| 杀菌剂对水稻旱育秧立枯病的控制作用及其对秧苗的生理效应 |
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| 引用本文： | 刘峰,慕卫,张文吉,张军.杀菌剂对水稻旱育秧立枯病的控制作用及其对秧苗的生理效应[J].农药学学报,2004,6(2):37-42. |
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| 作者姓名： | 刘峰 慕卫 张文吉 张军 |
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| 作者单位： | 1.山东农业大学 植物保护学院,山东 泰安 271018 |
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| 基金项目： | 国家自然科学基金资助项目(39670429). |
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| 摘 要： | 为了筛选防治水稻旱育秧立枯病的有效药剂,通过秧盘试验和室内致病菌离体毒力测定,结合考察药剂对秧苗生长的影响,对保护性杀菌剂代森锰锌和福美双以及内吸治疗性杀菌剂稻瘟灵、 FDA1 霉灵等进行了系统评价。结果表明, FDA1 霉灵、甲基硫菌灵和稻瘟灵对致病菌离体毒力虽然不高,但由于 FDA1 霉灵和甲基硫菌灵对水稻秧苗生长均有促进作用,稻瘟灵能显著提高秧苗抗低温胁迫能力,这3种药剂对水稻立枯病的防治效果较好,防效达65%~81%;而离体毒力虽然高,但对秧苗生长不利的三唑酮、丙环唑和烯唑醇等三唑类药剂效果稍差,防效为51%~75%。根据试验结果提出稻瘟灵是防治该类病害的一种较理想的单用或混用药剂;针对水稻立枯病的发生受环境影响大、病原种类多等特点,指出在研究防治药剂时应采用活体筛选为主、离体筛选为辅的筛选方法,而且提倡不同杀菌谱品种的混用。
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| 关 键 词： | 水稻 旱育秧 立枯病 控制 生理效应 |
| 文章编号： | 1008-7303(2004)02-0037-06 |
| 收稿时间： | 2003/2/19 0:00:00 |
| 修稿时间： | 2003年2月19日 |
Control of Rice Blight on Dry Nursery Seedling by Fungicide and Physiological Regulation on Rice Seedling |
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| LIU Feng,MU Wei,ZHANG Wen-ji and ZHANG Jun.Control of Rice Blight on Dry Nursery Seedling by Fungicide and Physiological Regulation on Rice Seedling[J].Chinese Journal of Pesticide Science,2004,6(2):37-42. |
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| Authors: | LIU Feng MU Wei ZHANG Wen-ji and ZHANG Jun |
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| Institution: | 1.College of Plant Protection, Shandong Agricultural University, Tai'an 271018, China2.College of Biology, China Agricultural University. Beijing 100094, China3.College of Science, China Agricultural University, Beijing 100094, China |
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| Abstract: | In order to select active fungicide for control rice seedling blight, the effects of several protective fungicides, such as mancozeb and thiram, and some systemic fungicides, such as isoprothiolane, hymexazol etc. were evaluated by nursery dish test. Lab toxicity test on two pathogens caused rice seedling blight of Rhizoctonia solani and Fusarium spp. in vitro and test of effect of fungicides on rice seedling growth were also conducted. The results showed that isoprothiolane, hymexazol and thiophanate-methyl, which had lower toxicity to the pathogens but stimulated seedling growth and improved resistance to low temperature stress of seedling, had good effects on control rice blight of dry nursery seedling, their protected effects varied from 65% to 81%. On the contrary the triazole fungicides such as triadimefon, propiconazole and diniconazole, which had higher toxicity to the pathogens but inhibited seedling growth, had lower control effects, their protected effects varied from 51% to 75%. Thus isoprothiolane is a better fungicide for control of rice seedling blight. It can be used single or mixed with other fungicides. For the control of the happening of rice seedling blight disease, caused by several pathogens and influenced by low temperature and alkaline of soil, it is suggested that the in vivo test first, then the in vitro test should be used for the screening of the active compounds and combination of fungicides of (different) active range is necessary in control practice. |
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| Keywords: | rice dry nursery seedling rice blight control physiological effect |
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