Acta Agriculturae Zhejiangensis ›› 2022, Vol. 34 ›› Issue (7): 1474-1484.DOI: 10.3969/j.issn.1004-1524.2022.07.15

• Environmental Science • Previous Articles     Next Articles

Investigation and analysis of continuous cropping obstacle and soil environment in large-scale vegetable bases in Zhejiang Province, China

YAO Yanlai1(), ZHU Weijing1, DING Jian2, HONG Leidong1, HONG Chunlai1, WANG Weiping1,*(), ZHU Fengxiang1, HE Weike3, HONG Haiqing3   

  1. 1. Institute of Environment, Resource, Soil and Fertilizer, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
    2. Zhejiang Agricultural Technology Extension Center, Hangzhou 310020, China
    3. Songyang Bureau of Agriculture and Rural Affairs,Songyang 331124,Zhejiang, China
  • Received:2021-04-14 Online:2022-07-25 Published:2022-07-26
  • Contact: WANG Weiping

Abstract:

Vegetable industry is one of the 10 leading agricultural industries in Zhejiang Province. However, in recent years, soil quality degradation and continuous cropping obstacles in large-scale vegetable bases have become important limiting factors for the green and sustainable development of vegetable industry in Zhejiang. In order to investigate the continuous cropping obstacles and the soil environment of large-scale vegetable bases in Zhejiang Province, 65 large-scale vegetable bases in 24 counties (cities, districts) were surveyed. A total of 101 soil samples were collected,and the physiochemical properties were analyzed, and the quantity of pathogens of two typical soil-borne diseases in some samples was also determined. The results showed that the planting years of large-scale vegetable bases in Zhejiang Province were relatively long. More than 46.2% of large-scale bases have been planted for more than 10 years. Continuous cropping was common.The average incidence of soil-borne diseases reached 17.82%,the average yield reduction reached 22.12%, and some bases even failed to harvest in some years. The soil degradation of some large-scale vegetable bases was serious. The proportion of soil samples with pH≤5.0 reached 33.7%, and the proportion of soil samples with electrical conductivity>1 000 μS·cm-1 reached 42.6%. Available nutrients were accumulated in soil. The average soil available P and available K contents reached 184.30 mg·kg-1 and 387.20 mg·kg-1, respectively. Correlation analysis showed that there was a significant (P<0.05) correlation between the quantity of Fusarium oxysporum and the content of soil available nitrogen and available phosphorus. Soil acidification, secondary salinization and accumulation of soil available nutrients and pathogens have become the important reasons for the soil quality degradation and the frequent occurrence of continuous cropping obstacles of large-scale vegetable bases. The investigation results could provide basis for the effective control of continuous cropping obstacles of large-scale vegetable bases in Zhejiang Province.

Key words: large-scale vegetable bases, continuous cropping obstacle, soil acidification, secondary salinization, soil-borne diseases

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