【摘要】 选择不同生育期的早、晚稻品种各8个,研究宽窄行和等行机插秧条件下不同品种的分蘖特性。结果表明:水稻机插秧缓苗期的长短与插秧机的性能有关;机插对早稻分蘖的影响大于晚稻,早稻比晚稻分蘖起始慢、分蘖期长,不同品种的单株分蘖数和有效穗数差异较大;在相同密度的情况下,宽窄行机插处理水稻在缓苗期后分蘖发生快、消亡慢,宽窄行机插有利增加水稻分蘖、有效穗数以及提高水稻产量;不同品种的机插适应性有差异,生育期短、单株分蘖力强和单株有效穗多的品种适合机插;机插对水稻缓苗的影响应该可以通过提高插秧机性能得到改善。更多还原

【Abstract】 A total of 8 early-season and late-season rice varieties with different growth periods were selected, and their tillering characteristics under wide-narrow row and equal row transplanting modes were studied. The results showed that the length of slow growth phase was related to the performance of transplanter; the effect of mechanical transplanting on tillering of early-season rice was greater than that of late-season rice; compared with late-season rice, early-season rice showed later tillering and longer tillering period; the tiller number per plant and effective panicle number per plant differed greatly among different varieties of double-season rice; under the condition of same transplanting density, the tillers of rice under widenarrow row transplanting mode appeared rapidly and disappeared slowly, and widenarrow row transplanting mode improved tillering, effective panicle number and yield of rice; different varieties of double-season rice showed different adaptability to mechanical transplanting, and the varieties with short growth period, strong tillering ability and more effective panicles per plant were more suitable for mechanical transplanting; the effect of mechanical transplanting on rejuvenation of rice could be improved by improving the performance of transplanter.更多还原