Acta Agriculturae Zhejiangensis ›› 2021, Vol. 33 ›› Issue (7): 1199-1211.DOI: 10.3969/j.issn.1004-1524.2021.07.06

• Horticultural Science • Previous Articles     Next Articles

Effects of combined application of organic fertilizer and chemical fertilizer on nutritional quality and volatile compounds of cauliflower

LI Ju1(), XIE Bojie1, WEI Shouhui1, ZHANG Guobin1, WU Yue1, TANG Zhongqi1, XIAO Xuemei1,2,*(), YU Jihua1,2   

  1. 1. College of Horticulture, Gansu Agricultural University, Lanzhou 730070, China
    2. Key Laboratory of Crops in Drought Habitat of Gansu Province, Lanzhou 730070, China
  • Received:2020-12-09 Online:2021-07-25 Published:2021-08-06
  • Contact: XIAO Xuemei

Abstract:

In the present study, the cauliflower cultivar Lihe Qinggeng 100 days was used as the experiment material, and six fertilization treatments were set as follows: CK1, no fertilization; CK2, conventional fertilization; T1, balanced fertilization; T2, balanced fertilization+3 000 kg·hm-2 bio-organic fertilizer; T3, balanced fertilization+6 000 kg·hm-2 bio-organic fertilizer; T4, balanced fertilization+12 000 kg·hm-2 bio-organic fertilizer. The effects of different treatments on nutritional quality and volatile compounds quantity and content of cauliflower were studied. The results showed that compared with CK2, application of bio-organic fertilizer combined with chemical fertilizer could increase nutrients contents and volatile compounds in cauliflower. Compared with CK2, vitamin C content under T3 treatment was significantly (P<0.05) increased by 17.6%. Ca content under T2 and T3 treatments was significantly (P<0.05) increased by 14.3% and 36.8%, respectively. Compared with CK2, T2, T3 and T4 treatments increased the number of volatile compound types in cauliflower by 8, 12 and 13, respectively, and the contents of ketones under these treatments were increased by 3.4, 2.9 and 7.1 times, respectively. In addition, T2 and T3 treatments increased the types and contents of characteristic volatile compounds with green, fruity and floral flavor. The comprehensive evaluation results based on the principal component analysis of nutritional quality indexes and volatile compounds showed that the scores decreased as T3>T2>T4>CK2>T1>CK1. Therefore, balanced fertilization+6 000 kg·hm-2 bio-organic fertilizer was the most appropriate fertilizer mode under the experiment conditions.

Key words: cauliflower, chemical fertilizer reduction, bio-organic fertilizer, quality, volatile compounds

CLC Number: