在生产实践中水稻黄矮病所产生的黄叶现象,容易与一般生理性黄叶或碳铵害、氨水害黄叶混淆。虽然可采用电检、血清反应来鉴别黄矮病,但这两种方法,需要一定设备,难于推广。若采用生物接种的方法,时问长,不能及时判断。为此,我们经过多次试验,以碘液显色反应来鉴别黄矮病效果好,简便易行。 In the production practice yellow dwarf disease caused by yellow leaf phenomenon, easily with the general physiological yellow leaf or ammonium bicarbonate damage, ammonia damage yellow leaves confused. Although dystonia can be detected by electropsy and serum reaction, both methods require some equipment and are difficult to popularize. If the method of biological inoculation, when asked long, can not judge in time. To this end, after many tests, we used iodine color reaction to identify the effect of yellow dwarf disease, simple and easy.