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Chinese Agricultural Science Bulletin ›› 2020, Vol. 36 ›› Issue (17): 99-107.doi: 10.11924/j.issn.1000-6850.casb19030012

Special Issue: 园艺

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Reducing Chemical Fertilizer Techniques Affect Facilities Pepper Yield and Nutrient Absorption and Utilization

Wang Qiujun1, Guo Dejie1, Ma Yan1(), Liang Yonghong2, Qiu Meihua2   

  1. 1 Institute of Agricultural Resources and Environments, Jiangsu Academy of Agricultural Sciences, Nanjing 210014
    2 Jiangsu Station for Protection of Arable Land Quality and Agricultural Environment, Nanjing 210036
  • Received:2019-03-04 Revised:2019-06-19 Online:2020-06-15 Published:2020-06-09
  • Contact: Ma Yan E-mail:myjaas@sina.com

Abstract:

Aiming at the excessive application of chemical fertilizers in the production of greenhouse pepper in north Jiangsu, we studied the effects of two fertilizer reduction techniques on pepper yield and nutrient absorption and utilization in Huaian for two consecutive seasons. The fertilizer reduction techniques included replacing the basal and chemical fertilizer with commercial organic fertilizer (OF) and reducing the application of chemical fertilizer in top dressing by applying special water-soluble fertilizer under drip irrigation (RD). The results showed that after reducing fertilizer for two consecutive seasons, the effect of OF and RD on yield increase was obvious, and the yield increased by 12.6% and 30.2%, respectively, as compared with the conventional fertilization treatment. In the first season of pepper planting, there was no significant change among different treatments in content of nitrogen, phosphorus and potassium in various organs of pepper plants. In the second season of pepper planting, OF and RD treatment significantly increased the content of nitrogen, phosphorus and potassium in pepper fruits, and the content of nitrogen, phosphorus and potassium in stem and leaves of OF treatment were higher than that of the other two treatments. In the two seasons of pepper cultivation, the total nutrient utilization rate of the two techniques of reducing chemical fertilizer was significantly higher than that of the conventional treatment, and the OF treatment was the highest. The results indicate that under the condition of this experiment, the pepper yield could be improved through the two techniques of reducing chemical fertilizer.

Key words: pepper in greenhouse, reducing chemical fertilizer, commercial organic fertilizer replacement, special water-soluble fertilizer for drip irrigation, nutrient absorption and utilization

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