| Effects of water-nitrogen coupling on the growth and yield of oil sunflower in a drip-irrigated multiple cropping system |
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| DOI：10.7606/j.issn.1000-7601.2016.01.10 |
| Key Words: oil sunflower drip-irrigated multiple cropping water-nitrogen coupling growth yield |
| Author Name | Affiliation | | QUAN Li-shuang | College of Water & Architectural Engineering, Shihezi University, Shihezi, Xinjiang 832000, China
Key Laboratory of Modern Water-Saving Irrigation of Xinjiang Production & Construction Group, Shihezi University, Shihezi, Xinjiang 832000, China | | WANG Zhen-hua | College of Water & Architectural Engineering, Shihezi University, Shihezi, Xinjiang 832000, China
Key Laboratory of Modern Water-Saving Irrigation of Xinjiang Production & Construction Group, Shihezi University, Shihezi, Xinjiang 832000, China | | ZHENG Xu-rong | College of Water & Architectural Engineering, Shihezi University, Shihezi, Xinjiang 832000, China
Key Laboratory of Modern Water-Saving Irrigation of Xinjiang Production & Construction Group, Shihezi University, Shihezi, Xinjiang 832000, China | | PEI Lei | College of Water & Architectural Engineering, Shihezi University, Shihezi, Xinjiang 832000, China
Key Laboratory of Modern Water-Saving Irrigation of Xinjiang Production & Construction Group, Shihezi University, Shihezi, Xinjiang 832000, China |
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| Abstract: |
| In this study, both a field experiment and a lab investigation were conducted to examine the effects of water-nitrogen coupling on the growth and yield of oil sunflower in a drip-irrigated multiple cropping system in the Shihezi region of Northern Xinjiang. Xinkuiza No.5, an early-maturing variety commonly cultivated in the region, was used under drip-irrigated condition in a plot experiment that was completely randomized with two-factor (water and nitrogen) and three-level treatments. The results showed that with the water-nitrogen combination treatment of 3 000 m3 water per hm2 and 232 kg nitrogen per hm2, the maximum leaf area was achieved. The largest plant height was achieved during the vegetative growth stage. The largest head diameter and stem diameter and the highest amount of dry matter were also achieved. The highest seed setting rate, grain weight per head, thousand kernel weight and yield reached 96.97%, 112.96 g, 73.89 g and 3 597 kg·hm-2, respectively. Based on the effects of water-nitrogen coupling on the growth of drip-irrigated oil sunflower in a multiple cropping system, water and nitrogen fertilizer were recommended to be applied in the amounts of 3 000 m3·hm-2 and 232 kg·hm-2, respectively in the Shihezi region to obtain the highest yield. |
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