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The study was aimed to study the effects of potassium fulvic acid (FA-K) and endophytic agents (single/combined) on the growth of sugarcane of Yuncane 08-1609 under the condition of halving the amount of conventional chemical fertilizers and to provide a reference for the subsequent research on high-efficiency organic compound bacterial fertilizer for increasing yield and weight loss in the sugar cane industry. The effects of endophytic agents on the growth of sugarcane seedlings and the growth-promoting effects of different fertilization formula treatment [conventional fertilizer application rate (F1), 50% conventional fertilizer application rate + potassium fulvic acid (F2)] and endophytic agent treatment on the growth of sugarcane seedlings and the interaction were investigated through soaking seed germination test and pot experiment. The “B9+YC89” compound agent could significantly promote the growth of sugarcane seedlings, compared with F1, F2 fertilization formula and endophytic agent could significantly improve agronomic traits, photosynthetic and physiological indexes of sugarcane seedlings, and F2 treatment could significantly increase stem diameter, fresh dry weight, +1 leaf area, root activity, photosynthetic index, soluble protein and soluble sugar content, and glutamine synthetase and glutamate synthase (GS and GOGAT) activities of sugarcane plants. F2“B9+YC89” treatment had the most significant effects on +1 leaf length, +1 leaf area, number of main stem leaves, dry weight, root activity, photosynthesis, soluble matter content and two enzyme activities. In summary, in sugarcane production, the use of “B9+YC89” compound microbial agent soaking and germination can promote the germination of sugarcane seedlings. Under the condition of 50% conventional chemical fertilizer, potassium fulvic acid further promoted the seedling growth of Yuncane 08-1609 compared with conventional chemical fertilizer treatment, and the combined application of potassium fulvic acid and “B9+YC89” compound microbial agent could effectively promote the seedling growth of Yuncane 08-1609. The study are conducive to promoting the development of weight loss and efficiency increase in sugarcane industry, and provide ideas for new cultivation and planting technologies.
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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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