ACTA AGRICULTURAE BOREALI-SINICA ›› 2019, Vol. 34 ›› Issue (S1): 235-241. doi: 10.7668/hbnxb.20190465

Special Issue: Cotton

• Resource and Environment·Plant Protection • Previous Articles     Next Articles

The Effects of Different Nitrogen Application Rates on Cotton Yield and Quality Saw in Summer

ZHANG Youchang1, RONG Yihua2, HUANG Xiaoli3, HU Aibing4, LI Hongju5, FENG Changhui1, YAN Xianhui2, LI Wei3, ZHANG Xianhong4, LUO Yanping5, YANG Guozheng6   

  1. 1. Cash Crop Institute, Hubei Academy of Agricultural Sciences, Wuhan 430070, China;
    2. Xiangyang Academy of Agricultural Sciences, Xiangyang 441057, China;
    3. Huanggang Academy of Agricultural Sciences, Huanggang 438000, China;
    4. Jingzhou Academy of Agricultural Sciences, Jingzhou 434000, China;
    5. Jingmen(China Agricultural Valley) Academy of Agricultural Sciences, Jingmen 448000, China;
    6. College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
  • Received:2019-06-21 Published:2019-12-28

Abstract: Experiment was carried out to study the effects of five different nitrogen rates(120, 150, 180, 210, 240 kg/ha) applied once fertilization when seeing first flower on cotton yield and quality saw in summer in five trials where are in the main cotton producing areas of Hubei Province in 2018.The results showed that the cotton lint yield increased firstly and then decreased with the increase of nitrogen application rate. And the highest lint yield treatment was N150 by 1 498 kg/ha without significant difference compared with the five nitrogen treatments. That means a relatively stable yield could be obtained within large range nitrogen fertilizer level; There was no significant difference in fiber quality among the five different nitrogen treatments, did also in cotton growth characteristics and field growth. Therefore, under the conditions of cotton planting in summer, it can be obtained stable yield and quality when nitrogen application rate is among 120-240 kg/ha. In order to improve the efficiency of cotton planting according to the strategy of ″reducing investment without reducing production″, and it is feasible to apply nitrogen rate without exceeding 150 kg/ha in Hubei Province.

Key words: Cotton saw in summer, Fertilization when seeing first flower, Nitrogen application rate, Yield, Quality

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Cite this article

ZHANG Youchang, RONG Yihua, HUANG Xiaoli, HU Aibing, LI Hongju, FENG Changhui, YAN Xianhui, LI Wei, ZHANG Xianhong, LUO Yanping, YANG Guozheng. The Effects of Different Nitrogen Application Rates on Cotton Yield and Quality Saw in Summer[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2019, 34(S1): 235-241. doi: 10.7668/hbnxb.20190465.

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