| Effect of sowing date on growth and yield of maize |
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| DOI：10.7606/j.issn.1000-7601.2017.05.03 |
| Key Words: different sowing dates maize growth yield |
| Author Name | Affiliation | | LUO Xin-lan | Shenyang Agricultural University, Shenyang, Liaoning 110866, China | | CUI Jia-long | Shenyang Agricultural University, Shenyang, Liaoning 110866, China | | CAI Fu | Institute of Atmospheric Environment, China Meteorological Administration, Shenyang, Liaoning 110166, China | | CHEN Wei | Meteorological Bureau of Beipiao City, Beipiao, Liaoning 122100, China | | ZHU Ming-yu | Shenyang Agricultural University, Shenyang, Liaoning 110866, China |
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| Abstract: |
| The effect of temperature on maize growth and yield capacity in Liaoning Province were analyzed based on experimental data of different sowing dates in test plots of Zhuanghe and Jinzhou city from 2012 to 2014. With an interval of 10 to 15 days and (stand) planting density of 4.2 plant·m-2, the test was undertaken in 5 different sowing dates, each of which was divided into 4 subsections so as to observe maize growth indices. The results showed that there was a negative correlation relationship between the duration of the maize growth at each development period and the corresponding temperature while the sunlight and soil moisture conditions were appropriate in the two places. The duration period of sowing to seedling emergence was short when the daily minimum temperature was below 15℃, while it gradually increased when the temperature was over 15℃. The duration of tasseling to maturation period prolonged as the sowing date was delayed. There was no significant difference in the period of seedling emergence to tasseling while different sowing dates were in the same temperature condition. More beneficial to maize yield was that the ≥10℃ active accumulated temperature was about 1 500 ℃·d and the daily range of temperature was about 8.0℃～8.5℃ from tasseling to maturation period. |
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