Abstract
The modified production ecological model SUCROS was used to simulate the growth process of summer corn with the protection of windbreaks in Huanghuaihai Plain, and the simulated result was compared with the field monitoring data. The effects of various physiological and ecological factors that affect the growth of the summer corn were analyzed. The modified SUCROS could simulate the growth process successfully. The leaf area index and organ biomass simulated by the model could be fairly consistent with the monitoring data when the effects of insect and disease pests and weeds were considered simultaneously. As compared with the simulated data in the monoculture field, the corn yield in the windbreak system was about 6.8% higher due to the improved microclimate. Based on the simulation of the relationships between sowing density, sowing date and seed production, the density standard for high yield in the region was 6.75-7.50 plants.m-2, even high as 9.00 plants.m-2 in the fields with sufficient soil nutrients and water supply. It is suggested that the optimal sowing period is from May 21 to June 5. Through simulating the influence of "cool summer" on the growth of summer corn in southern Huanghuaihai Plain, it was found that the growth period of corn would extend 3 to 4 days if the average air temperature during the growing period lowered by one degree. The "less radiation" and correspondent "lower temperature" were the direct reasons of yield reduction in "cool summer".
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Claims 8
Claim · model-written summary
In the simulation, corn yield in the windbreak system was about 6.8% higher than in the monoculture field, attributed to improved microclimate.
- Taxon
- corn
Zea mays subsp. mayse1 - Treatment
- windbreak systeme1
- Outcome
- corn yielde1
- Direction
- highere1
- Value
- 6.8%e1
- Qualifier
- due to the improved microclimatee1
- Comparator
- monoculture fielde1
- Setting
- Huanghuaihai Plaine2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“As compared with the simulated data in the monoculture field, the corn yield in the windbreak system was about 6.8% higher due to the improved microclimate”
e2“with the protection of windbreaks in Huanghuaihai Plain”
Claim · model-written summary
The modified SUCROS model simulated the growth process of summer corn successfully, compared with field monitoring data.
- Taxon
- summer cornZea mays subsp. mayse3
- Outcome
- growth processe1
- Comparator
- field monitoring datae2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The modified SUCROS could simulate the growth process successfully”
e2“the simulated result was compared with the field monitoring data”
e3“simulate the growth process of summer corn”
Claim · model-written summary
Simulated leaf area index and organ biomass of corn were fairly consistent with monitoring data when insect and disease pests and weeds were considered.
- Taxon
- summer cornZea mays subsp. mayse3
- Interactor
- insect and disease pestse4pest
- Second interactor
- weedse4weed
- Outcome
- leaf area index and organ biomasse4
- Comparator
- monitoring datae4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“simulate the growth process of summer corn”
e4“The leaf area index and organ biomass simulated by the model could be fairly consistent with the monitoring data when the effects of insect and disease pests and weeds were considered simultaneously”
Claim · model-written summary
Simulation indicated a sowing density standard for high yield of 6.75-7.50 plants m-2 in the region.
- Taxon
- summer cornZea mays subsp. mayse3
- Outcome
- density standard for high yielde5
- Value
- 6.75-7.50 plants.m-2e5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“simulate the growth process of summer corn”
e5“the density standard for high yield in the region was 6.75-7.50 plants.m-2”
Claim · model-written summary
Simulation indicated a density standard for high yield of up to 9.00 plants m-2 in fields with sufficient soil nutrients and water supply.
- Taxon
- summer cornZea mays subsp. mayse3
- Outcome
- density standard for high yielde5
- Value
- 9.00 plants.m-2e6
- Qualifier
- in the fields with sufficient soil nutrients and water supplye6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“simulate the growth process of summer corn”
e5“the density standard for high yield in the region was 6.75-7.50 plants.m-2”
e6“even high as 9.00 plants.m-2 in the fields with sufficient soil nutrients and water supply”
Claim · model-written summary
The optimal sowing period for summer corn was suggested to be from May 21 to June 5.
- Taxon
- summer cornZea mays subsp. mayse3
- Outcome
- optimal sowing periode7
- Value
- from May 21 to June 5e7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“simulate the growth process of summer corn”
e7“It is suggested that the optimal sowing period is from May 21 to June 5”
Claim · model-written summary
Simulation indicated that the growth period of corn would extend 3 to 4 days if the average air temperature during the growing period were lowered by one degree.
- Taxon
- cornZea mays subsp. mayse7
- Treatment
- the average air temperature during the growing period lowered by one degreee7
- Outcome
- growth periode7
- Direction
- extende7
- Value
- 3 to 4 dayse7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“the growth period of corn would extend 3 to 4 days if the average air temperature during the growing period lowered by one degree”
Claim · model-written summary
Less radiation and lower temperature were the direct causes of yield reduction in cool summers, according to the simulation.
- Taxon
- summer cornZea mays subsp. mayse3
- Treatment
- cool summere6
- Outcome
- yield reductione6
- Qualifier
- less radiatione6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“simulate the growth process of summer corn”
e6“The "less radiation" and correspondent "lower temperature" were the direct reasons of yield reduction in "cool summer"”
The same questions in other papers
wind · yield · Zea mays (maize)Positive and negative results
2 papers in the same direction as this paper · 2 in the opposite direction
- negative
- negative
- positive
1 paper more in this group
See all 5 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.