4种抗风树种枝条含水量对抽条的影响研究  

Study on the Influence of Water Content of Four Kinds of Wind-Resistant Tree Species on Pumping

作　　者：汪海舰 年晓晨 王冲冲 王磊 张明 刘桂林[2] Wang Haijian(Tangshan Caofeidian Longdao Construction Investment Co.,Ltd.,Tangshan 063200,China)

机构地区：[1]唐山曹妃甸龙岛建设投资有限公司,河北唐山063200 [2]河北农业大学,河北保定071000

出　　处：《安徽农学通报》2019年第23期56-58,76,共4页Anhui Agricultural Science Bulletin

基　　金：曹妃甸龙岛沙滩绿化研究与示范项目(201817)

摘　　要：以构树、榆树、金钟花和锦带花4种抗风性良好的树种为试验材料,研究不同树种枝条在冬季休眠期含水量变化和临界含水量与其对失水的忍耐能力的关系。结果表明:在冬季休眠期的构树、榆树、金钟花和锦带花4种树木,其枝条含水量先下降后上升,2018-2019年在保定地区,构树、锦带花、榆树和金钟花休眠期枝条失水主要集中在1月30日至2月19日。4种枝条在冬季休眠期间,枝条含水量的变化趋势与相对电导率的变化趋势呈极显著负相关(r=-0.809)。发生抽条临界含水量,榆树在40%~35%,锦带花在35%~30%,金钟花在30%~25%,构树在25%~20%;说明4种树种中,以构树的抗抽条能力最强。With four wind-resistant tree species,Broussonetia papyrifera,Ulmus chinensis,Forsythia viridissimaandWeigela florida as experimental materials,the relationship between water content change during dormancy period and critical water content of branches during safe wintering and their anti-stripping ability was studied in order to select garden tree varieties with stronger anti-stripping ability for arid and windy areas. The results are as follows:the water content of four kinds of trees that survive safely in winter first decreases and then increases. From 2018 to 2019 in Baoding area,the water loss of branches during dormancy period of brocade,elm and golden bell mainly concentrates from January 30 to February 19. During the safe wintering period of the four branches,the trend of water content in the branches was negatively correlated with the trend of electrolyte leakage rate(r=-0.809). The critical water content of the four branches was determined. The results showed that the critical water content of Ulmus chinensis was 40%-35%,and the critical water content of Weigela florida was 35%-30%,the critical water content of Forsythia viridissima was 30%-25%,and the critical water content of Broussonetia papyrifera was 25%-20%. The critical water content of branches reflects their tolerance to water loss and is related to their resistance to pumping.

关 键 词：抗风树种 抽条 相对电导率 临界含水量 

分 类 号：S66[农业科学—果树学]