Full
Outline
To explore the response patterns of dry matter accumulation, yield, and water use efficiency of ultra-late-sowing winter wheat Xindong 18 to drip irrigation amount, from 2021 to 2023, a randomized block design was employed in the field to study the differences of soil moisture content, leaf area index (LAI), dry matter accumulation, water use efficiency, and yield of ultra-late-sowing winter wheat unde the five drip irrigation treatments of W1 (1 800 m3·hm-2), W2 (2 250 m3·hm-2), W3 (2 700 m3·hm-2), W4 (3 150 m3·h m-2), and W5 (3 600 m3·hm-2). The results showed that increasing drip irrigation mainly enhanced soil moisture content in the 0-40 cm soil layer, decreased soil water consumption in the 40-100 cm soil layer, reduced soil water consumption, increased total field water consumption, and decreased the ratio of soil water consumption and precipitation to total water consumption. Increasing drip irrigation enhanced the LAI, total photosynthetic capacity, dry matter accumulation, post-flowering dry matter accumulation, contribution to yield, and water use efficiency, while reduced irrigation water use efficiency. Compared to W1, W5 exhibited increases in maximum LAI, total photosynthetic capacity, dry matter accumulation, post-flowering dry matter accumulation, and yield by 18.65%, 55.2%, 28.6%, 27.2%, and 51.6%, respectively. The yield and water use efficiency were higher under the treatments with drip irrigation amounts of 3 150 and 3 600 m3·hm-2 over the two years. Considering both yield and water use efficiency, the suitable drip irrigation amount for ultra-late-sowing winter wheat Xindong 18 is 2700-3 150 m3·hm-2 in the Ta’er Basin.
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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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