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Taking Jinghe River Basin in Gansu Province as the main research object, the Jinghe River trunk canal irrigation area in the upper reaches of Jinghe River was selected as a typical experimental irrigation area. The irrigation return water, farmland water content and crop growth trend of Jinghe River trunk canal irrigation area were monitored. The water consumption of Jinghe River trunk canal irrigation area was tested by the combination of diversion and drainage difference method and multi-level soil water balance model (VSMB model). According to the monitoring experiment, the total water diversion volume of Jinghe River main canal irrigation area in 2018 is 20.76 million m3, and the total water return volume is 5.23 million m3. The water consumption coefficient of Jinghe River main canal irrigation area is 0.56 by using the diversion and drainage difference method. The total annual water diversion of typical plots in Gannong experimental field is 1 901 m3, and there is no retreating water on the surface. The water consumption coefficient obtained by diversion and discharge difference method is 0.75, and the water consumption coefficient obtained by VSMB model is 0.71. The research results provide reference for the study of water consumption coefficient of other agricultural irrigation areas in Jinghe area, and have certain guiding significance for irrigation area planning and design and high-efficiency agricultural irrigation pilot work.
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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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