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Outline
To elucidate the effects of irrigation amount, sowing method, and seeding rate on the growth, yield, and quality of barley in the Hexi Corridor region, the malting barley cultivar Ganpi 6 was used as the experimental material. A split-plot design was adopted, with irrigation amount as the main plot factor (W1: 1 800 m3·hm-2; W2: 2 250 m3·hm-2; W3: 2 700 m3·hm-2; W4: 3 150 m3·hm-2), sowing method as the subplot factor (S1: Drilling with a sowing width of 3-5 cm and row spacing of 15 cm; S2: Wide-band uniform sowing with a sowing width of 10 cm and row spacing of 20 cm), and two seeding rates (D1: 248 kg·hm-2; D2: 284 kg·hm-2). The effects of different irrigation amounts, sowing methods, and seeding rates on yield and quality traits of malting barley were systematically analyzed, and the optimal cultivation pattern was determined using grey relational analysis. The results showed that the highest grain yield of Ganpi 6(7 926.69 kg·hm-2) was obtained under W3 (2 700 m3·hm-2), which was significantly higher than that under W1 and W4 by 23.2% and 6.1%, respectively, while showing no significant difference compared with W2. S2 significantly increased yield compared with S1 by 8.2%, and D1 significantly outperformed D2 by 3.2%. Grain protein content exhibited a decreasing-then-increasing trend across irrigation levels, following the order W1>W2>W4>W3, with W3 recording the lowest protein content (12.23%), which was significantly lower than that under W1 by 7.8% and showed no significant difference compared with W2 and W4. Comprehensive analysis of brewing quality indicated that S2 was superior to S1, and D1 was superior to D2. Grey relational analysis identified the W3S2D1 treatment combination as the optimal cultivation pattern, which effectively conserved irrigation water while achieving a balanced improvement in yield and quality. This regime is therefore recommended as a high-yield, high-quality, and water-saving cultivation model for malting barley production in the Hexi Corridor region.
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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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