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辽宁棉区棉苗根病发生严重且普遍,发病种类以红腐病为主,立枯病次之,炭疽病等较少。从1980～1984年应用25%粉锈宁可湿粉或胶悬剂0.1～0.5%拌种试验,对棉苗根病有很好的防治效果,田间防效为68.60～92.27%,不仅好于对照(不处理)也远远超过五赛合剂0.5%拌种的效果,0.3%和0.5%两处理对抑制出苗比较严重,比对照晚出苗3～4天。因此,安全经济有效的拌种用药量为0.2%,棉苗长势好,保苗率高,对出苗虽有轻微的抑制作用,但不影响棉株后期生育和产量,亩增收皮棉10～20斤。
Cotton seedling root zone disease in Liaoning cotton area is serious and common. The main types of red cotton seedling are red rot disease, less blight then anthracnose disease and so on. From 1980 to 1984, application of 25% triadimefon or 0.1-0.5% seed dressing test showed good control effect on seedling root blight. The control effect was 68.60-92.27% in the field, which was not only better than the control Not treated) is far more than 0.5% mixture of five matchs.The effect of 0.3% and 0.5% treatments on the inhibition of emergence is more serious than the control seedling 3-4 days. Therefore, safe and cost-effective seed dressing dosage of 0.2%, cotton seedlings grow well, seedling rate is high, although the emergence of a slight inhibitory effect, but does not affect the late cotton growth and yield, increase litchi 10 to 20 pounds.