ACTA AGRICULTURAE BOREALI-SINICA ›› 2011, Vol. 26 ›› Issue (2): 175-179. doi: 10.7668/hbnxb.2011.02.037

Special Issue: Wheat

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Effects of Modified Starch Coated and Slow Released Urea on Growth and Nitrogen Agronomic Efficiency Winter Wheat

ZHAI Cai-xia1, WU Huan-huan1, WANG Li-ying1, CHEN Li-li1, LI Ruo-nan1, DOU Fei1, ZHANG Yan-cai1, LI Zai-han2   

  1. 1. Institute of Agricultural Resources and Environment, Hebei Academy ofAgriculture and Forestry Sciences, Shijiazhuang 050051, China;
    2. Shijiazhuang 28 Middle School, Shijiazhuang 050000, China
  • Received:2011-01-22 Published:2011-04-28

Abstract: The field plot experiment was conducted and it were discussed about the effects of modified starch coa. ted and slow release urea on winter wheat growth,photosynthetic rate and water efficiency in flag leaf,yield and nitrogen agronomic efficiency.The results indicated that the wheat dry matter increased when coated and slow release urea as base fertilzer compared with urea.The root vigor activity increased 4.90%to 16.66%,photosynthetic rate and water efficiency in flag leaf increased 4.41%to 9.41%and 8.63%to 25.17%respectively.After harvest,the soil nitrate content with coated and slow release urea applied Was higher than urea used in the surface depth,but lower in the deep soil.the the wheat yield increased 9.4%in the coated and slow released urea treatment.So the characteristics of nitrogen releasing were main factor,which affected the soil nitrogen content.With fertilizer amount increased, groundwater contaminated would increase.

Key words: Winter wheat, Modified starch, Coated and slow released urea, Growth Yield, Soil nitrate

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Cite this article

ZHAI Cai-xia, WU Huan-huan, WANG Li-ying, CHEN Li-li, LI Ruo-nan, DOU Fei, ZHANG Yan-cai, LI Zai-han. Effects of Modified Starch Coated and Slow Released Urea on Growth and Nitrogen Agronomic Efficiency Winter Wheat[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2011, 26(2): 175-179. doi: 10.7668/hbnxb.2011.02.037.

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