粳稻不同机插密度比较试验

Comparison Experiment of Different Density of Mechanized Transplanting on Japonica Rice

为挖掘亭湖地区机插粳稻产量潜力，开展了不同机插密度比较试验。结果表明：不同机插密度对叶龄、株高无明显影响，适宜的机插密度能获得优质的群体质量，从而建立合理的穗粒结构，产量较高。在本地生产条件下，行距控制在25 cm、穴栽3.6株时，推荐使用的株距为14～16 cm。

Comparison experiment of different density of mechanized transplanting were made in order to tap potential of yield. The result indicated that different density of mechanized transplanting have no significant effect on leaf age and plant height, appropriate density of mechanized transplanting can obtain superior population quality, thus build reasonable spike-grain structure of rice for high yield. Under the local production conditions, when the row-spacing was 25 cm and planting 3.6 rice/hole, the spacing recommend using 14-16 cm.