Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2019, Vol. 35 ›› Issue (13): 42-47.doi: 10.11924/j.issn.1000-6850.casb18010084

Special Issue: 生物技术 油料作物 棉花

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Liquid Organic Fertilizer and Nitrogen Fertilizer Management: Effects on Physiological Characteristics and Yield of Cotton

  

  • Received:2018-01-16 Revised:2018-04-12 Accepted:2018-04-24 Online:2019-05-05 Published:2019-05-05

Abstract: To optimize the fertilization technology of drip irrigation cotton in northern Xinjiang, a field experiment of nitrogen fertilizer combined application with liquid organic fertilizer was carried out in 2016. The single factor randomized block test was conducted in this experiment. 4 treatments were set up, including three nitrogen fertilizer levels and the control. The leaf area index, chlorophyll contents, photosynthetic parameters, soluble protein contents, yield and yield compositions were determined. The results showed that, when reducing 20% nitrogen fertilizer and combining liquid organic fertilizer, leaf area index, chlorophyll contents, net photosynthetic rate, physiological characteristics, and yield all were the best. The yield increased by 48.25%, compared with the single nitrogen fertilizer; it increased by 16.61% compared with the unreduced nitrogen fertilizer or reducing 40% nitrogen fertilizer and combining liquid organic fertilizer. Applying liquid organic fertilizer effectively improves the growth condition of plants and the leaf area index of group, increases chlorophyll content and enhances the photosynthetic characteristics, thus promotes cotton production.