厦门大学学报（自然科学版）2016，Vol.55Issue(6)：853-859,7.DOI:10.6043/j.issn.0438-0479.201603045
2个再生稻品种机械化生产的产量构成分析
Analysis of Yield Components of Two Ratoon Rice Cultivars Through Mechanized Production
摘要
Abstract
Grain yield and its components were investigated and analyzed for two rice cultivars Yongyou 2640 and Jiafuzhan planted at Jianyang District Tanxiang Rice Cooperative in order to explore the method of yield increase of ratoon rice through mechanized production.The results showed that Yongyou 2640 exhibited dwarfism,lodging resistance,large panicle and high spikelet density,and yielded (10 598±1 433)kg/hm2 in the first crop and (10 126±1 527)kg/hm2 in the second crop respectively.Jiafuzhan with short growth duration was able to adapt to climatic ecological conditions with short safe growth period in Northern Fuj ian,and yielded (7 006± 1 399)kg/hm2 in the first crop and (6 443 ± 1 357)kg/hm2 in the second crop,respectively.Ratoon rice yield was composed of panicle numbers per square meter,spikelets per panicle,seed setting rate and 1 000-grain weight.Seed setting rate and 1 000-grain weight of two rice cultivars both showed little variation,which both had no significant correlation with the yield,while panicle numbers per square meter and spikelets per panicle both exhibited large variations,which had significant or almost significant positive relation to the yield.The total spikelets per square meter composed of panicle numbers per square meter and spikelets per panicle had a larger variation,which was highly related to the yield,with more than 0.9 7 of the contribution rate,and was a key fac-tor of yield components.The total spikelets per square meter had significant or extremely significant positive relation to panicle num-bers per square meter and spikelets per panicle.Among them,the correlation coefficient between the total spikelets per square meter and panicle numbers per square meter in the first crop was very high,but the difference of correlation coefficient between the total spikelets per square meter and panicle numbers per square meter or spikelets per panicle in the second crop was small.Thus,a major method for increasing the yield of ratoon rice through mechanized production is enhancing the total spikelets per square meter,inclu-ding panicle numbers per square meter and spikelets per panicle,which focuses on raising panicle numbers per square meter in the first crop and the combination of panicle numbers per square meter and spikelets per square meter in the second crop.关键词
再生稻/产量构成/相关分析/机械化生产Key words
ratoon rice/yield components/correlation analysis/mechanized production分类
农业科技引用本文复制引用
廖海林,郑景生,李小萍,解振兴,黄信恩,李义珍,黄育民,王侯聪..2个再生稻品种机械化生产的产量构成分析[J].厦门大学学报（自然科学版）,2016,55(6):853-859,7.基金项目
福建省科技重大专项(2013NZ0002-2) （2013NZ0002-2）
国际原子能机构合作项目(CRP17031) （CRP17031）
