 3.22ab | 0.49a | 3.43a | 0.47ab | 1.22a | 0.18ab | 1.29b | 0.18b |
| C2 | 3.20ab | 0.50a | 3.38a | 0.50ab | 1.30a | 0.20a | 1.37ab | 0.20ab |
| C3 | 3.33a | 0.51a | 3.34a | 0.53a | 1.43a | 0.22a | 1.44a | 0.23a |
注:同列数据后不同字母表示差异显著(P<0.05)。 | |
Note: The data labeled with different lowercase letters in the same column are significantly different at 5%. |
2.3 不同处理对土壤pH的影响
2.4 不同处理对土壤有机碳含量的影响
2.5 不同处理对土壤养分含量的影响
表3 不同处理下土壤养分含量Tab. 3 Soil nutrient content under different treatments mg/kg |
| 处理 Treatment | 碱解氮 Alkaline nitrogen | 有效磷 Available phosphorus | 速效钾 Available potassium | 交换性钙 Exchangeable calcium | 交换性镁 Exchangeable magnesium |
|---|---|---|---|---|---|
| CK | 36.26c | 17.86b | 45.94c | 75.50d | 15.10f |
| MS | 38.37c | 18.75b | 50.14bc | 80.63d | 54.95d |
| SF | 39.38c | 20.74a | 61.27ab | 123.97c | 36.58e |
| C1 | 40.89bc | 21.15a | 56.16a | 131.28c | 79.54c |
| C2 | 44.82b | 26.69a | 63.04a | 192.30b | 105.50b |
| C3 | 51.81a | 28.57a | 61.43a | 266.53a | 119.15a |
注:同列数据后不同字母表示差异显著(P<0.05)。 | |
Note: The data labeled with different lowercase letters in the same column are significantly different at 5%. |
2.6 不同处理对土壤容重和总孔隙度的影响
表4 不同处理下的土壤容重和总孔隙度Tab. 4 Soil bulk density and total porosity under different treatments |
| 处理 Treatment | 土壤容重 Soil bulk density/(g·cm-3) | 总孔隙度 Total porosity |
|---|---|---|
| CK | 1.26a | 0.525c |
| MS | 1.26a | 0.530c |
| SF | 1.21b | 0.545b |
| C1 | 1.20b | 0.545b |
| C2 | 1.17c | 0.559a |
| C3 | 1.14c | 0.571a |
注:同列数据后不同字母表示差异显著(P<0.05)。 | |
Note: The data labeled with different lowercase letters in the same column are significantly different at 5%. |
