论文部分内容阅读
采用HPLC测定50%吡虫啉·1%苯醚甲环唑悬浮种衣剂采用种子包衣后浸种法处理水稻种子时药剂的损失量。室内采用滤纸法,考察种子包衣后浸种对水稻的安全性评价以及对稻飞虱的防治效果。结果显示:拌种水稻浸泡48 h后,吡虫啉的损失量为21.62%,苯醚甲环唑的损失量为23.75%。种子采用50%吡虫啉·1%苯醚甲环唑悬浮种衣剂包衣后浸种水稻的发芽率与ck存在显著差异,而水稻的根长、侧根数和株高与ck没有显著差异;这表明:采用50%吡虫啉·1%苯醚甲环唑悬浮种衣剂包衣后浸种水稻对水稻发芽有刺激作用,但对水稻幼苗素质没有影响。用50%吡虫啉·1%苯醚甲环唑悬浮种衣剂包衣后浸种处理的水稻幼苗受稻飞虱危害明显低于ck。这表明:50%吡虫啉·1%苯醚甲环唑悬浮种衣剂采用种子包衣后浸种处理水稻,能很好的控制水稻苗期稻飞虱的危害。
The loss of medicament when 50% imidacloprid · 1% difenoconazole suspension seed coating was treated by seed coating and soaking seeds to treat rice seeds was determined by HPLC. Indoor use of filter paper to study the seed coating after soaking the rice safety evaluation and planthopper control effect. The results showed that the imidacloprid loss was 21.62% and the difenoconazole loss was 23.75% after 48 h immersion. The germination percentage of seed soaked with 50% imidacloprid-1% difenoconazole seed coating was significantly different from that of ck, while the root length, lateral root number and plant height of rice had no significant difference with ck : Soaking rice with 50% imidacloprid · 1% difenoconazole seed coating could stimulate rice germination but had no effect on rice seedling quality. Rice seedlings treated with 50% imidacloprid-1% difenoconazole suspension seed coating after soaking treatment were significantly less susceptible to planthopper infestation than ck. The results showed that 50% imidacloprid and 1% difenoconazole seed coating could be used to seed rice seed soaking rice, which could control the harm of planthopper.