摘要
为探究少花蒺藜草(Cenchrus spinifex)的入侵对紫花苜蓿(Medicago sativa Linn.)、野大豆(Glycine soja Siebold&Zucc.)和羊草(Leymus chinensis(Trin.ex Bunge)Tzvelev)种子萌发的化感作用,本试验采用培养皿法研究少花蒺藜草各部位(凋落物、种子、根、茎、叶)不同浓度水浸提液(1.25%,2.50%,5.00%,10.00%)对3种牧草种子萌发的影响。结果表明:少花蒺藜草的不同部位水浸提液化感作用不同,1.25%种子水浸提液与10.00%种子、凋落物水浸提液对紫花苜蓿种子萌发具有促进作用,其中1.25%种子水浸提液作用最强,综合化感效应指数为0.05,其他部位各浓度水浸提液对紫花苜蓿种子萌发均具有抑制作用;少花蒺藜草各部位水浸提液对野大豆种子萌发均具有抑制作用,其中10.00%叶水浸提液完全抑制了野大豆种子萌发;10.00%种子水浸提液对羊草种子抑制作用最强,综合化感效应指数为-0.76。
To investigate the allelopathy of Cenchrus spinifex on Medicago sativa Linn.,Glycine soja Siebold&Zucc.,Leymus chinensis(Trin.ex Bunge)Tzvelev seed germination,the culture dish method was used to study the effects of different water extracts concentrations(1.25%,2.5%,5.00%,10.00%)from different parts(litter,seed,root,stem,leaf)of C.spinifex on the seed germination of three forages.The results showed that water extracts from different parts of C.spinifex had different allelopathic effects,1.25%seed water extracts,1.25%and 10.00%litter water extracts had the promoting effects on the seed germination of M.sativa.Among them,the allelopathy of 1.25%seed water extract was the strongest,and its synthesis effect index was 0.05.The various concentrations of other parts water extracts all had inhibitory effects on seed germination of M.sativa;the all parts water extract of C.spinifex had inhibitory effects on seed germination of G.soja.Among them,10.00%leaf water extract completely inhibited the seed germination of G.soja;10.00%seed water extract had the strongest inhibitory effect on the seeds of L.chinensis,and synthesis effect index was-0.76.
作者
佳文
许明贺
周立业
高凯
孙忠林
熊梅
JIA Wen;XU Ming-he;ZHOU Li-ye;GAO Kai;SUN Zhong-lin;XIONG Mei(College of Pratacultural,Inner Mongolia Minzu University,Tongliao,Inner Mongolia 028000)
出处
《草地学报》
CAS
CSCD
北大核心
2024年第8期2548-2556,共9页
Acta Agrestia Sinica
基金
内蒙古自治区自然科学基金(2022MS03060)
科尔沁沙地生态农业国家民委重点实验室开放基金(MDK2023097)
内蒙古自治区直属高校基本科研业务费(GXKY23Z081)资助。
关键词
入侵植物
少花蒺藜草
牧草
化感效应
Invasive plants
Cenchrus spinifex
Pasture
Allelopathic effect
