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Acta Agron Sin ›› 2017, Vol. 43 ›› Issue (06): 875-884.doi: 10.3724/SP.J.1006.2017.00875

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

Effects of Different Cultivation Modes on Canola Yield and Lodging Related Indices

KUAI Jie1,ZUO Qing-Song2,CHEN Ai-Wu3,CHENG Yu-Gui4,MEI Shao-Hua5,WU Jiang-Sheng1,ZHOU Guang-Sheng1,*   

  1. 1 College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China; 2 Key Laboratory of Crop Genetics and Physiology of Jiangsu Province, Yangzhou University, Yangzhou 225009, China; 3 Hubei Department of Rape Production Management, Wuhan 430070, China; 4 Yichang Academy of agricultural Sciences, Yichang 443004, China; 5 Wuxue Bureau of Agriculture, Huanggang 435400, China
  • Received:2016-12-22 Revised:2017-03-01 Online:2017-06-12 Published:2017-03-24
  • Contact: 周广生, E-mail: zhougs@mail.hzau.edu.cn E-mail:kuaijie@mail.hzau.edu.cn
  • Supported by:

    This study was supported by the Special Fund for Agro-Scientific Research in the Public Interest (201203096), the National Key Technology R&D Program of China (2014BAD11B03), the China Agriculture Research System (NYCYTC-00510), and the Fundamental Research Funds for Central Universities (2013PY001).

Abstract:

To establish a reasonable cultivation and management mode matching canola production, three cultivation modes including farmers practice cultivation (FP), super high cultivation (SH) and high yield and high efficiency cultivation (HH) were adopted with middle-mature winter canola Huashuang 5 in single cropping rice region (Zhijiang) and early-mature winter canola Huazao 291 in double-rice cropping region (Wuxue) of Hubei province at high and low soil fertility levels. Biomass accumulation, radiation use efficiency (RUE), yield and lodging related indices were investigated and analyzed. The light inception rate (LIR) and RUE under SH and HH were higher than those under FP during whole growth period. The deceleration rate of LIR at the end of growth stage was least under HH as the rate of bolting nitrogen increased, which was benefit for biomass accumulation. The harvest index and yield of SH and HH were significantly higher than those of FP. Although HH had higher yield than SH, the difference was not significant. The lodging index of HH was lower than that of SH which indicated that HH had higher lodging resistance. All these revealed that HH could achieve high yield and high lodging resistance with lower nitrogen cost compared with SH. It is concluded that the HH cultivation model can promote the mechanical harvesting efficiency by increasing lodging resistance and reducing nitrogen cost due to higher plant density. Therefore, HH should be encouraged to extend in the Yangtze River Valley in the future for increasing mechanical canola productivity.

Key words: Canola, Cultivation modes, Yield, Lodging, Radiation use efficiency

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