| 余小平,胡犁月,余昊哲,汤晓青,戴明辉.井冈蜜柚低温冻害预警气象等级指标探讨[J].中国南方果树,2023,52(2): |
| 井冈蜜柚低温冻害预警气象等级指标探讨 |
| Research On The Meteorological Grade Indicators of Low Temperature Freezing Injury Warning For Jinggang Candied Pomelo |
| 投稿时间：2022-08-25 修订日期：2022-10-25 |
| DOI：10.13938/j.issn.1007-1431.20220508 |
| 中文关键词: 井冈蜜柚 冻害 气象等级指标 预警信息 |
| 英文关键词:Jinggang candied pomelo freezing injury meteorological grade indicators early warning information |
| 基金项目:江西省气象局面上科研项目“吉安市发展井冈蜜柚特色果业气候可行性研究”；吉安市指导性科技计划项目“农业高影响天气对井冈蜜柚生产的影响及防御技术研究”。 |
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| 中文摘要: |
| 井冈蜜柚与其它柑橘类果树相似，冬季的低温可能对其造成不同程度的冻害。给种植户提前发布低温冻害预警信息，就能及时采取相应的防范措施，避免或减轻冻害影响。以江西吉安地区井冈蜜柚为研究对象，选取2016、2018、2021年发生较明显冻害的三个年份为典型个例，利用冻害调查资料与对应的最低气温值进行相关性分析，结果表明：极端最低气温－3℃是井冈蜜柚幼树发生冻害的临界值；－5℃是成年树发生冻害的临界值；随着温度降低或低温持续时间延长，冻害程度进一步加剧。 按不同低温级别（-5℃＜Td≤-4℃、-6℃＜Td≤-5℃、-7℃＜Td≤-6℃、Td≤-7℃）和持续时间（-4＜Tdh≤-3持续≥5h、-5＜Tdh≤-4持续≥5h、-6＜Tdh≤-5持续≥3h、-7＜Tdh≤-6持续≥3h），构建了两组井冈蜜柚冻害气象等级指标。 |
| 英文摘要: |
| Jinggang candied pomelo is similar to other citrus fruit trees, and the low temperature in winter may cause different degrees of freezing injury to it. By releasing early warning information of low temperature freezing injury to growers, they can take corresponding preventive measures in time to avoid or reduce the impact of freezing injury. Taking Jinggang candied pomelo in Ji''an, Jiangxi as the research object, three years with more obvious freezing injury in 2016, 2018 and 2021 were selected as typical cases, and the correlation analysis was carried out using the freezing injury survey data and the corresponding minimum temperature values. The results showed that the extreme minimum temperature of -3℃ was the critical value for freezing injury of Jinggang candied pomelo saplings; -5℃ was the critical value of freezing injury for adult trees; with the decrease of temperature or the prolongation of low temperature duration, the degree of freezing injury was further aggravated. According to different low temperature levels (-5℃＜Td≤-4℃, -6℃＜Td≤-5℃, -7℃＜Td≤-6℃, Td≤-7℃) and duration (-4＜Tdh≤ -3 for ≥5h, -5 |
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