Acta Agriculturae Zhejiangensis ›› 2022, Vol. 34 ›› Issue (8): 1626-1637.DOI: 10.3969/j.issn.1004-1524.2022.08.07

• Horticultural Science • Previous Articles     Next Articles

Effect of reducing chemical fertilizer and applying bio-organic fertilizer on yield and quality of Chinese cabbage in open field

RU Chao1(), YU Jihua1,2, WU Yue1, FENG Zhi1, GOU Zhaohui1, JIN Ning1, WANG Shuya1, LIU Zeci1, LYU Jian1,2,*()   

  1. 1. College of Horticulture, Gansu Agricultural University, Lanzhou 730070, China
    2. Key Laboratory of Arid Land Crop Science of Gansu Province, Lanzhou 730070, China
  • Received:2021-01-25 Online:2022-08-25 Published:2022-08-26
  • Contact: LYU Jian

Abstract:

In order to improve Chinese cabbage's problems of reduced yield, poor quality and low fertilizer utilization caused by excessive use of chemical fertilizers, Wangchun Chinese cabbage cultured in the open field was used as the test material, and no fertilization (CK1) and conventional fertilization (CK2), chemical fertilizer balance fertilization (T1), chemical fertilizer reduction of 30%+6 000 kg·hm-2 biological organic fertilizer (T2), chemical fertilizer reduction of 30%+9 000 kg·hm-2 biological organic fertilizer (T3), chemical fertilizer reduction of 40%+6 000 kg·hm-2 bio-organic fertilizer (T4) and chemical fertilizer reduction of 40%+9 000 kg·hm-2(T5) were set up to investigate the effects of different fertilization treatments on the growth, yield and quality of Chinese cabbage. The results showed that the application of bio-organic fertilizer increased the root vigor and chlorophyll content of each treatment to varying degrees. Compared with the local conventional fertilization, the root vigor and chlorophyll content increased by 15.5%-40.3%, and the chlorophyll content increased by 11.5%-37.5%, and increased with the application of bio-organic fertilizer. Compared with CK2, T1-T5 treatment increased the yield by 0.04%-20.91%. T3 treatment increased the yield by 20.91%, and its economic benefit increased by 9.04%. The application of bio-organic fertilizer increased the fertilizer contribution rate, and the fertilizer was reduced by 30% and combined with bio-organic application. The content of soluble sugar, soluble protein, and free amino acid in T3 treatment were 0.91 percent points, 81.00% and 9.46% higher than that of CK2, respectively. Nitrate content in each treatment with bio-organic fertilizer was reduced by 11.53%-21.52%, VC, total flavonoids, glucosinolate content in T3 treatment was significantly higher than CK2, the total phenol content of each treatment was not significantly different. Compared with CK2, the content of mineral elements in each treatment increased to different degrees, and the increase was more obvious after applying bio-organic fertilizer. The membership function analysis was carried out on 15 indicators, and the comprehensive evaluation of T3 treatment with 30% reduction in chemical fertilizer and 9 000 kg·hm-2 bio-organic fertilizer had the best effect, followed by T2>T5>T1>T4>CK2>CK1.

Key words: Chinese cabbage, fertilizer reduction, bio-organic fertilizer, nutritional quality, economic benefit

CLC Number: