
播期对三江平原主栽水稻品种生育期和产量的影响
Effects of Sowing Date on Growth Duration and Yield of Main Planted Rice Varieties in Sanjiang Plain
马瑞1,黄成亮1,孟英2,刘猷红2 . 播期对三江平原主栽水稻品种生育期和产量的影响[J]. 中国稻米, 2019 , 25(6) : 79 -82 . DOI: 10.3969/j.issn.1006-8082.2019.06.018
The main growth stages, growth duration, yield and yield components of the five main planted rice varieties in Sanjiang plain were analyzed by sowing date test. The results showed that when the sowing date was delayed, the growth duration of varieties reduced significantly, and mainly reflected in the reduction of the growth days from seeding to jointing, there were no significant changes from jointing to heading and heading to maturity; the days from seeding to heading was reduced, which was related to the increase of the average daily temperature and the decrease of the average daily light hours. The later-maturing varieties were conducive to high yield by early seeding; the medium-maturing varieties and early-maturing varieties could reach higher yield by properly delaying the sowing date.
Key words: rice; sowing date; growth duration; yield
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