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Chinese Agricultural Science Bulletin ›› 2019, Vol. 35 ›› Issue (33): 111-115.doi: 10.11924/j.issn.1000-6850.casb18060096

Special Issue: 园艺

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Soil Phosphorus in Facility Vegetable Field: Accumulation Characteristics and Risk Control Methods

  

  • Received:2018-06-22 Revised:2019-02-22 Accepted:2019-02-25 Online:2019-11-25 Published:2019-11-25

Abstract: The paper aims to study the accumulation characteristics of phosphorus and its risk control methods in facility vegetable fields. By summarizing the researches on the soil phosphorus accumulation and loss in facility vegetable fields nearly 20 years at home and abroad, it was found that: due to the excessive input of phosphorus in facility vegetable fields in China, the phosphorus accumulation in the surface soil was excessive, and the available phosphorus content was much greater than the phosphorus loss environment inflection point value (50-80 mg/kg). From the phosphorus loss pathway, we discussed the effects of source control technique (controlling the amount of P fertilizer input, improving application method of P fertilizer), process control technique (optimizing planting systems, using phosphorus chelating agents), end control technique (hedgerow interception), economic and legislation strategies on controlling phosphorus loss; and studied some problems in the field, pointed out we should strengthen the use and management of organic fertilizer and the risk assessment of phosphorus in environmental key areas in the future.

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