| Effects of soil amendment fertilizers on yield and water use efficiency of winter wheat |
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| DOI：10.7606/j.issn.1000-7601.2011.04.15 |
| Key Words: amendment fertilizer winter wheat WUE soil moisture content |
| Author Name | Affiliation | | ZHOU Lifeng | Research Center of Soil and Water Conservation and Ecological Environment, Chinese Academy of Sciences, Yangling, Shaanxi 712100, China
Graduate University, Chinese Academy of Sciences, Beijing 100049, China | | FENG Hao | Research Center of Soil and Water Conservation and Ecological Environment, Chinese Academy of Sciences, Yangling, Shaanxi 712100, China
Institute of Soil and Water Conservation, Northwest A & F University, Yangling, Shaanxi 712100 | | DU Jian | Institute of Soil and Water Conservation, Northwest A & F University, Yangling, Shaanxi 712100 |
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| Abstract: |
| Reasonable irrigation and fertilization are the key factors of production of winter wheat. This study is aimed at providing the scientific foundation for expanding the application of soil amendment fertilizers. A two-year experiment (2007～2009) was conducted to study the wheat yield and water use efficiency (WUE) under three varieties, kinds of irrigation and fertilizer treatments. The results are as follows: (1) Yield of winter wheat Xiaoyan 22 is respectively 11.41% and 15.85% higher than Xinong 979 and Xinong2000. (2) At low irrigation condition, AFS can sustain soil water at tilth (especially after flowering stage), the water storage of tilth is respectively 41.49 mm and 31.65 mm higher than AFW and normal fertilizer treatment (NFT); at high irrigati
on treatment, AFS inhibits soil water infiltration to ensure water supply in the high water consumption stage as seedling and jointing stage to promote wheat gr
owth and WUE. (3) Irrigating 120 mm and 180 mm, in the case of reducing 30% usage of chemical fertilizer, the wheat yield of AFS and AFW are respectively 26.93%, 17.68% and 29.42%, 17.44% higher than normal fertilizer treatment; WUE are respectively 24.39%, 17.07% and 26.17%, 18.69% higher than normal fertilizer treatment. The conclusions are as follows: (1) Winter wheat Xiaoyan 22 is the advantageous breed for water-saving irrigation in Guanzhong Irrigation District. (2) Amendment fertilizer of straw formula (AFS) can regulate soil water supply more efficiently than waste formula (AFW) and make soil sustain precipitation and irrigation effectively. (3) AFS has the optimum effect in saving water and increase yield of winter wheat. |
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