水稻钵苗宽窄行机插高产及适宜密度试验示范

Effects of the Mode and the Density of Transplantation of Potted Rice Seedlings by the Machine Setting Unequal Row Spacings on its Yield

为试验示范水稻钵苗宽窄行机插方式、栽插密度及高产途径,选用Ⅱ优118、C两优608、南粳505、南粳2728共4个品种为试验材料,展示不同机插方式和密度对不同水稻品种产量的影响。结果表明:钵苗宽窄行(宽33 cm、窄23 cm)机插杂交籼稻的适宜株距为16～17 cm,常规粳稻适宜的株距为12～14 cm,该密度水平的产量结构较为合理,主要表现为穗数足、穗型和千粒质量适中。

In order to develop high-yielding cultivation technology for rice based on mechanical transplantation of seedlings, the current research investigated the effects of the mode and density of transplantation of potted rice seedlings by the machine that sets wide and narrow row spacings on its yield. Four rice varieties were selected as experimental materials, consisting of two hybrid indica rice varieties and two japonica rice varieties. As a result, with the wide and narrow row spacings of 33 and 23 cm, respectively, set by the machine, the suitable plant spacings for mechanical transplantation of potted seedlings were 16-17 cm for hybrid indica rice varieties,and 12-14 cm for japonica rice varieties. These planting densities resulted in suitable yield structure.