Abstract
Terrace banks in the east Sichuan hilly area which were planted with Hemerocallis citrina for slope protection were studied together with soil in bank grids to understand root distribution characteristics and their effect on soil nutrients.Four different planting years of Hemerocallis,were used in field investigations and indoor experiments with a combination of research methods.The differences and relationships between root distribution characteristics,biomass and soil nutrients on terrace banks were analysed.With an increasing age after planting,root length,root volume,root surface area and root volume indexes increased;The root vertical distribution of 4-year-old Hemerocallis were significantly higher than in younger plants.Their values over years one to four were 185.3cm(17,133items),237.5cm2,301.2cm3 and 158.9cm respectively.The root system distribution levels were different due to the restrictions of the grid size.In the four different planting years of Hemerocallis,the average root biomass size sequences were:4a3a2a1a.There was different growth in different soil layers and also some differences of root biomass.The Hemerocallis root morphology not only affected the growth of the plant itself,but also affected soil fertilization.Root and soil nutrients were higher under three or four years of Hemerocallis than under 1or 2years of Hemerocallis,and those index in the bare plots,soil nutrient content were significantly difference between different plant ages in the same soil layer.Total N,available N and available P contents and the Hemerocallis root indicators were significantly correlated.It appears that the Hemerocallis roots have the ability to change the soil nutrients through their soil and water conservation properties.The research results could be used for choosing herbs and improving soil nutrients in the east Sichuan hilly area terrace banks and to provide a theoretical basis and practical reference value.
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Claims 13
Claim · model-written summary
With an increasing age after planting,root length,root volume,root surface area and root volume indexes increased
- Taxon
- Hemerocallis
_v2.jpg?width=60)
Hemerocallist0 - Outcome
- root length,root volume,root surface areae0
- Direction
- increasede0
- Qualifier
- increasing age after plantinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_v2.jpg?width=500)
Verbatim
e0“With an increasing age after planting,root length,root volume,root surface area and root volume indexes increased”
t0“Hemerocallis”
Claim · model-written summary
root volume indexes increased
- Taxon
- HemerocallisHemerocallist0
- Outcome
- root volume indexese0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“root volume indexes increased”
t0“Hemerocallis”
Claim · model-written summary
The root vertical distribution of 4-year-old Hemerocallis were significantly higher than in younger plants
- Taxon
- HemerocallisHemerocallise0
- Material
- 4-year-old Hemerocallise0
- Outcome
- root vertical distributione0
- Direction
- highere0
- Comparator
- younger plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The root vertical distribution of 4-year-old Hemerocallis were significantly higher than in younger plants”
Claim · model-written summary
Their values over years one to four were 185.3cm(17,133items),237.5cm2,301.2cm3 and 158.9cm respectively
- Taxon
- HemerocallisHemerocallist0
- Outcome
- root lengthe1
- Value
- 185.3cme0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Their values over years one to four were 185.3cm(17,133items),237.5cm2,301.2cm3 and 158.9cm respectively”
t0“Hemerocallis”
e1“With an increasing age after planting,root length,root volume,root surface area and root volume indexes increased”
Claim · model-written summary
Their values over years one to four were 185.3cm(17,133items),237.5cm2,301.2cm3 and 158.9cm respectively
- Taxon
- HemerocallisHemerocallist0
- Outcome
- root surface areae1
- Value
- 237.5cm2e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Their values over years one to four were 185.3cm(17,133items),237.5cm2,301.2cm3 and 158.9cm respectively”
t0“Hemerocallis”
e1“With an increasing age after planting,root length,root volume,root surface area and root volume indexes increased”
Claim · model-written summary
Their values over years one to four were 185.3cm(17,133items),237.5cm2,301.2cm3 and 158.9cm respectively
- Taxon
- HemerocallisHemerocallist0
- Outcome
- root volumee1
- Value
- 301.2cm3e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Their values over years one to four were 185.3cm(17,133items),237.5cm2,301.2cm3 and 158.9cm respectively”
t0“Hemerocallis”
e1“With an increasing age after planting,root length,root volume,root surface area and root volume indexes increased”
Claim · model-written summary
Their values over years one to four were 185.3cm(17,133items),237.5cm2,301.2cm3 and 158.9cm respectively
- Taxon
- HemerocallisHemerocallist0
- Outcome
- root vertical distributione1
- Value
- 158.9cme0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Their values over years one to four were 185.3cm(17,133items),237.5cm2,301.2cm3 and 158.9cm respectively”
t0“Hemerocallis”
e1“The root vertical distribution of 4-year-old Hemerocallis were significantly higher than in younger plants”
Claim · model-written summary
The root system distribution levels were different due to the restrictions of the grid size
- Taxon
- HemerocallisHemerocallist0
- Outcome
- root system distribution levelse0
- Direction
- differente0
- Qualifier
- restrictions of the grid sizee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The root system distribution levels were different due to the restrictions of the grid size”
t0“Hemerocallis”
Claim · model-written summary
the average root biomass size sequences were:4a3a2a1a
- Taxon
- HemerocallisHemerocallist0
- Outcome
- average root biomass size sequencese0
- Value
- 4a3a2a1ae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the average root biomass size sequences were:4a3a2a1a”
t0“Hemerocallis”
Claim · model-written summary
Root and soil nutrients were higher under three or four years of Hemerocallis than under 1or 2years of Hemerocallis
- Taxon
- HemerocallisHemerocallise0
- Outcome
- Roote0
- Direction
- highere0
- Comparator
- 1or 2years of Hemerocallise0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Root and soil nutrients were higher under three or four years of Hemerocallis than under 1or 2years of Hemerocallis”
Claim · model-written summary
Root and soil nutrients were higher under three or four years of Hemerocallis than under 1or 2years of Hemerocallis
- Taxon
- HemerocallisHemerocallise0
- Outcome
- soil nutrientse0
- Direction
- highere0
- Comparator
- 1or 2years of Hemerocallise0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Root and soil nutrients were higher under three or four years of Hemerocallis than under 1or 2years of Hemerocallis”
Claim · model-written summary
Total N,available N and available P contents and the Hemerocallis root indicators were significantly correlated
- Taxon
- HemerocallisHemerocallise0
- Organ / stage
- roote0
- Outcome
- Total N,available N and available P contentse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Total N,available N and available P contents and the Hemerocallis root indicators were significantly correlated”
Claim · model-written summary
the Hemerocallis roots have the ability to change the soil nutrients through their soil and water conservation properties
- Taxon
- HemerocallisHemerocallise0
- Outcome
- soil nutrientse0
- Qualifier
- soil and water conservation propertiese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the Hemerocallis roots have the ability to change the soil nutrients through their soil and water conservation properties”