遮阴对3种香草植物生长及叶片矿质养分含量的影响  

Effects of shading on the plant growth and leaf mineral nutrient contents of three aromatic plants

作　　者：吴静 徐凯莉 薛飞 袁平成[1] WU Jing;XU Kaili;XUE Fei;YUAN Pingcheng(School of Landscape Architecture and Art,Jiangxi Agricultural University,Nanchang,Jiangxi 330045,China)

机构地区：[1]江西农业大学园林与艺术学院,江西南昌330045

出　　处：《贵州师范大学学报（自然科学版）》2022年第1期58-64,共7页Journal of Guizhou Normal University：Natural Sciences

基　　金：江西省交通厅项目(9131203648)。

摘　　要：通过测定柠檬香茅(Cymbopogon citratus)、香蜂草(Melissa officinalis)、匍匐迷迭香(Rosmarinus officinalis‘Severn Sea’)3种香草植物在4个不同遮阴处理,即CK(全光照)、T1(50%遮阴)、T2(70%遮阴)和T3(85%遮阴)下形态生长变化,探讨光照对其株高、叶长、叶宽,生物量分配及叶片矿质养分含量的影响。结果表明:柠檬香茅、香蜂草和匍匐迷迭香3种植物的株高,叶长均随遮阴强度的增加而增加,叶宽则随遮阴强度的增加而减少;3种香草植物T1、T2的总生物量均高于CK,而T3的总生物减少,弱光抑制了3种植物的正常生长;其叶片中全氮、全磷、全钾含量均高于CK,遮阴对植株叶片中矿质养分有促进作用。因此,柠檬香茅和香蜂草在栽植时需要一定的遮阴,这既能促进其生长又有利于矿质养分的积累,而匍匐迷迭香以全光照为最佳。By measuring the morphological growth of Cymbopogon citratus, Melissa officinalis and Rosmarinus officinalis ’Severn Sea’ under four different shading treatments, including CK(full light treatments), T1(50% shading treatments), T2(70% shading treatments) and T3(85% shading treatments),we study the effects of light on plant height, leaf length, leaf width, biomass allocation and leaf mineral nutrient content. The results showed that the plant height, leaf length and leaf width of three plants increased with the increase of shading intensity, but decreased with the increase of shading intensity. The total biomass of T1 and T2 was higher than that of CK, while the total biomass of T3 decreased, and the normal growth of the three plants was inhibited by weak light. The contents of total nitrogen, total phosphorus and total potassium in leaves of three plants were higher than those in CK, and shading promoted the mineral nutrients in leaves. Thus, C. citratus and M. officinalis need shade when planted, which can not only promote their growth but also conducive to the accumulation of mineral nutrients, and ‘Severn Sea’ is best in full light.

关 键 词：香草植物 遮阴 矿质养分 生长 

分 类 号：S573.9[农业科学—作物学]