Abstract
Effect on soil environment is one of important ecological strategies by which invasive plants outperform native species,and selection of appropriate plants might replace the invasive plants or resist their further invasion.In present study,changes in soil fertility and soil enzyme activity were investigated in the cultivation of four replacement plants(Sorghum bicolor × Sorghum sudanense,Helianthus annuus,Medicago sativa and Lolium perenne) mixed with Flaveria bidentis in different growth period.The results showed that compared with F.bidentis monoculture,(1)NH4 +-N,NO3-N levels of rhizosphere soil in were increased significantly when mixed with M.sativa,and available phosphorus content was significantly higher when mixed S.bicolor × S.sudanense;(2)the urease,phosphatase and invertase activities in M.sativa replacement treatment were significantly higher.It can be inferred that both S.bicolor × S.sudanense and M.sativa might have superior capacity in utilization soil of nitrogen compounds than F.bidentis,and they can competitively inhibit its activation of phosphorus in soil as well in our experiment condition,helping explain their effective replacement control on this invasive species.
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Claims 4
Claim · model-written summary
Mixing Medicago sativa with Flaveria bidentis significantly increased rhizosphere ammonium and nitrate relative to monoculture.
- Taxon
- Flaveria bidentis
_close-up_(13741736383).jpg?width=60)
Flaveria bidentist0 - Treatment
- mixed with M.sativae0
- Interactor
- M.sativa
Medicago sativae0other - Outcome
- NH4 +-N,NO3-N levels of rhizosphere soile0
- Direction
- increasede0
- Comparator
- F.bidentis monoculturee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_close-up_(13741736383).jpg?width=500)
Verbatim
e0“compared with F.bidentis monoculture,(1)NH4 +-N,NO3-N levels of rhizosphere soil in were increased significantly when mixed with M.sativa”
t0“Flaveria bidentis”
Claim · model-written summary
Mixing Sorghum bicolor × Sorghum sudanense significantly increased available phosphorus relative to Flaveria monoculture.
- Taxon
- Flaveria bidentisFlaveria bidentist0
- Treatment
- mixed S.bicolor × S.sudanensee0
- Interactor
- S.bicolor × S.sudanense
Sorghum bicolore0other - Outcome
- available phosphorus contente0
- Direction
- highere0
- Comparator
- F.bidentis monoculturee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“compared with F.bidentis monoculture,(1)NH4 +-N,NO3-N levels of rhizosphere soil in were increased significantly when mixed with M.sativa,and available phosphorus content was significantly higher when mixed S.bicolor × S.sudanense”
t0“Flaveria bidentis”
Claim · model-written summary
Medicago sativa replacement significantly increased rhizosphere urease, phosphatase and invertase activities.
- Taxon
- Flaveria bidentisFlaveria bidentist0
- Treatment
- M.sativa replacement treatmente0
- Interactor
- M.sativaMedicago sativae0other
- Outcome
- urease,phosphatase and invertase activitiese0
- Direction
- highere0
- Comparator
- F.bidentis monoculturee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the urease,phosphatase and invertase activities in M.sativa replacement treatment were significantly higher”
e1“compared with F.bidentis monoculture”
t0“Flaveria bidentis”
Claim · model-written summary
The authors inferred superior nitrogen compound use and inhibition of soil phosphorus activation by the two replacement species, explaining their control of Flaveria.
- Taxon
- Flaveria bidentisFlaveria bidentist0
- Interactor
- S.bicolor × S.sudanenseSorghum bicolore0other
- Second interactor
- M.sativaMedicago sativae0other
- Outcome
- effective replacement controle0
- Qualifier
- superior capacity in utilization soil of nitrogen compoundse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“both S.bicolor × S.sudanense and M.sativa might have superior capacity in utilization soil of nitrogen compounds than F.bidentis,and they can competitively inhibit its activation of phosphorus in soil as well in our experiment condition,helping explain their effective replacement control on this invasive species”
t0“Flaveria bidentis”