In order to explore the effects of N, P and K fertilizers on the growth and nutrient uptake of areca nut seedlings and provide a scientific fertilizer application in field management, areca nut seedlings were used to conduct the “3414”fertilizer ratio in pots at the greenhouse. Fertilization significantly increased biomass and fertilizer utilization of areca nut seedlings. In balanced nitrogen, phosphorus and potassium fertilization, N and P fertilizers had the maximum utilization. Balanced nitrogen and potassium fertilization without phosphate fertilizer, K fertilizers had the maximum utilization. The N content was the main factor affecting the stem and leaf biomass, while the P content was the main factor affecting root biomass. Correlation and path analysis indicated that N and P could synergistically improve the growth of areca nut seedlings, but they were affected by the application of K fertilizer. However, N, P and K fertilizers could reach balance and synergy to improve the growth of seedlings. In conclusion, N, P and K fertilizers in a rational proportion was beneficial for the nutrient uptake and utilization of areca nut seedlings, and N∶P∶K=2∶2∶2 (T6) was the most suitable fertilization ratio.
| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |