The growth and yield of a wet-seeded rice-ratoon rice system in central China
The growth and yield of a wet-seeded rice-ratoon rice system in central China
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华中地区湿稻再生稻系统的生长和产量
DOI：
10.1016/j.fcr.2017.04.003
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发表时间：
2017-07-01
影响因子：
5.8
通讯作者：
Nie, Lixiao
中科院分区：
文献类型：
--
作者：
Dong, Huanglin;Chen, Qian;Nie, Lixiao
再生稻制度是在水稻生产的适宜温度时间太短而无法种植双季稻以及劳动力短缺限制作物种植的地区增加粮食生产的一种方法。从传统的插秧改为在积水土上直播（湿播：WSR），进一步减少了水稻-再生稻系统的劳动力需求。因此，我们在2015年和2016年在中国中部比较了湿播稻-再生稻系统（WSR-RR）和传统移栽稻-再生稻系统（TTR-RR）的表现。再生季产量（4.05-5.83 t ha ~（-1））和年产量（12.4-15.7 t ha ~（-1））与常规栽培相当。总之，WSR-RR是TTH-RR的替代水稻种植系统。WSR-RR的再生季产量与每平方米穗数有关，而TTR-RR的再生季产量与每穗颖花数有关。在WSR-RR中，常规稻品种（黄花占）的再生率显著低于TTR-RR，而杂交稻品种（天优花占）WSR-RR和TTR-RR的再生率差异不显著。
A ratoon rice system is one method to increase food production in areas where the period of favourable temperature for rice production is too short for double rice, and where labour scarcity constrains crop establishment. Changing from traditional transplanting to direct seeding on the puddled soil (wet seeding: WSR) further reduces the labour requirement for the rice-ratoon system. Therefore, we compared the performance of a wet-seeded rice-ratoon rice system (WSR-RR) with a traditional transplanted rice-ratoon rice system (TTR-RR) in central China in 2015 and 2016. The ratoon season yields (4.05-5.83 t ha(-1)) and annual grain yields (12.4-15.7 t ha(-1)) of WSR-RR were comparable to those of TTR-RR. In short, WSR-RR is an alternative rice planting system to TTH-RR. The higher panicle number per m2 contributed to the ratoon season yield in WSR-RR, by contrast, the ratoon season yield in TTR-RR was attributed to a higher number of spikelets per panicle. The regeneration rates of inbred rice variety (Huanghuazhan) in WSR-RR were significantly lower than those in TTR-RR, while there was no difference in the regeneration rate between WSR-RR and TTR-RR for hybrid rice variety (Tianyouhuazhan).