| 张志敏1, 侯发民1, 张绍阳1, 李晓明2, 吴琴芳3.植物源农药对刺梨白粉病田间防效及其品质和产量的影响[J].植物保护,2020,46(5):276-280. |
| 植物源农药对刺梨白粉病田间防效及其品质和产量的影响 |
| Effect of botanical fungicides on powdery mildew, quality and yield of Rosa roxburghii |
| 投稿时间：2020-01-22 |
| DOI：DOI: 10.16688/j.zwbh.2020055 |
| 中文关键词: 刺梨 植物源农药 白粉病 防治效果 品质 |
| 英文关键词:Rosa roxburghii botanical fungicide powdery mildew control effect quality |
| 基金项目:贵州省科技厅合作计划（黔科合LH字［2016］7301号）；贵州省林学重点学科建设（黔学位办［2017］45号）; 贵州省梵净山地区生物多样性保护与利用重点实验室建设(黔科合平台人才［2020］2003) |
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| 中文摘要: |
| 为筛选有效防治刺梨白粉病的植物源农药, 以‘贵农5号’为试材, 研究5种植物源农药对刺梨白粉病的防治效果以及对果实品质及产量的影响。结果表明, 连续两次施药后, 植物源农药对刺梨白粉病防效良好, 能提高果实品质, 增加产量; 其中, 0.5%大黄素甲醚AS、0.5%小檗碱AS药后7 d防效分别为88.09%、85.82%, 药后14 d 防效分别为82.07%、83.27%, 与化学药剂相当; 0.5%大黄素甲醚AS处理组果实品质最佳, 相对化学药剂处理果实中可溶性固形物、可溶性糖、维生素C含量分别提高22.11%、24.58%、11.26%, 抗氧化能力增强6.72%; 6%大蒜素EC、0.5%大黄素甲醚AS、0.5%小檗碱AS处理与化学药剂25%嘧菌酯SC处理相比产量无明显差异, 增产作用相当, 增产率分别为143.02%、152.29%、148.38%; 从对刺梨白粉病田间防治效果、果实品质、产量等因素综合考虑, 0.5%大黄素甲醚AS是防治刺梨白粉病的最佳植物源农药。 |
| 英文摘要: |
| In order to screen effective botanical fungicide against powdery mildew of Rosa roxburghii Tratt., the control effects of five botanical fungicides were tested on variety ‘Guinong 5’ and their effects on fruit quality and yield were also analyzed. The results showed that all the five botanical fungicides had the good control effects on the powdery mildew of R.roxburghii, and could improve the fruit quality and increase the yield after 2 consecutive applications. Among them, the control efficacies of physcion 0.5%AS and berberine 0.5%AS were 88.09% and 85.82%, respectively, 7 d after application, and 82.07% and 83.27% 14 d after application, respectively, which were equivalent to the effect of chemical fungicide (azoxystrobin 25% SC). The fruit quality treated by physcion 0.5% AS was the best and the contents of soluble solids, soluble sugar, and vitamin C increased by 22.11%, 24.58% and 11.26%, respectively and antioxidant capacity increased by 6.72% compared with chemical fungicide treatment group. There was no significant difference in yield between botanical fungicides (allicin 6%EC, physcion 0.5%AS, berberine 0.5%AS) and chemical pesticide azoxystrobin 25%SC. The yield of groups treated with allicin 6%EC, physcion 0.5%AS and berberine 0.5%AS increased by 143.02%, 152.29% and 148.38%, respectively, compared to the blank control. Considering the field control effects of powdery mildew of R. roxburghii and effects on fruit quality and yield, physcion 0.5% AS can be considered as one of the optimal botanical fungicides for the control of R. roxburghii powdery mildew. |
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