NO-TILLAGE AND WIDE PLANT SPACING FOR HYBRID RICE PRODUCTION IN SOUTHWEST CHINA

文献类型: 外文期刊

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关键词: no-tillage;hybrid rice;grain yield;yield components

期刊名称:ROMANIAN AGRICULTURAL RESEARCH ( 影响因子:0.5; 五年影响因子:0.616 )

ISSN: 1222-4227

年卷期: 2017 年 34 卷

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收录情况: SCI

摘要: No-tillage and wide plant spacing (NTWP) is an effective rice production method for saving labour. In order to understand performance of hybrid rice under NTWP in Southwest China, a field experiment was conducted to compare different tillage (conventional tillage or no-tillage) and plant spacing (normal or wide) in 2010-2014. Grain yield, yield components and maximum tillers per m(2) were measured each year, and biomass production was determined in 2013-2014. A three-line hybrid rice, Chuangxiang9838 was grown in each cultivation method in 2010-2014. Grain yield of hybrid rice under NTWP and conventional tillage and normal plant spacing (CTNP) were equal. Compared with under CTNP, hybrid rice under NTWP was characterized by more spikelet number per panicle but less panicle number per m(2), lower biomass production but higher harvest index. The mean grain filling across years was slightly higher under NTWP than under CTNP. Lower maximum tillers per m2 were partially responsible for difference in panicle number per m(2) between NTWP and CTNP, because there was no significant difference observed in panicle-bearing rate in them. Our study suggested that CTNP could be replaced with NTWP to save labour for hybrid rice production in Southwest China, while maintaining rice yield.

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