稀土微肥对南方红豆杉生理特性的影响  

Effects of rare earth microfertilizer on physiological characteristics of Taxus chinensis

作　　者：彭俊贤 PENG JunXian(Natural Resources Bureau of Luojiang District,Quanzhou 362000,Fujian,China)

机构地区：[1]福建省泉州市洛江区自然资源局,福建泉州362000

出　　处：《福建林业》2023年第5期39-42,共4页Fujian Forestry

基　　金：福建省星火计划项目(2020S0033);泉州市科技计划项目(2020N030)。

摘　　要：以3年生南方红豆杉无性繁殖苗为研究对象,设置喷施和灌溉两个处理,探究不同浓度梯度稀土微肥对南方红豆杉生理特性的影响。试验结果表明,在一定浓度范围内,南方红豆杉叶片中的叶绿素、类胡萝卜素含量、可溶性蛋白(SP)含量、过氧化物酶(POD)与过氧化氢酶(CAT)活性都随着稀土微肥的浓度增加呈现先增加后降低的趋势;其中喷施0.15 mmol·L^(-1)稀土微肥时光合色素含量最高;灌溉0.05 mg·株^(-1)稀土微肥时光合色素含量最高;喷施浓度大于1.05 mmol·L^(-1)、灌溉量大于0.40 mg·株^(-1)时,MDA含量开始上升并与对照相比显著提高;0.15 mmol·L^(-1)喷施处理、0.29 mg·株^(-1)灌溉处理下SP含量、POD与CAT活性显著提高,表明适当浓度的稀土微肥处理可以有效促进南方红豆杉的生长。The effects of rare earth microfertilizer with different c oncentration gradients on the physiological characteristics of Taxus chinensis were studied by spraying and irrigation of 3-year old clones of Tchinensis.The results showed that within a certain concentration range,the contents of chlorophyll,carotenoid,SP,POD and CAT in leaves of T.chinensisinitially increased and then decreased with the rise of rare earth microfertilizer concentration.Spraying 0.15 mmol·L^(-1)rare earth microfertilizer produced the highest synchromine contentwhile the highestcontent of synchromes was observed when 0.05 mg·plant^(-1)of rare earth microfertilizer was used foeirrigation.When the spray ing concentration ex-ceeded 1.05 mmol·L^(-1)and the irrigation amount exceeded 0.40 mg·plant^(-1),the MDA content began to increase and signifcantly exceeded that of the control.Notably,SP.POD and CAT activities exhibited asignificant increasewith 0.15 mmol.L+spraying treatment and 0.29 mg·plant^(-1)irri-gation treatment.The results demonstrated that a proper concentration of rare earth micro-fertilizer treatment could effectively promote the growth of T.chinensis.

关 键 词：南方红豆杉 稀土微肥 生理指标 代谢调控 

分 类 号：S949[农业科学—水产养殖]