To provide a scientific basis for screening the optimal time and intensity of post-sowing compaction for foxtail millet, an indoor pot experiment was conducted to investigate the effects of four compaction times [0 d (A1), 1 d (A2), 2 d (A3), and 3 d (A4) after sowing] and five compaction intensities [0 (T0), 0.25 (T1), 0.50 (T2), 0.75 (T3), and 1.00 kg/cm2 (T4)] on the emergence rate of dryland foxtail millet and soil physical properties. The results showed that the emergence rate of foxtail millet was the highest in the A1T3 treatment, reaching 80.77%, an increase of 28.57% compared to the A1T0 treatment. The emergence time was the shortest in the A1T3 treatment, lasting around five days. As the compaction intensity increased, the total soil porosity of all treatments gradually decreased, the soil bulk density gradually increased, and the deviation value of the soil three-phase ratio gradually decreased. Compared to the A1T0 combination, the total soil porosity in the A1T3 combination decreased by 17.67%, the bulk density increased by 62.96%, and the deviation value of the three-phase ratio decreased by 17.48%. In conclusion, immediate post-sowing compaction with an intensity of 0.75 kg/cm2 (A1T3) resulted in the best emergence quality of foxtail millet.
| 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 |