Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2022, Vol. 38 ›› Issue (21): 51-57.doi: 10.11924/j.issn.1000-6850.casb2021-0867

Special Issue: 生物技术 植物保护 马铃薯

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Double Reduction of Chemical Fertilizer and Pesticide in Potato Production

WANG Zhen1(), LIN Tuanrong1, WANG Wei1, WANG Yufeng1, LUO Xiaobo2, YAO Bin3   

  1. 1Inner Mongolia Ulanqab Agricultural and Forestry Science Institute, Ulanqab, Inner Mongolia 012000
    2Institute of Biotechnology, Guizhou Academy of Agricultural Sciences, Guiyang 550006
    3Inner Mongolia Helingeer County Agricultural and Pastoral Bureau, Helingeer, Inner Mongolia 011500
  • Received:2021-09-06 Revised:2021-12-05 Online:2022-07-25 Published:2022-08-23

Abstract:

The purpose of this study is to explore the optimal green technology of double reduction of chemical fertilizer and pesticide in potato production, to improve potato yield and quality and guide the actual production. In this study, ‘Qingshu No. 9’ was used as experimental material. Four fertilizer treatments were designed, and two pesticides, A and B, were compared for each fertilizer treatment. The results showed that in treatment 2, compared with those of the control, potato quality was improved and the yield was increased by 6460.2 kg/hm2 by reducing chemical fertilizer application and increasing organic fertilizer application (750 kg/hm2). In treatment 3, potato quality was improved with the reduction of chemical fertilizer application and the increase of organic fertilizer application (600 kg/hm2) and microbial fertilizer (300 kg/hm2). In treatment 4, the reduction of chemical fertilizer application and the increase of organic fertilizer application (600 kg/hm2) and humic acid fertilizer (45 kg/hm2) could improve the potato quality and increase the yield by 32.24% compared with that of control. Pesticide treatment had no adverse effect on the yield and quality of potato tuber. This study showed that treatment 4 could increase potato tuber quantity and yield and improve quality by reducing the amount of chemical fertilizer and adding humic acid fertilizer, and the technology could be popularized in production.

Key words: potato, organic fertilizer, microbial fertilizer, humic acid fertilizer, fertilizer reduction, pesticide reduction

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