主办单位:中国气象局沈阳大气环境研究所
国际刊号:ISSN 1673-503X
国内刊号:CN 21-1531/P

Journal of Meteorology and Environment ›› 2023, Vol. 39 ›› Issue (2): 92-99.doi: 10.3969/j.issn.1673-503X.2023.02.012

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The study on the chilling injury warning index of typical greenhouse thermophilic vegetables in the central Shandong province

Chen CHEN1,2(),Yan-chun CHEN1,2,*(),Zhi-qiang DONG1,2,Zhi-wei ZHANG3   

  1. 1. Shandong Provincial Key Laboratory of Meteorological Disaster Prevention and Mitigation, Ji′nan 250031, China
    2. Shandong Climate Center, Ji′nan 250031, China
    3. Anqiu Agricultural and Rural Bureau, Anqiu 262100, China
  • Received:2022-04-26 Online:2023-04-28 Published:2023-05-20
  • Contact: Yan-chun CHEN E-mail:beibei1988820@163.com;ycch126@126.com

Abstract:

Based on the data on the inside and outside minimum temperature of a typical greenhouse in the central Shandong province from November of 2008 to March of 2021, combined with the chilling injury index of thermophilic vegetables, the correlation analysis, 80% guarantee rate safety method, and case analysis method were used to analyze the chilling injury warning index of the thermophilic vegetables under different weather conditions in different seasons.The results showed that there is no chilling injury in spring.In autumn, the chilling injury is mainly occurred in November and caused by less sunshine.A risk of light chilling injury can be released when the minimum temperature outside the greenhouse is below 0 ℃ under the condition of overcast days is more than 5 days, while the minimum temperature threshold value of the moderate chilling injury index is-5 ℃.The chilling injury in winter is divided into two types of low temperature or long-term overcast days, and its warning index is the minimum temperature outside the greenhouse.The chilling injury warnings under different weather conditions are divided into the following grades i.e.the light and moderate chilling injury under a clear day, cloudy weather, and overcast days with the duration ≤4 d and ≥5 d, and their minimum temperature threshold values are -7 ℃, -13 ℃, -6 ℃, -10 ℃, -4 ℃, -9 ℃, 0 ℃ and -7 ℃, respectively.

Key words: Minimum temperature type, Overcast day type, Chilling injury, Warning index

CLC Number: