Abstract
Objective This study aims to determine the suitable sowing date for the cultivation of ordinary maize in red soil dryland of Jiangxi Province. Method The experimental materials used in this study were Zhengdan 958 and Xianyu 335 maize varieties.The sowing date treatments were set between May and July in 2021 and 2022.The study investigated the changes of maize yield and its contributing factors under different sowing date.The aim of this study was to provide theoretical reference for high-yield maize cultivation in Jiangxi Province. Result The adjustment of the sowing date significantly impacted the growth process，pre- and post-silking material accumulation，and the final yield of maize.Planting maize in early May yielded the highest （5529.99 kg/hm2），with a downward trend observed with delayed sowing dates.Ear grain number emerged as the primary factor influencing production with changes in sowing dates.Furthermore，grain weight was notably affected by adjustments in the sowing date and exhibited a significant positive correlation with grain weight during the maximum grain filling rate.In terms of hybrid comparison，Zhengdan 958 showed a higher overall yield than that of Xianyu 335. Conclusion In order to achieve a higher yield in common maize cultivation in the red soil dryland of Jiangxi，it is recommended to select suitable varieties and sow them before early/mid-May，while ensuring that it does not interfere with the cultivation of winter crops such as rapeseed.
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Claims 9
Claim · model-written summary
Sowing date significantly affected maize growth process.
Zea maysNot reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The adjustment of the sowing date significantly impacted the growth process，pre- and post-silking material accumulation，and the final yield of maize.”
Claim · model-written summary
Sowing date significantly affected pre- and post-silking accumulation.
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The adjustment of the sowing date significantly impacted the growth process，pre- and post-silking material accumulation，and the final yield of maize.”
Claim · model-written summary
Sowing date significantly affected final maize yield.
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The adjustment of the sowing date significantly impacted the growth process，pre- and post-silking material accumulation，and the final yield of maize.”
Claim · model-written summary
Early May sowing gave the highest yield, 5529.99 kg/hm2, declining with delayed sowing.
- Treatment
- early Maye0
- Outcome
- yieldede0
- Direction
- higheste0
- Value
- 5529.99 kg/hm2e0
- Comparator
- delayed sowing datese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Planting maize in early May yielded the highest （5529.99 kg/hm2），with a downward trend observed with delayed sowing dates.”
Claim · model-written summary
Ear grain number was the main factor associated with sowing-date yield changes.
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Ear grain number emerged as the primary factor influencing production with changes in sowing dates.”
t0“maize”
Claim · model-written summary
Sowing date significantly affected grain weight.
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“grain weight was notably affected by adjustments in the sowing date”
t0“maize”
Claim · model-written summary
Grain weight was positively correlated with grain weight at maximum filling rate.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“exhibited a significant positive correlation with grain weight during the maximum grain filling rate.”
t0“maize”
Claim · model-written summary
Zhengdan 958 yielded more than Xianyu 335.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Zhengdan 958 showed a higher overall yield than that of Xianyu 335.”
t0“maize”
Claim · model-written summary
The authors recommend suitable varieties sown before early or mid May while preserving winter cropping.
- Outcome
- select suitable varieties and sow them before early/mid-Maye0
- Qualifier
- does not interfere with the cultivation of winter crops such as rapeseede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“it is recommended to select suitable varieties and sow them before early/mid-May，while ensuring that it does not interfere with the cultivation of winter crops such as rapeseed.”
t0“maize”
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