%0 Journal Article
%T Effect of Direct Sowing Rates on Mid-season ¡°Rice Feng-liang-you-xiang-1¡±
%A Wen-jing He
%A Peng-fei Li
%A Zhi-hua Yuan
%A Yan-xia Zhang
%J Advance Journal of Food Science and Technology
%D 2013
%I Maxwell Science Pubilication
%X To study the suitable seeding rate of middle-season rice sown directly in Jianghan Plain, 6 treatments were set up with different seeding rates for hybrid rice Feng-liang-you-xiang-1 which was sown directly: 22.5, 30, 37.5, 45, 52.5, 60 kg/hm2, respectively and the optimum seeding rate was selected. Some initiative results were made. The seeding rate influences whole growth period, yield components, yield and relative economic output of Feng-liang-you-xiang-1 significantly. It shows a quadratic curve relationship between seeding rate and whole growth period and when the seeding rates were less than 30 kg/hm2 or more than 52.5 kg/hm2, the whole growth period was obviously shortened compared with that of other seeding rate. Among the yield components, panicles, grains panicles, seed-setting rate and harvest index are effected very significantly by the seeding rate, showing a linear relationship of quadratic curve; while to 1000 seed weight the influence don¡¯t reach the level of significant difference. And seeding rate shows in curve relation to yield (y = 2.5248x2 + 198.89x + 7620.1); when the seeding rate is 39.387 kg/hm2, the yield reaches the maximum value of 11536.95 kg/hm2.
%K Direct sowing
%K middle-season rice
%K Production
%K Seeding rate
%U http://www.maxwellsci.com/jp/abstract.php?jid=AJFST&no=287&abs=10