| Cite this article: | 张廷龙,陈建平,陈桂平,等.春小麦耗水特征对播种方式及播量的响应[J].灌溉排水学报,0,():-. |
| Zhang Tinglong,Chen Jianping,Chen Guiping,et al.春小麦耗水特征对播种方式及播量的响应[J].灌溉排水学报,0,():-. |
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| Response of Water Consumption Characteristics of Wheat to Different Sowing Patterns and Seeding Rates |
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Zhang Tinglong1, Chen Jianping1, Chen Guiping2, Yin Wen2, Hu Falong2, Zhao Cai2, Fan Zhilong2
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1.Agricultural Technology Extension Service Center of Yongchang;2.Gansu Provincial Key Laboratory of Arid Land Crop Science/College of Agronomy, Gansu Agricultural University
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| Abstract: |
| 【Objective】Investigating the effects of different sowing patterns and sowing rates on water consumption characteristics and water use efficiency of spring wheat, to provide theoretical and practical basis for efficient of water resources use of spring wheat in arid irrigated region.【Method】Using split plot experiment design, the main plot for 2 sowing patterns: wide range sowing pattern and traditional strip sowing pattern, slip plot for 5 seeding rates: D1: 390 kg/hm2, D2: 420 kg/hm2, D3: 450 kg/hm2, D4: 480 kg/hm2 and D5: 510 kg/hm2. The water consumption amount, grain yield and water use efficiency of spring wheat were investigated. 【Result】The main effect factor on water consumption in each stage of spring wheat was seeding rates. In jointing-milk ripe and milk ripe-complete ripeness, the sowing patterns and seeding rates had significant interaction on water consumption of spring wheat. The water consumption of spring wheat with D4 in wide range sowing pattern received maximum value, but which with D3 in traditional strip sowing pattern. The grain yield of wide range sowing spring wheat in D2, D4 and D5 was 5.3%, 21.0% and 28.3% greater than that of traditional strip sowing, respectively. The greatest grain yield was observed with D4 in wide range sowing pattern, and with D3 in traditional strip sowing pattern. The grain yield of wide range sowing spring wheat with D4 was 8.8% greater than that of traditional strip sowing spring wheat with D3. The average yield increase of wide range sowing spring wheat was 8.4% with each 30 kg/hm2 increase of sowing rate, which was 133.2% greater than that of traditional strip sowing. The maximal WUE of spring wheat was received by wide range sowing D4 treatment, which was 6.6% greater than the maximal WUE of traditional strip sowing D3 treatment.【Conclusion】Seeding rates is the main effect factor of spring wheat population water consumption. Wide range sowing pattern can enhance the yield increase benefit of spring wheat by increasing seeding rates without increasing water consumption, so as to improve the WUE. Wide range sowing pattern combined with 480 kg/hm2 seeding rate can be referenced for increasing spring wheat yield and water use efficiency in the research region. |
| Key words: wide range sowing pattern; seeding rate; water consumption characteristics; water use efficiency; spring wheat |
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