Effects of Intercropping with CaryophyllaceaeAccumulator Plants on Cadmium Accumulation ofCyphomandra betacea Seedlings  

混种石竹科富集植物对树番茄幼苗镉积累的影响

作　　者：SUN Guo-chao LI Hong-yan LIAO Ming-an LIN Li-jin TANG Yi WANG Zhi-hui 孙国超;李红艳;廖明安;林立金;唐懿;汪志辉(四川农业大学园艺学院,四川成都611130)

机构地区：[1]College of Horticulture,Sichuan Agricultural University,Chengdu 611130,PRC

出　　处：《Agricultural Science & Technology》2019年第5期13-20,共8页农业科学与技术（英文版）

基　　金：四川省教育厅项目(17ZB0342)。

摘　　要：The pot experiments were conducted to study the effects of intercropping with Pseudostellaria maximowicziana,Malachiumaquaticum and Stellaria media on Cd accumulation of Cyphomandra betacea seedlings.Compared with the monoculture,intercropping with Caryophyllaceae endarachneyllaceae accumulator plants decreased the biomass of C.betacea seedlings,and also reduced the photosynthetic pigment contents in C.betacea seedlings,which involve chlorophyll a,chlorophyll b,total chlorophyll and carotenoid.Intercropping with P.maximowicziana and M.aquaticum increased the Cd contents in shoots of C.betacea seedlings,which increased by 65.02%and 25.61%,respectively,compared with the monoculture.Intercropping with S.media reduced the Cd contents in shoots of C.betacea seedlings,which were reduced by 4.68%compared with the monoculture.When intercropping with C.betacea seedlings,the Cd accumulation amounts of 3 Caryophyllaceae accumulator plants were ranked as S.media>P.maximowicziana>M.aquaticum.Intercropping with S.media could effectively reduce Cd accumulation of C.betacea seedlings under Cd-contaminated soil condition.通过盆栽试验,将树番茄(Cypho-mandra betacea)幼苗与石竹科富集植物假繁缕(Pseudostellaria maximowicziana)、牛繁缕(Malachium aquaticum)和繁缕(Stellaria media)混种,研究了混种石竹科富集植物对树番茄幼苗镉积累的影响。结果表明:与单种相比,混种石竹科富集植物均不同程度减少了树番茄幼苗的生物量,降低了树番茄幼苗光合色素(叶绿素a、叶绿素b、叶绿素总量及类胡萝卜素)含量。混种假繁缕和牛繁缕提高了树番茄幼苗地上部分镉含量,较单种分别提高了65.02%和25.61%;混种繁缕降低了树番茄幼苗地上部分镉含量,较单种降低了4.68%。混种树番茄后,3种石竹科富集植物的镉积累量大小顺序为繁缕>假繁缕>牛繁缕。混种繁缕可有效降低镉污染土壤上树番茄幼苗的镉积累。

关 键 词：INTERCROPPING Caryophyllaceae accumulator plant Cyphomandra betacea Cadmium accumulation 

分 类 号：S567.19[农业科学—中草药栽培] X503.231[农业科学—作物学]