Abstract
A field experiment was carried out to investigate the effects of different combined applications of pig manure compost(PMC) and chemical fertilizers(CF) on rice yield,nutrients accumulation and nitrogen use efficiency.The results indicated that: when nitrogen fertilizer application rate was reduced by 15%(204 kg·hm-2),12.5%(210 kg·hm-2) and 10%(216 kg·hm-2),rice yield obtained with the combined application of PMC and CF(PMC 6 000 kg·hm-2+50% NPK,for PMCF2 and PMC 3 000 kg·hm-2+70% NPK,for PMCF1 and organic and inorganic compound fertilizer with PMC and CF 1 800 kg·hm-2,for PMC1),were the same as CF(9 162 kg·hm-2).Different combined applications of PMC and CF significantly influenced the shoot nutrient accumulation of rice in different growth periods,when nitrogen fertilizer application rate was reduced by 15%(204 kg·hm-2),12.5%(210 kg·hm-2) and 10%(216 kg·hm-2),which also could ensure the nutrient accumulation.There was the same trend on shoot N,P and K accumulation,and all had a significant positive correlation with rice yields.Except PMC2(organic and inorganic compound fertilizer with PMC and CF 3 600 kg·hm-2),the rice nitrogen use efficiency of combined application of PMC and CF was higher than that of CF treatment,and the highest nitrogen use efficiency was gained by PMCF2 and PMC1.In conclusion,in south Jiangsu Province rice paddies nitrogen fertilizers application rate was reduced by 10%-15%,and using the combined application of PMC and CF or making organic and inorganic compound fertilizer with PMC and CF could meet the production requirements.
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Claims 8
Claim · model-written summary
PMCF2 maintained rice yield at the CF level despite a 15% nitrogen reduction.
- Taxon
- rice
Oryza sativae0 - Treatment
- PMC 6 000 kg·hm-2+50% NPKe0
- Outcome
- rice yielde0
- Direction
- the same ase0
- Value
- 9 162 kg·hm-2e0
- Qualifier
- 15%(204 kg·hm-2)e0
- Comparator
- CFe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“when nitrogen fertilizer application rate was reduced by 15%(204 kg·hm-2),12.5%(210 kg·hm-2) and 10%(216 kg·hm-2),rice yield obtained with the combined application of PMC and CF(PMC 6 000 kg·hm-2+50% NPK,for PMCF2 and PMC 3 000 kg·hm-2+70% NPK,for PMCF1 and organic and inorganic compound fertilizer with PMC and CF 1 800 kg·hm-2,for PMC1),were the same as CF(9 162 kg·hm-2)”
Claim · model-written summary
PMCF1 maintained rice yield at the CF level despite a 12.5% nitrogen reduction.
- Taxon
- riceOryza sativae0
- Treatment
- PMC 3 000 kg·hm-2+70% NPKe0
- Outcome
- rice yielde0
- Direction
- the same ase0
- Value
- 9 162 kg·hm-2e0
- Qualifier
- 12.5%(210 kg·hm-2)e0
- Comparator
- CFe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“when nitrogen fertilizer application rate was reduced by 15%(204 kg·hm-2),12.5%(210 kg·hm-2) and 10%(216 kg·hm-2),rice yield obtained with the combined application of PMC and CF(PMC 6 000 kg·hm-2+50% NPK,for PMCF2 and PMC 3 000 kg·hm-2+70% NPK,for PMCF1 and organic and inorganic compound fertilizer with PMC and CF 1 800 kg·hm-2,for PMC1),were the same as CF(9 162 kg·hm-2)”
Claim · model-written summary
PMC1 maintained rice yield at the CF level despite a 10% nitrogen reduction.
- Taxon
- riceOryza sativae0
- Treatment
- organic and inorganic compound fertilizer with PMC and CF 1 800 kg·hm-2e0
- Outcome
- rice yielde0
- Direction
- the same ase0
- Value
- 9 162 kg·hm-2e0
- Qualifier
- 10%(216 kg·hm-2)e0
- Comparator
- CFe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“when nitrogen fertilizer application rate was reduced by 15%(204 kg·hm-2),12.5%(210 kg·hm-2) and 10%(216 kg·hm-2),rice yield obtained with the combined application of PMC and CF(PMC 6 000 kg·hm-2+50% NPK,for PMCF2 and PMC 3 000 kg·hm-2+70% NPK,for PMCF1 and organic and inorganic compound fertilizer with PMC and CF 1 800 kg·hm-2,for PMC1),were the same as CF(9 162 kg·hm-2)”
Claim · model-written summary
Combined compost and chemical fertilizers significantly affected shoot nutrient accumulation across rice growth periods while sustaining accumulation at reduced nitrogen rates.
- Taxon
- riceOryza sativae0
- Organ / stage
- shoote0
- Treatment
- combined applications of PMC and CFe0
- Outcome
- shoot nutrient accumulatione0
- Qualifier
- different growth periodse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Different combined applications of PMC and CF significantly influenced the shoot nutrient accumulation of rice in different growth periods,when nitrogen fertilizer application rate was reduced by 15%(204 kg·hm-2),12.5%(210 kg·hm-2) and 10%(216 kg·hm-2),which also could ensure the nutrient accumulation”
Claim · model-written summary
Shoot N, P and K accumulation each had a significant positive correlation with rice yield.
- Taxon
- riceOryza sativae0
- Organ / stage
- shoote0
- Compound
- N,P and Ke0
- Outcome
- rice yieldse0
- Direction
- positivee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There was the same trend on shoot N,P and K accumulation,and all had a significant positive correlation with rice yields”
Claim · model-written summary
Combined PMC and CF improved rice nitrogen use efficiency relative to CF, except for PMC2.
- Taxon
- riceOryza sativae0
- Treatment
- combined application of PMC and CFe0
- Outcome
- rice nitrogen use efficiencye0
- Direction
- highere0
- Qualifier
- Except PMC2e0
- Comparator
- CF treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Except PMC2(organic and inorganic compound fertilizer with PMC and CF 3 600 kg·hm-2),the rice nitrogen use efficiency of combined application of PMC and CF was higher than that of CF treatment”
Claim · model-written summary
PMCF2 and PMC1 gave the highest rice nitrogen use efficiency.
- Taxon
- riceOryza sativae1
- Treatment
- PMCF2 and PMC1e0
- Outcome
- nitrogen use efficiencye0
- Direction
- higheste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the highest nitrogen use efficiency was gained by PMCF2 and PMC1”
e1“shoot nutrient accumulation of rice”
Claim · model-written summary
The authors conclude that reducing nitrogen by 10%–15% with combined PMC and CF can meet rice production needs in south Jiangsu.
- Taxon
- riceOryza sativae0
- Treatment
- combined application of PMC and CFe0
- Outcome
- could meet the production requirementse0
- Value
- 10%-15%e0
- Setting
- south Jiangsu Provincee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in south Jiangsu Province rice paddies nitrogen fertilizers application rate was reduced by 10%-15%,and using the combined application of PMC and CF or making organic and inorganic compound fertilizer with PMC and CF could meet the production requirements”
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