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Acta Agron Sin ›› 2009, Vol. 35 ›› Issue (8): 1552-1557.doi: 10.3724/SP.J.1006.2009.01552

• TILLAGE & CULTIVATION · PHYSIOLOGY & BIOCHEMISTRY • Previous Articles     Next Articles

Effects of Super Absorbent Polymer Application Rate on Yield and Quality of Naked Oat(Avenue nuda L.) in Two Irrigation Systems

WU Na1,ZHAO Bao-Ping1,**,ZENG Zhao-Hai1,REN Chang-Zhong2,GUO Lai-Chun2,CHEN Chang-Long,ZHAO Guo-Jun2,HU Yue-Gao1,*   

  1. 1 College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China; 2 Baicheng Academy of Agricultural Sciences, Baicheng 137000, China
  • Received:2009-01-05 Revised:2009-03-15 Online:2009-08-12 Published:2009-06-11
  • Contact: HU Yue-Gao, E-mail: huyuegao@cau.edu.cn

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Abstract:

Super absorbent polymer (SAP) and drip irrigation technique are water-saving measurements in several crops, such as wheat, maize, and tomato. Oat is a water-sensitive crop that requires a large amount of water during the growth period. Grain yield and quality of oat are affected by water condition. However, studies in this area are rare. In this study, the variation of grain yield, grain quality, mineral element contents and forage quality of naked oat were investigated under two irrigation systems (traditional irrigation and drip irrigation) and four levels of super absorbent polymer (0, 30, 60 and 90 kg ha-1). Compared with drip irrigation, grain yield under traditional irrigation was 14.78% higher, but crude protein, crude fat, and β-glucan content of grain decreased by 1.22%, 2.73%, and 3.36%, respectively. The difference between two irrigation systems was significant (P < 0.05). Calcium, magnesium, potassium, zinc and iron contents in grains were significantly higher in drip irrigation system than in traditional irrigation system, except for the manganese content. Relative feeding value, which varied from 122.38% to 135.67% in drip irrigation system, was significantly higher than that in traditional irrigation system (118.75%–134.44%). SAP had positive effect on grain yield of naked oat. In drip irrigation system, the grain yield increased by 2.95% to 12.14% when SAP was applied; it in traditional irrigation system increased by 1.1% to 5.00%. The SAP application of 60 kg ha-1improved most quality traits of naked oat including the contents of mineral elements in grains.

Key words: Super absorbent polymer, Drip irrigation, Traditional irrigation, Naked oat, Yield, Quality

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