[目的]明确25%咪唑烟酸水剂对非耕地杂草及恶性杂草狗牙根的防治效果。[方法]通过茎叶喷雾试验,比较咪唑烟酸、百草枯、草甘膦和草铵膦对非耕地杂草及狗牙根的防治效果。[结果]25%咪唑烟酸水剂1125、1500 ga.i./hm^2处理药后40 d对非耕...[目的]明确25%咪唑烟酸水剂对非耕地杂草及恶性杂草狗牙根的防治效果。[方法]通过茎叶喷雾试验,比较咪唑烟酸、百草枯、草甘膦和草铵膦对非耕地杂草及狗牙根的防治效果。[结果]25%咪唑烟酸水剂1125、1500 ga.i./hm^2处理药后40 d对非耕地杂草的株防效分别为98.45%、99.22%,显著高于41%草甘膦1500 g a.i./hm^2株防效(94.22%)、18%草铵膦可溶液剂900 g a.i./hm^2株防效(93.75%)和20%百草枯可溶胶剂750 g a.i./hm^2株防效(74.59%);鲜重防效呈现出与株防效一致的结果;25%咪唑烟酸水剂750、1125、1500 g a.i./hm^2药后60 d对狗牙根的株防效和鲜重防效均显著高于其他处理药剂,且不易返青。[结论]咪唑烟酸可以替代百草枯、草甘膦等,防除非耕地杂草和狗牙根,持效期更长。展开更多
[目的]明确27%苯醚甲环唑·咯菌腈·噻虫嗪悬浮种衣剂对小麦散黑穗病的防治效果及推荐用药量。[方法]采用拌种法测定其对小麦散黑穗病的田间防效。[结果]该悬浮种衣剂对小麦散黑穗病的防治效果和小区增产效果显著高于同等有效...[目的]明确27%苯醚甲环唑·咯菌腈·噻虫嗪悬浮种衣剂对小麦散黑穗病的防治效果及推荐用药量。[方法]采用拌种法测定其对小麦散黑穗病的田间防效。[结果]该悬浮种衣剂对小麦散黑穗病的防治效果和小区增产效果显著高于同等有效剂量下的30 g/L苯醚甲环唑悬浮种衣剂和25 g/L咯菌腈悬浮种衣剂。[结论]27%苯醚甲环唑·咯菌腈·噻虫嗪悬浮种衣剂最佳使用量为54～108 g a.i./100kg种子,能够有效地防治小麦散黑穗病,适合在实际生产中推广应用。展开更多
Background CT perfusion imaging （CTP） has been proved to be a powerful functional imaging technique. This study aimed to evaluate the value of CTP in guiding biopsy of pulmonary lumps. Methods A total of 147 patient...Background CT perfusion imaging （CTP） has been proved to be a powerful functional imaging technique. This study aimed to evaluate the value of CTP in guiding biopsy of pulmonary lumps. Methods A total of 147 patients with pulmonary lumps who had CT guided biopsies were enrolled in this study from February 2005 to June 2007. The patients were assigned to 3 groups： 33 cases guided by CTP as group 1, 45 cases guided by contrast-enhanced scan of CT as group Ⅱ, and 69 cases guided by plain scan of CT as group Ⅲ. Each group was subdivided into central and peripheral types according to the location of the lumps. The achievement ratio of biopsy, the accuracy in grouping, and grading of lung cancer, and the incidence of complication were compared. Results The total achievement ratios of biopsy from group Ⅰ to Ⅲ were 100% （33/33）, 91% （41/45）, and 80% （55/69） respectively, and the difference was statistically significant between group Ⅰ and Ⅲ （P 〈0.05）. For the central type, they were 100% （18/18）, 88% （15/17）, and 79% （11/14） respectively, and the difference was also statistically significant between group Ⅰand Ⅲ （P 〈0.05）. For the peripheral type, they were 100% （15/15）, 93% （26/28）, and 80% （44/55） respectivelies, and the difference was not statistically significant among the three groups. The total accuracies in grouping and grading of lung cancer from group Ⅰ to Ⅲ were 100% （27/27）, 91% （31/34）, and 72% （33/46） respectively, and the difference was statistically significant between group Ⅰ and Ⅲ and between group Ⅱ and Ⅲ （P 〈0.05）. For the central type, they were 100% （16/16）, 94% （16/17）, and 70% （8/12） respectively, and the difference was statistically significant between group Ⅰ and Ⅲ （P〈0.05）. For the peripheral type, they were 100% （11/11）, 88% （15/17）, and 72% （26/36） respectively, and the difference was statistically significant between group Ⅰ and Ⅲ （P 〈0.05）. The total incidence of complication from group Ⅰ to Ⅲ were 15% （5/33）, 27% （12/45）, and 43% （30/69） respectively, and the difference was statistically significant between group Ⅰ and Ⅲ （P 〈0.01）. For the central type, they were 11% （2/18）, 24% （4/17）, and 57% （8/14） respectively, and the difference was statistically significant between group Ⅰ and Ⅲ （P 〈0.01）. For the peripheral type, they were 20% （3/15）, 29% （8/28）, and 40% （22/55） respectively, and no statistically significant difference was found among the three groups. Conclusions CTP guided biopsy of pulmonary lumps using multi-detector row CT has the potential to improve the accuracy of histopathological diagnosis with a lower risk and higher achievement ratio. More research and technical improvements are needed before it is widelv used.展开更多
文摘[目的]明确25%咪唑烟酸水剂对非耕地杂草及恶性杂草狗牙根的防治效果。[方法]通过茎叶喷雾试验,比较咪唑烟酸、百草枯、草甘膦和草铵膦对非耕地杂草及狗牙根的防治效果。[结果]25%咪唑烟酸水剂1125、1500 ga.i./hm^2处理药后40 d对非耕地杂草的株防效分别为98.45%、99.22%,显著高于41%草甘膦1500 g a.i./hm^2株防效(94.22%)、18%草铵膦可溶液剂900 g a.i./hm^2株防效(93.75%)和20%百草枯可溶胶剂750 g a.i./hm^2株防效(74.59%);鲜重防效呈现出与株防效一致的结果;25%咪唑烟酸水剂750、1125、1500 g a.i./hm^2药后60 d对狗牙根的株防效和鲜重防效均显著高于其他处理药剂,且不易返青。[结论]咪唑烟酸可以替代百草枯、草甘膦等,防除非耕地杂草和狗牙根,持效期更长。
文摘[目的]明确27%苯醚甲环唑·咯菌腈·噻虫嗪悬浮种衣剂对小麦散黑穗病的防治效果及推荐用药量。[方法]采用拌种法测定其对小麦散黑穗病的田间防效。[结果]该悬浮种衣剂对小麦散黑穗病的防治效果和小区增产效果显著高于同等有效剂量下的30 g/L苯醚甲环唑悬浮种衣剂和25 g/L咯菌腈悬浮种衣剂。[结论]27%苯醚甲环唑·咯菌腈·噻虫嗪悬浮种衣剂最佳使用量为54～108 g a.i./100kg种子,能够有效地防治小麦散黑穗病,适合在实际生产中推广应用。
文摘Background CT perfusion imaging （CTP） has been proved to be a powerful functional imaging technique. This study aimed to evaluate the value of CTP in guiding biopsy of pulmonary lumps. Methods A total of 147 patients with pulmonary lumps who had CT guided biopsies were enrolled in this study from February 2005 to June 2007. The patients were assigned to 3 groups： 33 cases guided by CTP as group 1, 45 cases guided by contrast-enhanced scan of CT as group Ⅱ, and 69 cases guided by plain scan of CT as group Ⅲ. Each group was subdivided into central and peripheral types according to the location of the lumps. The achievement ratio of biopsy, the accuracy in grouping, and grading of lung cancer, and the incidence of complication were compared. Results The total achievement ratios of biopsy from group Ⅰ to Ⅲ were 100% （33/33）, 91% （41/45）, and 80% （55/69） respectively, and the difference was statistically significant between group Ⅰ and Ⅲ （P 〈0.05）. For the central type, they were 100% （18/18）, 88% （15/17）, and 79% （11/14） respectively, and the difference was also statistically significant between group Ⅰand Ⅲ （P 〈0.05）. For the peripheral type, they were 100% （15/15）, 93% （26/28）, and 80% （44/55） respectivelies, and the difference was not statistically significant among the three groups. The total accuracies in grouping and grading of lung cancer from group Ⅰ to Ⅲ were 100% （27/27）, 91% （31/34）, and 72% （33/46） respectively, and the difference was statistically significant between group Ⅰ and Ⅲ and between group Ⅱ and Ⅲ （P 〈0.05）. For the central type, they were 100% （16/16）, 94% （16/17）, and 70% （8/12） respectively, and the difference was statistically significant between group Ⅰ and Ⅲ （P〈0.05）. For the peripheral type, they were 100% （11/11）, 88% （15/17）, and 72% （26/36） respectively, and the difference was statistically significant between group Ⅰ and Ⅲ （P 〈0.05）. The total incidence of complication from group Ⅰ to Ⅲ were 15% （5/33）, 27% （12/45）, and 43% （30/69） respectively, and the difference was statistically significant between group Ⅰ and Ⅲ （P 〈0.01）. For the central type, they were 11% （2/18）, 24% （4/17）, and 57% （8/14） respectively, and the difference was statistically significant between group Ⅰ and Ⅲ （P 〈0.01）. For the peripheral type, they were 20% （3/15）, 29% （8/28）, and 40% （22/55） respectively, and no statistically significant difference was found among the three groups. Conclusions CTP guided biopsy of pulmonary lumps using multi-detector row CT has the potential to improve the accuracy of histopathological diagnosis with a lower risk and higher achievement ratio. More research and technical improvements are needed before it is widelv used.
