›› 2018, Vol. 30 ›› Issue (2): 275-279.DOI: 10.3969/j.issn.1004-1524.2018.02.14

• Environmental Science • Previous Articles     Next Articles

Effects of controlled release nitrogen fertilizer on yield and nitrogen use efficiency of cotton in fluvo-aquic soil of Bohai Sea Ring Area

LIU Quanfeng1, LIU Yongzhen2, CAO Jinfeng1, YANG Zhenli3, ZHAI Yuzhu1, LAI Deqiang1, SUN Yi1, LIU Zhenzhen1, *   

  1. 1. Cangzhou Academy of Agriculture and Forestry Sciences, Cangzhou Technical College, Cangzhou 061001, China;
    2. Agriculture and Animal Husbandry Bureau of Cangzhou, Cangzhou 061001, China;
    3. Institute of Agricultural Resources and Environment, Hebei Academy of Agricultural and Forestry Sciences,Shijiazhuang 050051, China
  • Received:2017-07-03 Online:2018-02-20 Published:2018-02-11

Abstract: In the present study, with the conventional fertilization method using urea as CK, a field experiment was conducted to study the influence of controlled release nitrogen fertilizer on chlorophyll content in the main stem leaf of cotton, cotton yield and its component factors, cotton fiber quality and nitrogen use efficiency. It was shown that, with the same application amount of nitrogen, the yield of seed cotton and lint cotton was significantly (P<0.05) increased under the controlled release nitrogen fertilizer than that of urea (CK), and the nitrogen fertilizer utilization rate, the fertilizer contribution rate, the agronomic efficiency were all significantly (P<0.05) higher under the controlled release nitrogen fertilizer than that of urea (CK). The results indicated that the controlled release fertilizer could increase fertilizer use efficiency. When the application amount of controlled release nitrogen fertilizer was 80% of N amount in the conventional fertilization method, there was no significant difference in yield between treatments. This application rate could be used as reference in fluvo-aquic soil of Bohai Sea Ring Area.

Key words: fluvo-aquic soil, controlled release nitrogen fertilizer, cotton, yield, nitrogen use efficiency

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