Abstract
A field experiment was conducted to evaluate the effects of different fertilization methods on chlorophyll fluo- rescence parameters,superoxide dismutase(SOD)activity,permeability of cell membrane and yield of summer maize. The treatment offertilizing in seed furrow+topdressing nitrogen at jointing stage+topdressing nitrogen at big bugle stagewas better at increasing Fv/Fm,φPSⅡand qP and reducing NPQ in leaves.Both treatments ofapplication of controlled-release fertilizerandfertilizing in seed furrow+topdressing nitrogen at jointing stage+topdressing nitro- gen at big bugle stageincreased chlorophyll content and superoxide dismutase(SOD)activity in leaves,and kept mal- ondialdehyde(MDA)content and relative electrical conductivity at lower levels.Although controlled-release fertilizer in- creased 1000-grain weight,the treatment offertilizing in seed furrow+topdressing nitrogen at jointing stage+top- dressing nitrogen at big bugle stagehad the best effect on grain yield per unit area.The data suggested that the method offertilizing in seed furrow+topdressing nitrogen at jointing stage+topdressing nitrogen at big bugle stageshould be adopted in order to get higher grain yield.But controlled-release fertilizer seemed to be a better choice to simplify the field management.
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Claims 5
Claim · model-written summary
Seed-furrow plus two topdressing N applications increased Fv/Fm, φPSⅡ and qP in leaves.
- Treatment
- fertilizing in seed furrow+topdressing nitrogen at jointing stage+topdressing nitrogen at big bugle stagee1
- Outcome
- Fv/Fm,φPSⅡand qPe1
- Direction
- increasinge1
Zea maysNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“yield of summer maize”
e1“The treatment offertilizing in seed furrow+topdressing nitrogen at jointing stage+topdressing nitrogen at big bugle stagewas better at increasing Fv/Fm,φPSⅡand qP and reducing NPQ in leaves”
Claim · model-written summary
Seed-furrow plus two topdressing N applications reduced NPQ in leaves.
- Treatment
- fertilizing in seed furrow+topdressing nitrogen at jointing stage+topdressing nitrogen at big bugle stagee1
- Outcome
- NPQe1
- Direction
- reducinge1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“yield of summer maize”
e1“The treatment offertilizing in seed furrow+topdressing nitrogen at jointing stage+topdressing nitrogen at big bugle stagewas better at increasing Fv/Fm,φPSⅡand qP and reducing NPQ in leaves”
Claim · model-written summary
Controlled-release fertilizer increased 1000-grain weight.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“yield of summer maize”
e4“Although controlled-release fertilizer in- creased 1000-grain weight”
Claim · model-written summary
Seed-furrow plus two topdressing N applications should be adopted for higher grain yield.
- Treatment
- fertilizing in seed furrow+topdressing nitrogen at jointing stage+topdressing nitrogen at big bugle stagee6
- Outcome
- grain yielde6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“yield of summer maize”
e6“The data suggested that the method offertilizing in seed furrow+topdressing nitrogen at jointing stage+topdressing nitrogen at big bugle stageshould be adopted in order to get higher grain yield”
Claim · model-written summary
Controlled-release fertilizer is a better choice to simplify field management of summer maize.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“yield of summer maize”
e7“controlled-release fertilizer seemed to be a better choice to simplify the field management”
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