Claim · model-written summary
With humic acid, soil nitrate nitrogen was 1,317 kg·hm −2 lower with plants than without plants, the largest decline among the polymers.
- Treatment
- H treatmente1
- Outcome
- SNO 3 ‐ ‐N in soil with plantse0
- Direction
- decreasede0
- Value
- 1,317 kg·hm −2e0
- Comparator
- soil without plantse0
Not reportedTaxon
Verbatim
e0“the SNO 3 ‐ ‐N in soil with plants was decreased by 1,317 kg·hm −2 compared with that in soil without plants, and the decrease was the largest among the decreases caused by the three polymer materials”
e1“for the H treatment were increased”
Title
Xiaoming Tian; Kaiyong Wang; Hua Fan; et al. Soil Use and Management 2020. doi:10.1111/sum.12651
Other claims from this paper (15)
- Intervention effect Polymer materials increased nitrogen accumulation and dry weight in wheat leaves, spike axis plus husk, and grain.
- Intervention effect Polymer materials decreased wheat stem nitrogen accumulation and dry weight.
- Observation Humic acid treatment had the highest wheat nitrogen uptake after flowering, 34.5 kg·hm −2.
- Intervention effect Modified polymer treatment had the highest wheat nitrogen transport, 21.1% above no polymer treatment.
- Intervention effect Humic acid treatment significantly increased wheat yield by 19.7%.
- Intervention effect Modified polymer treatment significantly increased wheat yield by 12.6%.
- Intervention effect Polymer materials inhibited soil total and microbial biomass nitrogen early in cultivation.
- Intervention effect Polymer materials significantly improved soil total and microbial biomass nitrogen at flowering and maturity.
- Intervention effect Humic acid increased soil total nitrogen, nitrate nitrogen and ammonium nitrogen storage.
- Intervention effect Modified polymer increased soil nitrate nitrogen.
- Intervention effect The plant-associated decline in soil nitrate nitrogen was smaller with modified polymer than with humic acid.
- Intervention effect Composite polymer increased soil nitrate nitrogen.
- Intervention effect Composite polymer decreased soil ammonium nitrogen.
- Association Redundancy analysis linked humic acid and modified polymers to increased soil microbial biomass nitrogen and ammonium nitrogen.
- Association Redundancy analysis linked humic acid and modified polymers to increased nitrogen accumulation in wheat organs other than stems.