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Mikania micrantha is one of the first invasive species in China, which poses a big threat to the ecological security of subtropical regions. Soil enzyme activity inhibitors and plant growth regulators play central roles in plant growth regulation. In this paper, the effects of different concentrations of soil enzyme activity inhibitors [1 g/L and 15 g/L NBPT, N-(N-butyl) thiophosphate triamide, 1 g/L and 15 g/L nitrification inhibitor DMPP] and exogenous plant regulators (25 mg/L and 50 mg/L ABA, abscisic acid, 1 g/L and 10 g/L CCC, chlormequat) on the growth of M. micrantha during its vigorous growth period, budding period, flowering period, peak flowering period, and seed setting period were studied through a 7-month continuous pot culture experiment. The results showed that high and low concentrations of soil enzyme activity inhibitors and plant growth regulators had different effects on the growth status of chamomile and the content of alkaline hydrolyzed nitrogen and available phosphorus in the soil. Among them, chloramphenicol and DMPP had a significant inhibitory effect on chamomile, while 15 g/L NBPT had a promoting effect on chamomile growth. In summary, 10 g/L chloramphenicol had an inhibitory effect on the vigorous growth of chamomile, while 15 g/L DMPP had an inhibitory effect on the vigorous flowering period of chamomile. The combined application of the two could provide a theoretical basis for the comprehensive prevention and control of chamomile throughout its lifecycle.
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| 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 |
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