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Effects of Different Types of Soil on Yield Components of Early Indica Rice

WU Ting-fei,ZHOU Mei-lan (College of Agronomy,Hunan Agricultural University,Changsha,Hunan,410128,China)  
Five types of soils(alluvial soil,plate shale,purple soil,calcareous soil and red soil) and four early Indica rice varieties(Xiangzaoxian 24,Xiangzaoxian 31,Xiangzaoxian 32 and Xiangzaoxian 33) were used to conducted field experiment by split-plot design with 3 repetitions to study the effect of soil types on rice yield components in Hengyang Red Soil Experimental Station of Chinese Academy of Agricultural Sciences in 2004.The results indicated that rice yield components were affected by both soil factor and variety heredity characteristics.1000-grain weight,spikeletes per panicle,panicles per hill and plot yield were affected mainly by heredity characteristics,while seed setting rate and filled grain number were affected mainly by soil type.In purple soil, the highest 1000-grain weight,filled grain number,panicles per hill and seed setting rate and the lowest spikeletes per panicle were obtained.In calcareous soil,the lowest 1000-grain weight,filled grain numbers,panicles per hill and seed setting rate were obtained.In red soil,the higher filled grain number and panicles per hill and medium spikeletes per panicle,1000-grain weight and seed setting rate could obtained.In plate shale soil,the highest spikeletes per panicle was obtained.In alluvial soil,the higher seed setting rate,1000-grain weight and panicles per hill and the lower spikeletes per panicle and filled grain numbers were obtained.
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