河北农业科学2025，Vol.29Issue(1)：31-35,5.DOI:10.12148/hbnykx.20250062
黄骅冬枣冻害预防及冻后管理技术研究
Research on the Prevention of Freeze Damage and Post-freeze Management Techniques for Huanghua Winter Jujube
摘要
Abstract
In order to provide technical guidance for reducing freeze damage losses in winter jujube production,Huanghua winter jujube trees were used as the experimental materials,and the conventional management with-out taking any freeze damage prevention measures from overwintering to germination was used as a control(CK1),and the antifreeze effects of three freeze damage prevention measures of strengthening the tree body,protecting the branches and covering the tree disk with grass were studied.Selecting winter jujube trees that have not been treated with antifreeze measures as the experimental materials,and using conventional manage-ment without any post-freeze management measures as a control(CK2),the effects of three post-freeze man-agement measures of reasonable pruning,wound protection and scientific irrigation on tree germination and fruit yield were studied.The results showed that the freezing degree of trees implemented with measures such as strengthening the tree body,protecting the branches,and covering the tree disk with grass was significantly reduced compared to CK1(severe).Among them,the freezing damage level of all three measures was moderate when used alone,and the winter jujube yield was more than half of the normal yield level in previous years(22 500 kg/hm2).When the three measures were used comprehensively,the antifreeze effect was the best,and the freezing damage level was mild.The winter jujube yield reached 21 228.8 kg/hm2,which was close to the normal yield level in pre-vious years,with an increase of 621.7％compared to CK1.After the occurrence of freeze damage,the germina-tion rate of trees implementing reasonable pruning,wound protection,and scientific irrigation measures was sig-nificantly higher than CK2(13.7％).Among them,when the three measures were used alone,the germination rates of trees were 30.2％,32.0％,and 40.0％,respectively.The winter jujube yield increased by 115.1％,132.1％,and 188.7％compared to CK2(2 941.5 kg/hm2),respectively.When the three measures were used com-prehensively,the effect was the best,with a tree germination rate of 59.9％and a yield of 12 737.3 kg/hm2,which was nearly 60％of the normal yield level in previous years,and an increase of 333.0％compared to CK2.In practical production,a combination of measures such as strengthening the tree body,protecting the branches,and covering the tree disk with grass are taken to prevent freeze damage.After being frozen,timely and appropriate pruning,wound protection,and scientific watering are combined to promote tree germination,which can minimize freeze damage losses to the greatest extent possible.关键词
冬枣/冻害/预防/冻后管理/黄骅Key words
Winter jujubes/Freeze damage/Prevention/Post-freeze management/Huanghua分类
农业科技引用本文复制引用
张帅,张旺林..黄骅冬枣冻害预防及冻后管理技术研究[J].河北农业科学,2025,29(1):31-35,5.基金项目
河北省中央财政林草科技推广示范项目"冬枣优质栽培新技术推广"(冀TG[2024]010) （冀TG[2024]010）
