Abstract
Albic luvisol widely distributed in Sanjiang Plain of Heilongjiang province,and the soil fertility degraded seriously after decades of reclamation.In the present study,based on the vertical distribution of typical highland Albic luvisol,which was black soil(A,0-18 cm),albic horizon(Aw,18-36 cm)and illuvial horizon(B,36 cm),indoor stimulation experiments of(ⅰ)increase the depth of black soil from 20 to 60 cm with 20 cm as interval and,(ⅱ)mix the layer of Aw and B and applied phosphate and calcium fertilizer were carried out,to elucidate the contribution of subsoil to soybean yield and the soil amendment effect in Albic luvisol.With the increase of balck soil layers,the plant height and yield of soybean increased,and the calculated contribution rate of subsoil to soybean yield was only 4.7%.Soybean yield of subsoil fertilizer treatments were 9.7%-18.1% higher than subsoil mixing,and 16.0%-34.1% higher than control.Subsoil fertilizing phosphate increased content of Ca2-P,Ca8-P and Al-P.Results suggest that the subsoil fertility of Albic luvisol is lower and subsoil applying phosphate and calcium can improve soil fertility,hence increase soybean yield.
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Claims 7
Claim · model-written summary
Greater black soil depth increased soybean plant height.
- Taxon
- soybean
Glycine maxe0 - Treatment
- increase of balck soil layerse0
- Outcome
- plant heighte0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“With the increase of balck soil layers,the plant height and yield of soybean increased”
Claim · model-written summary
Greater black soil depth increased soybean yield.
- Taxon
- soybeanGlycine maxe0
- Treatment
- increase of balck soil layerse0
- Outcome
- yield of soybeane0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“With the increase of balck soil layers,the plant height and yield of soybean increased”
Claim · model-written summary
The calculated contribution of subsoil to soybean yield was 4.7%.
- Taxon
- soybeanGlycine maxe0
- Outcome
- contribution rate of subsoil to soybean yielde0
- Value
- 4.7%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the calculated contribution rate of subsoil to soybean yield was only 4.7%”
Claim · model-written summary
Subsoil fertilizer yielded 9.7%-18.1% more soybean than subsoil mixing.
- Taxon
- SoybeanGlycine maxe0
- Treatment
- subsoil fertilizer treatmentse0
- Outcome
- Soybean yielde0
- Direction
- highere0
- Value
- 9.7%-18.1%e0
- Comparator
- subsoil mixinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soybean yield of subsoil fertilizer treatments were 9.7%-18.1% higher than subsoil mixing”
Claim · model-written summary
Subsoil fertilizer yielded 16.0%-34.1% more soybean than control.
- Taxon
- SoybeanGlycine maxe0
- Treatment
- subsoil fertilizer treatmentse0
- Outcome
- Soybean yielde0
- Direction
- highere0
- Value
- 16.0%-34.1%e0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soybean yield of subsoil fertilizer treatments were 9.7%-18.1% higher than subsoil mixing,and 16.0%-34.1% higher than control”
Claim · model-written summary
Subsoil phosphate fertilization increased Ca2-P, Ca8-P and Al-P content.
- Taxon
- soybeanGlycine maxt0
- Treatment
- Subsoil fertilizing phosphatee0
- Outcome
- content of Ca2-P,Ca8-P and Al-Pe0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Subsoil fertilizing phosphate increased content of Ca2-P,Ca8-P and Al-P”
t0“Soybean”
Claim · model-written summary
The authors conclude that phosphate and calcium application improves subsoil fertility and soybean yield.
- Taxon
- soybeanGlycine maxe0
- Treatment
- subsoil applying phosphate and calciume0
- Outcome
- increase soybean yielde0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“subsoil applying phosphate and calcium can improve soil fertility,hence increase soybean yield”
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