| Cite this article: | 宋鑫玥.条带种植模式下微喷带灌溉对冬小麦产量和耗水特性的影响[J].灌溉排水学报,0,():-. |
| songxinyue.条带种植模式下微喷带灌溉对冬小麦产量和耗水特性的影响[J].灌溉排水学报,0,():-. |
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| Effects of micro-sprinkling hoses irrigation on Yield and water consumption of Winter Wheat under strip planting mode |
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songxinyue
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Hebei Agriculyure University
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| Abstract: |
| 【Background】As the main winter wheat producing area, Hebei Plain has a decisive position in national food security and economic development.Affected by climatic conditions, rainfall in this area is mainly concentrated in July and August, which cannot meet the water required for wheat growth, and supplementary irrigation is needed. In production, groundwater extraction is often used for flood irrigation, which results in low water resource utilization rate, serious over exploitation of groundwater, and serious waste of water resources. Therefore, the development of water-saving irrigation technology has become an important way to achieve sustainable agricultural development.【Objective】The objective of this study was to alleviate the contradiction between scarcity of fresh water resources and the high water consumption of Winter Wheat in North China Plain, and solve the problem of low utilization rate of local water resources.【Method】Field experiments were conducted with winter wheat cultivar Jimai 22 during 2019 growing seasons. Five irrigation treatments were designed: 15 mm (W1), 22.5 mm (W2), 30 mm(W3), 37.5 mm(W4) were irrigated with strip planting micro sprinkling hoses at the jointing stage, the early stage of grain filling and the middle stage of grain filling (late May). CK, 60 mm at the jointing stage and the early stage of grain filling in the same row spacing conventional ground border irrigation. The water consumption characteristics, grain yield and water use characteristics of different irrigation treatments were evaluated.【Result】The total water consumption in wheat growth period was 306.46~399.4 mm. The proportion of soil water consumption of W1, W2, W3, W4 and CK was 44.2%, 42.97%, 41.24%, 40.15% and 38.41% respectively; with the increasing of irrigation amount, the proportion of irrigation water in the total water consumption increased; The water consumption of winter wheat was the largest from jointing to early filling stage, accounting for 45.33%~53.68% of the total growth stage. In different treatments under strip planting mode, water consumption from sowing to the early stage of grouting accounts for a large proportion of the total water consumption. But in CK, the proportion from the early stage of grouting to the mature stage was larger. Under the condition of micro-sprinkling hoses irrigation, the grain yield of winter wheat increased with increasing irrigation amount. The maximum yield was 9682.66 kg/hm2 in W4. The water use efficiency of W3 was the highest, increased by 7.54% compared with CK.【Conclusion】Therefore, as far as high-yield and high-water use efficiency in this experimental, the most appropriate treatment for recommendation was the one which the irrigation amount of micro-sprinkling hoses is 135~157.5 mm and the water consumption is 367.5~400 mm. |
| Key words: winter wheat; micro-sprinkling hoses irrigation; irrigation amount; water consumption characteristics; yield |
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