Abstract
Industrialization and urbanization have produced large amounts of atmospheric and soil pollutants. Among them, heavy metals are one of the main byproducts that are widely distributed in the atmosphere, water, soil and organisms, which have a great impact on climate. It is of great significance to reduce their enrichment in soil by ecological restoration methods for the sustainable development of urban atmosphere and climate. This study investigated the effects of different garden plants (Festuca arundinacea, Ageratum conyzoides, Trifolium repens) mixed with Brassica parachinensis on plant growth, physiological indexes and Cr (chromium) content in aboveground and underground parts in Cr (the main heavy metal pollution produced by industrialization) contaminated soil. The yield of B. parachinensis was the highest under the mixed cropping mode with T. repens, with the Cr content in edible parts being lower than the standard, suggesting an effective combination of B. parachinensis in community gardens. The mixed cropping of F. arundinacea with Bra decreased B. parachinensis yield. Under the mixed cropping of A. conyzoides, the edible parts of B. parachinensis were aggravated by Cr pollution, which was not recommended for planting. Our results suggest that converting the monoculture mode of vegetables to mixed cropping with garden plants reduced heavy metal pollution of community garden plants and improved soil productivity and environmental quality.
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Claims 5
Claim · model-written summary
Brassica yield was highest with Trifolium repens mixed cropping.
- Taxon
- B. parachinensis
Brassica rapa var. parachinensise0 - Treatment
- mixed cropping mode with T. repense0
- Outcome
- yielde0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The yield of B. parachinensis was the highest under the mixed cropping mode with T. repens”
Claim · model-written summary
Chromium in edible Brassica parts was below the standard with Trifolium repens mixed cropping.
- Taxon
- B. parachinensisBrassica rapa var. parachinensise2
- Treatment
- mixed cropping mode with T. repense1
- Outcome
- Cr content in edible partse0
- Direction
- lowere0
- Comparator
- the standarde0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“with the Cr content in edible parts being lower than the standard”
e1“mixed cropping mode with T. repens”
e2“The yield of B. parachinensis was the highest”
Claim · model-written summary
Festuca arundinacea mixed cropping decreased Brassica yield.
- Taxon
- B. parachinensisBrassica rapa var. parachinensise0
- Treatment
- mixed cropping of F. arundinacea with Brae0
- Outcome
- B. parachinensis yielde0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The mixed cropping of F. arundinacea with Bra decreased B. parachinensis yield.”
Claim · model-written summary
Ageratum conyzoides mixed cropping aggravated chromium pollution in edible Brassica parts.
- Taxon
- B. parachinensisBrassica rapa var. parachinensise0
- Treatment
- mixed cropping of A. conyzoidese0
- Outcome
- edible parts of B. parachinensis were aggravated by Cr pollutione0
- Direction
- aggravatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under the mixed cropping of A. conyzoides, the edible parts of B. parachinensis were aggravated by Cr pollution”
Claim · model-written summary
The authors did not recommend Ageratum conyzoides mixed cropping.
- Taxon
- B. parachinensisBrassica rapa var. parachinensise0
- Treatment
- mixed cropping of A. conyzoidese0
- Outcome
- not recommended for plantinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under the mixed cropping of A. conyzoides, the edible parts of B. parachinensis were aggravated by Cr pollution, which was not recommended for planting.”
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