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The mechanism of high yielding in rice under dry raising seedling and thin planting and its regulating technique Ⅱ.Ecological mechanism of high yielding in rice under dry raising and thin planting

Wang Songliang Lin Wenxiong Liang Yiyuan Yu Gaojing (College of Crop Science, Fujian Agricultural University, Fuzhou 350002)  
Resulting from nursing with fertilizing seedling bed, the total number of soil microorganism and soil enzyme activities were increased, which in turn improved the efficiency of soil nutrients, thus produced the seedlings with vigorous roots, dwarf plants and more low node tillers.The studies also showed that the seedlings from dry raising had the physiochemical advantage both before and after transplanting.It could conclude that the growth of individual and population of rice harmonized through dry raising and thin planting, with the rates of tiller enhanced at middle stage and the high photosynthetic efficient population formed at late stage, at last the distribution of its panicles optimized, the analysis of grain yield structure showed that its panicles were distributed on main stem and 1/0-5/0 tillers, comparatively the controls ′ on main stem and 3/0-7/0 tillers.
【Fund】: 农业部丰收项目;福建省教委基金
【CateGory Index】: S511.101
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