Abstract
The effects of different fertilization treatments on growth development,photosynthesis and yield of summer maize were studied in a long-term field experiment in the National Agro-Ecological Experiment Station in Fengqiu,China,and the correlations between net photosynthetic rate,leaf area index and yield were analyzed.The results showed that plant height,leaf area index and yield of the nitrogen,phosphorus,potassium nutrient-deficiency treatments were decreased significantly compared with NPK treatments.The yields of P deficiency,N deficiency and K deficiency treatments only accounted for 10.78%,21.14% and 83.43% of that NPK treatment,respectively.The correlations between leaf area index and yield was more significant than that between photosynthetic rate and yield,indicating that the yield in different fertilizer treatments depended primarily on the level of leaf area index,followed by the photosynthetic rate.The low yields under long-term non-fertilization or nitrogen,phosphorus,potassium nutrient-deficiency condition were mainly resulted from synthesis effects of the decreased leaf area index and net photosynthetic rate.
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Claims 6
Claim · model-written summary
Nutrient-deficiency treatments significantly decreased maize plant height and leaf area index relative to NPK.
- Treatment
- nitrogen,phosphorus,potassium nutrient-deficiency treatmentse0
- Outcome
- plant height,leaf area indexe0
- Direction
- decreasede0
- Comparator
- NPK treatmentse0
Zea maysOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“plant height,leaf area index and yield of the nitrogen,phosphorus,potassium nutrient-deficiency treatments were decreased significantly compared with NPK treatments”
t0“summer maize”
Claim · model-written summary
Phosphorus-deficient maize yield was 10.78% of NPK yield.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The yields of P deficiency,N deficiency and K deficiency treatments only accounted for 10.78%,21.14% and 83.43% of that NPK treatment,respectively.”
e1“decreased significantly compared with NPK treatments”
t0“summer maize”
Claim · model-written summary
Nitrogen-deficient maize yield was 21.14% of NPK yield.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The yields of P deficiency,N deficiency and K deficiency treatments only accounted for 10.78%,21.14% and 83.43% of that NPK treatment,respectively.”
e1“decreased significantly compared with NPK treatments”
t0“summer maize”
Claim · model-written summary
Potassium-deficient maize yield was 83.43% of NPK yield.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The yields of P deficiency,N deficiency and K deficiency treatments only accounted for 10.78%,21.14% and 83.43% of that NPK treatment,respectively.”
e1“decreased significantly compared with NPK treatments”
t0“summer maize”
Claim · model-written summary
Leaf area index correlated more strongly with yield than photosynthetic rate did.
- Organ / stage
- leafe0
- Outcome
- correlations between leaf area index and yielde0
- Comparator
- photosynthetic rate and yielde0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The correlations between leaf area index and yield was more significant than that between photosynthetic rate and yield”
t0“summer maize”
Claim · model-written summary
Authors attribute low yields under unfertilized or deficient conditions to lower leaf area index and photosynthetic rate.
- Treatment
- long-term non-fertilization or nitrogen,phosphorus,potassium nutrient-deficiency conditione0
- Outcome
- low yieldse0
- Direction
- lowe0
- Qualifier
- decreased leaf area index and net photosynthetic ratee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The low yields under long-term non-fertilization or nitrogen,phosphorus,potassium nutrient-deficiency condition were mainly resulted from synthesis effects of the decreased leaf area index and net photosynthetic rate.”
t0“summer maize”
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