密度运筹对准两优527产量及构成因素的影响

Effect of Different Densities on Yield and Tts Components of Rice Zunliangyou 527

以超级稻准两优527为试验材料,进行了不同栽培密度试验。结果表明:不同移栽密度对产量及其构成因素影响较大,其中以7.5万穴/hm2,每穴栽2株苗产量最高,达到12325.5kg/hm2;该移栽方式不需进行排水晒田控蘖,还能节约生产成本,同时操作简便,易被农民接受,值得在贵州山区推广。

The experiment of plant density was carried out with Zhunliangyou 527 （a super rice variety）. The results indicated the grain yield and its components had significant difference between various transplanting densities. The highest yield of 12 325.5 kg/hm^2 can be gained by the plant density was 75 thousand hole/hm^2 and two seedlings/hole. This transplanting method can increased significantly the grain yield and decreased plant cost, did not controlling ineffective tillering , can be accepted and popularized in Guizhou mountain area.