Abstract
Alfalfa (Medicago sativa L.) is an important perennial legume forage that is cultivated in saline soil worldwide. This study aimed to clarify the effects of organic base fertilizer and inorganic topdressing on the productivity of alfalfa growing in saline soil. A three-year field study was conducted in which alfalfa was grown in the saline soil of the Huanghe River Delta with a control (no fertilizer) and three treatments: organic base fertilizer (Base), topdressing with urea fertilizer (Top), and combined base and topdressing fertilizers (BT). The productivity in the BT and Base treatments was 13.21 and 13.82 t·hm−2 in 3 years, significantly higher than that in the Top treatment and the control. The increased productivity in the BT and Base treatments were because organic matter promoted root growth of alfalfa seedlings in saline soil. The diversity of the soil bacterial community was not affected by the BT treatment, but the Base treatment increased the abundance of Acidobacteria, and the Top treatment increased the abundance of Gemmatimonadetes. Soil bacteria play an important role in improving the productivity of alfalfa growing in saline soil, and the mechanism by which soil microbes increase yield needs to be further studied.
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Claims 6
Claim · model-written summary
Combined base and topdressing fertilizer produced 13.21 t·hm−2 over three years, significantly above topdressing and control.
- Taxon
- Alfalfa
Medicago sativat0 - Treatment
- BTe0
- Outcome
- productivitye0
- Direction
- highere0
- Value
- 13.21e0
- Comparator
- Top treatment and the controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The productivity in the BT and Base treatments was 13.21 and 13.82 t·hm−2 in 3 years, significantly higher than that in the Top treatment and the control”
t0“Alfalfa Productivity”
Claim · model-written summary
Base fertilizer produced 13.82 t·hm−2 over three years, significantly above topdressing and control.
- Taxon
- AlfalfaMedicago sativat0
- Treatment
- Basee0
- Outcome
- productivitye0
- Direction
- highere0
- Value
- 13.82 t·hm−2e0
- Comparator
- Top treatment and the controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The productivity in the BT and Base treatments was 13.21 and 13.82 t·hm−2 in 3 years, significantly higher than that in the Top treatment and the control”
t0“Alfalfa Productivity”
Claim · model-written summary
Organic matter promoted root growth of alfalfa seedlings in saline soil.
- Taxon
- alfalfaMedicago sativae0
- Treatment
- organic mattere0
- Outcome
- root growthe0
- Direction
- promotede0
- Setting
- saline soile0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“organic matter promoted root growth of alfalfa seedlings in saline soil”
Claim · model-written summary
BT fertilizer did not affect soil bacterial diversity.
- Taxon
- AlfalfaMedicago sativat0
- Treatment
- BT treatmente0
- Outcome
- diversity of the soil bacterial communitye0
- Direction
- not affectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The diversity of the soil bacterial community was not affected by the BT treatment”
t0“Alfalfa Productivity”
Claim · model-written summary
Base fertilizer increased Acidobacteria abundance.
- Taxon
- AlfalfaMedicago sativat0
- Treatment
- Base treatmente0
- Interactor
- AcidobacteriaAcidobacteriotae0other
- Outcome
- abundance of Acidobacteriae0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the Base treatment increased the abundance of Acidobacteria”
t0“Alfalfa Productivity”
Claim · model-written summary
Topdressing increased Gemmatimonadetes abundance.
- Taxon
- AlfalfaMedicago sativat0
- Treatment
- Top treatmente0
- Interactor
- GemmatimonadetesGemmatimonadotae0other
- Outcome
- abundance of Gemmatimonadetese0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the Top treatment increased the abundance of Gemmatimonadetes”
t0“Alfalfa Productivity”
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