摘要
为研究浙北桐乡地区梨锈病的发生规律、防治适期,筛选有效药剂,特开展桧柏上冬孢子角形成和成熟监测、不同时间施药的药效、8种药剂田间防治效果比较等试验。结果表明,冬孢子角的成熟高峰期在3月中旬;梨锈病的防治适期为3月下旬开始的前2次降雨的雨前;80%代森锰锌WP 500倍、30%唑醚·戊唑醇SC 800倍和10%苯醚甲环唑WG 800倍对品种玉冠和翠冠上的Ⅰ类芽叶上梨锈病的防治效果分别为89.62%、99.46%、99.38%和89.62%、96.90%、88.53%;Ⅱ类芽上叶与Ⅰ类芽上叶相似,但80%代森锰锌WP 500倍防治效果增加。3种药剂都可以很好地防治梨锈病,但结合不同药剂对果实品质的影响,10%苯醚甲环唑WG 800倍最佳。梨锈病的防治最关键的还是要掌握好防治适期,前两次雨为关键时期且雨前防治为最佳。
In order to know the outbreak regularity of pear rust disease,optimum control time,and effective fungicide,in this study,monitoring of forming and mature of pear rust's pathogen teliospore and optimum time,and effects of eight fungicides for disease control were investigated.The results indicated the mature peak of teliospore appeared in mid-March.It was better to control pear rust by fungicide before the first two rain from late March.The control efficiency of fungicides 500×80% mancozeb(WP),800×30%azole ether pentazolium(SC),and 800×10% difenoconazole(WG)to typeⅠbud leaves of pear varieties Yuguan and Chuiguan was 89.62%,99.46%,99.38% and 89.62%,96.90%,88.53% respectively.The control efficiency of three fungicides to type Ⅰ and type Ⅱ bud leaves was similar except efficiency of 500×80% mancozeb(WP)to type Ⅱ bud leaves was apparently higher than type Ⅰ.All three fungicides of 80% mancozeb(WP),30% azole ether pentazolium(SC),and 10% difenoconazole(WG)could control pear rust effectively,considering their effects on fruit quality,10% difenoconazole(WG)was the most optimal fungicide for pear rust control.The time of fungicides using was the most crucial factor to pear rust control,the optimum time was the first two rain from late March and spaying before raining was the best.
作者
吴嘉维
姚张良
胡琪琪
张杰
陈轶
蒋建荣
周国鑫
王霞
WU Jiawei;YAO Zhangliang;HU Qiqi;ZHANG Jie;CHEN Yi;JIANG Jianrong;ZHOU Guoxin;WANG Xia(Bureau of Agriculture and Rural Affairs of Tongxiang,Tongxiang 314500,China;Department of Plant Protection,Key Laboratory for Quality Improvement of Agriculture Products of Zhejiang Province,Zhejiang A&F University,Hangzhou 311300,China;Agricultural Economic Service Center of Wuzhen,Tongxiang 314501,China)
出处
《浙江农业学报》
CSCD
北大核心
2021年第9期1668-1675,共8页
Acta Agriculturae Zhejiangensis
基金
浙江省自然科学基金(LY19C140005)
杭州市农业和社会发展科研主动设计项目(20180416A03)
浙江省新苗人才计划(2019R412003)。
关键词
梨锈病
冬孢子角
药剂筛选
防治适期
果实品质
pear rust
teliospore
fungicide screening
optimum control time
fruit quality
