Abstract
Abstract Maize ( Zea mays L.) is considered one of the most important grains in the world. Straw return has the effect of reducing soil bulk density and increasing soil porosity. Straw returning and potassium fertilizer can supplement soil potassium content. The improvement of soil structure and the optimization of soil nutrient levels provide a good environment for high yield and high efficiency of maize. Therefore, three field experiments were carried out over a three-year period (2018–2020) to study the effects of straw returning on photosynthesis, dry matter accumulation and yield of maize 'Xianyu 335' under two different fertilization methods and four potassium application levels. The results showed that straw returning and potassium application had significant effects on the above indicators. The above indicators were significantly improved by deep tillage straw returning compared with no tillage straw returning. Increasing potassium supply can promote the effect of straw returning. The photosynthesis, dry matter accumulation and yield parameters of maize treated with straw returning and deep tillage combined with 60 kg/hm 2 potassium fertilizer (SFK60) reached the highest in the three harvest seasons. The corn planting profit of SFK45 treatment is the highest, which is $1868.92 per ha. Therefore, SFK45 is an effective way to ensure stable and high yield of corn and maximize farmers' income.
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Claims 9
Claim · model-written summary
photosynthesis improved under deep tillage straw returning compared with no tillage straw returning.
- Treatment
- deep tillage straw returninge0
- Outcome
- photosynthesise1
- Direction
- improvede0
- Comparator
- no tillage straw returninge0
Zea maysOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The above indicators were significantly improved by deep tillage straw returning compared with no tillage straw returning”
e1“photosynthesis, dry matter accumulation and yield of maize”
Claim · model-written summary
dry matter accumulation improved under deep tillage straw returning compared with no tillage straw returning.
- Treatment
- deep tillage straw returninge0
- Outcome
- dry matter accumulatione1
- Direction
- improvede0
- Comparator
- no tillage straw returninge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The above indicators were significantly improved by deep tillage straw returning compared with no tillage straw returning”
e1“photosynthesis, dry matter accumulation and yield of maize”
Claim · model-written summary
yield improved under deep tillage straw returning compared with no tillage straw returning.
- Treatment
- deep tillage straw returninge0
- Outcome
- yielde1
- Direction
- improvede0
- Comparator
- no tillage straw returninge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The above indicators were significantly improved by deep tillage straw returning compared with no tillage straw returning”
e1“photosynthesis, dry matter accumulation and yield of maize”
Claim · model-written summary
Increasing potassium supply promoted the effect of straw returning on maize performance.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increasing potassium supply can promote the effect of straw returning”
e1“photosynthesis, dry matter accumulation and yield of maize”
Claim · model-written summary
photosynthesis reached the highest level with SFK60 in three harvest seasons.
- Treatment
- straw returning and deep tillage combined with 60 kg/hm 2 potassium fertilizer (SFK60)e0
- Outcome
- photosynthesise0
- Direction
- higheste0
- Qualifier
- three harvest seasonse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The photosynthesis, dry matter accumulation and yield parameters of maize treated with straw returning and deep tillage combined with 60 kg/hm 2 potassium fertilizer (SFK60) reached the highest in the three harvest seasons”
Claim · model-written summary
dry matter accumulation reached the highest level with SFK60 in three harvest seasons.
- Treatment
- straw returning and deep tillage combined with 60 kg/hm 2 potassium fertilizer (SFK60)e0
- Outcome
- dry matter accumulatione0
- Direction
- higheste0
- Qualifier
- three harvest seasonse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The photosynthesis, dry matter accumulation and yield parameters of maize treated with straw returning and deep tillage combined with 60 kg/hm 2 potassium fertilizer (SFK60) reached the highest in the three harvest seasons”
Claim · model-written summary
yield parameters reached the highest level with SFK60 in three harvest seasons.
- Treatment
- straw returning and deep tillage combined with 60 kg/hm 2 potassium fertilizer (SFK60)e0
- Outcome
- yield parameterse0
- Direction
- higheste0
- Qualifier
- three harvest seasonse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The photosynthesis, dry matter accumulation and yield parameters of maize treated with straw returning and deep tillage combined with 60 kg/hm 2 potassium fertilizer (SFK60) reached the highest in the three harvest seasons”
Claim · model-written summary
SFK45 produced the highest corn planting profit, $1868.92 per ha.
- Taxon
- corn
Zea mays subsp. mayse0 - Treatment
- SFK45 treatmente0
- Outcome
- corn planting profite0
- Direction
- higheste0
- Value
- $1868.92 per hae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The corn planting profit of SFK45 treatment is the highest, which is $1868.92 per ha”
Claim · model-written summary
The authors recommend SFK45 to sustain high corn yield and maximize farmer income.
- Taxon
- cornZea mays subsp. mayse0
- Outcome
- SFK45 is an effective way to ensure stable and high yield of corn and maximize farmers' incomee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“SFK45 is an effective way to ensure stable and high yield of corn and maximize farmers' income”
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