| 曾瑶,淳长品.眉山晚熟柑橘冻害调查研究[J].中国南方果树,2021,50(5): |
| 眉山晚熟柑橘冻害调查研究 |
| Investigation on Freeze Injury of Tree and Fruit of Late- maturing Citrus in Meishan Region of Sichuan Province in 2020 |
| 投稿时间：2021-07-28 修订日期：2021-09-18 |
| DOI：10.13938/j.issn.1007-1431.20210469 |
| 中文关键词: 冻害 晚熟柑橘 防寒措施 |
| 英文关键词:Frost damage late-maturing citrus measures to prevent frost damage |
| 基金项目: |
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| 摘要点击次数: 1940 |
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| 中文摘要: |
| 2020年我国柑橘产区罕见遇到多年未有的低温天气，导致其树体和果实均遭受了不同程度的冻害。为了弄清不同区县、不同地形和不同品种柑橘树体和果实的冻害情况，我们于2021年2月对眉山5个区县不同果园和不同品种树体和果实进行了冻害调查，并与对应5个区县气象数据进行对比分析研究。结果表明，5个区县的冻害程度与低温密切相关，同期以仁寿县温度最低（-3.7℃）其柑橘树体和果实冻害最重，而丹棱县（-1.2℃）且日温差较差小冻害最轻。不同地形的树体和果实冻害程度由高到低依次为低洼>平地>山地。对于不同的地区和立地条件以及不同柑橘品种在低温来临前，采取不同的防寒措施促使树体和果实安全越冬。 |
| 英文摘要: |
| In 2020, the citrus-producing areas rarely encountered low-temperature weather which has not been occurred in many years, resulting in different degrees of freezing damage to the tree and fruit of late-maturing citrus. In order to clarify the freezing injury of citrus trees and fruits, we investigated the freezing damage of different orchards and different varieties of trees and fruits in five districts and counties of Meishan in February 2021, and made a comparative analysis and research with the meteorological data of the corresponding five districts and counties. The results showed that the degree of freezing damage in the 5 districts and counties was closely related to low temperature, and Renshou county had the lowest temperature (-3.7°C) and its citrus tree and fruit freeze damage was the heaviest, while in Danling county had the highest temperature (-1.2°C), and the daily range was small, so its freezing damage is the least. The degree of freezing damage of trees and fruits in different terrains from high to low was low-lying>flat>mountain. For different regions and site conditions as well as different citrus varieties, cold protection measures should be taken to promote the safe overwintering of trees and fruits before the low temperature. |
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