1 材料与方法
1.1 材料
1.2 方法
表1 试验各处理的施肥量Tab. 1 Amount of fertilization of different treatments in experiment |
| 处理 Treatment | 肥料用量 Amount of fertilization/[kg·(667 m2)-1] | ||
|---|---|---|---|
| 钙镁磷肥 Magnesium phosphate | 硫酸钾型复合肥 Compound fertilizer (K2SO4) | 有机肥 Organic fertilizer | |
| CK | 80 | 50.0 | 300 |
| T25 | 60 | 37.5 | 375 |
| T50 | 40 | 25.0 | 450 |
1.3 数据处理
2 结果与分析
2.1 有机肥部分代替化肥对甘蓝产量与生长的影响
图1 不同施肥处理下甘蓝的叶球形态及生物量A:甘蓝叶球形态;B:甘蓝纵切剖面图;C:甘蓝产量及生物量;D:甘蓝叶球形态评价指标。图内不同小写字母表示不同施肥处理间存在显著差异(P<0.05)。 Fig. 1 Biomass and leaf morphology of Chinese cabbage under different fertilization treatments A: The shape of Chinese cabbage; B: Chinese cabbage longitudinal section; C: Chinese cabbage yield and biomass; D: Chinese cabbage leaf shape evaluation index. Different lowercase letters in the figure indicate significant differences among different fertilization treatments (P<0.05). |
2.2 有机肥部分代替化肥对甘蓝品质的影响
表2 不同施肥处理下甘蓝品质差异性分析Tab. 2 Analysis on quality difference of Chinese cabbage under different fertilization treatments |
| 处理 Treatments | 硝酸盐 Nitrate/(mg·kg-1) | 亚硝酸盐 Nitrite/(mg·kg-1) | 维生素C Vitamin C/[mg·(100 g)-1] | 可溶性糖 Soluble sugar/% | 可溶性蛋白 Soluble protein/(mg·g-1) |
|---|---|---|---|---|---|
| CK | 26.3±1.30a | 0.86±0.044a | 31.0±1.56a | 11.50±0.57a | 1.00±0.089a |
| T25 | 20.3±1.26b | 0.82±0.041a | 28.7±1.54a | 9.13±0.78ab | 0.95±0.042a |
| T50 | 17.7±1.43b | 0.60±0.039b | 22.3±0.60b | 8.82±0.57b | 0.89±0.055a |
注:每个值都是由3个重复的平均值±标准误,不同字母表示差异达5%显著水平(P<0.05)。 | |
Note: Each value is the mean ±SE of three independent experiments. Different lowercase letters indicate significant differences between treatments (P<0.05). |
2.3 有机肥部分代替化肥对甘蓝光合作用的影响
表3 不同施肥处理间甘蓝的叶色指数及气体交换参数Tab. 3 Leaf color index and gas exchange parameters of Chinese cabbage under different fertilization treatments |
| 处理 Treatments | 氮平衡指数 NBI/(mg·L-1) | 叶绿素指数 Chl/(mg·L-1) | 净光合速率 Pn/(μmol·m-2·s-1) | 气孔导度 Gs/(μmol·m-2·s-1) | 蒸腾速率 Tr/(mmol·m-2·s-1) | 胞间浓度 Ci/(μmol·mol-1) |
|---|---|---|---|---|---|---|
| CK | 46.79±3.29a | 36.21±1.32a | 21.86±1.17a | 0.16±0.01a | 5.48±0.23a | 151.74±16.13a |
| T25 | 48.08±0.97a | 38.98±1.72a | 21.65±0.98a | 0.17±0.01a | 5.42±0.17a | 168.97±10.50a |
| T50 | 47.93±1.41a | 36.81±1.44a | 20.38±0.33a | 0.15±0.01a | 5.25±0.38a | 130.23± 6.13a |
注:每个值都是由3个重复的平均值±标准误,不同字母表示差异达5%显著水平(P<0.05)。 | |
Note: Each value is the mean±SE of three independent experiments. Different lowercase letters indicate significant differences between treatments (P<0.05). |
2.4 有机肥部分代替化肥对甘蓝根际微生物数量的影响
2.5 有机肥部分替代化肥对甘蓝根际土壤养分含量的影响
表4 不同施肥处理的甘蓝根际土壤养分含量变化Tab. 4 Change of soil nutrient content in cabbage rhizosphere under different fertilization treatments |
| 处理 Treatmets | pH | 有机质 Organic matter /(g·kg-1) | 全氮 Total N /(g·kg-1) | 全磷 Total P /(g·kg-1) | 全钾 Total K /(g·kg-1) | 碱解氮 Alkaline N /(mg·kg-1) | 有效磷 Available P /(mg·kg-1) | 速效钾 Available K /(mg·kg-1) | ||
|---|---|---|---|---|---|---|---|---|---|---|
| CK | 6.85±0.02b | 47.2±0.58a | 4.04±0.16a | 1.87±0.05b | 12.73±0.70a | 113.5±2.94a | 162.3±5.90a | 525±2.89a | ||
| T25 | 6.89±0.02b | 43.5±4.10a | 4.10±0.10a | 2.22±0.10a | 10.55±0.85ab | 116.5±5.99a | 162.0±5.69a | 490±7.64b | ||
| T50 | 7.03±0.02a | 45.2±2.65a | 3.33±0.04b | 1.99±0.02ab | 9.06±0.56b | 92.8±2.03b | 185.0±3.21a | 450±2.89c | ||
注:每个值都是由3个重复的平均值±标准误,不同字母表示差异达5%显著水平(P<0.05)。 | |
Note: Each value is the mean±SE of three independent experiments. Different lowercase letters indicate significant differences between treatments (P<0.05). |
