[1]朱凤,张燕,易红娟,等.不同始病期水稻纹枯病消长动态及防治适期[J].江苏农业学报,2020,(01):63-69.[doi:doi:10.3969/j.issn.1000-4440.2020.01.009]
　ZHU Feng,ZHANG Yan,YI Hong-juan,et al.Discussion on growth and decline trends of rice sheath blight in different disease starting periods and its optimum control period[J].,2020,(01):63-69.[doi:doi:10.3969/j.issn.1000-4440.2020.01.009]
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不同始病期水稻纹枯病消长动态及防治适期()
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江苏农业学报[ISSN:1006-6977/CN:61-1281/TN]

卷:
期数:
2020年01期
页码:
63-69
栏目:
植物保护
出版日期:
2020-02-29

文章信息/Info

Title:
Discussion on growth and decline trends of rice sheath blight in different disease starting periods and its optimum control period
作者:
朱凤1; 张燕2; 易红娟3; 田子华1
（1.江苏省植物保护植物检疫站，江苏南京210036；2.江苏省南通市通州区金新街道办事处，江苏南通226300；3.江苏省南通市通州区植物保护站，江苏南通226300）
Author(s):
ZHU Feng1; ZHANG Yan2; YI Hong-juan3; TIAN Zi-hua1
(1.Plant Protection and Quarantine Station of Jiangsu Province, Nanjing 210036, China;2.Jinxin Sub-District Office of Tongzhou, Nantong 226300, China;3.Plant Protection and Quarantine Station of Tongzhou, Nantong 226300, China)
关键词:
水稻纹枯病;  始病期; 消长动态; 防治适期
Keywords:
rice sheath blight; disease starting period; growth and decline trends; optimum control period
分类号:
S435.111.4+2
DOI:
doi:10.3969/j.issn.1000-4440.2020.01.009
文献标志码:
A
摘要:
为探明不同始病期水稻纹枯病发生规律及不同时期施药对水稻纹枯病的控制效果，2018年在江苏沿江稻区，分别系统调查分蘖期和拔节孕穗期始发的病株率和病情指数后进行病情消长动态分析，并分别进行田间药效试验，移栽后7 d施用8%噻呋·嘧菌酯（3 000 g/hm2），病穴率达20%及破口期施用240 g/L噻呋酰胺悬浮剂（300 ml/hm2）。结果表明：分蘖期、拔节孕穗期始发病发病高峰的病株率分别为83.56%、75.56%，病情指数分别为32.67、36.19，病害停止期病株率分别为44.00%、51.67%，病情指数分别为 25.24、28.26，Logistic 函数分析得出病株率盛发历期分别为17.85 d、12.30 d，病情指数盛发历期分别为14.13 d、12.96 d。移栽后7 d施药，发病高峰病株率和病情指数分别为12.69%和6.91，病害停止期病株率和病情指数分别为6.67%和4.02，Logistic 函数分析得出病株率和病情指数盛发历期分别为11.50 d和17.43 d，病害控制效果明显；病穴率达20%及破口期施药，发病高峰病株率和病情指数分别为44.59%和12.00，病害停止期病株率和病情指数分别为11.33%和3.78，Logistic 函数分析得出病株率和病情指数盛发历时分别为23.78 d和21.94 d，第1次药后对病害控制效果较差，需在破口期再次施药。可见，在相同年份与地域，始病期早迟对水稻纹枯病最终发生程度影响不大；发病前施用8%噻呋·嘧菌酯对病害控制效果优良，水稻纹枯病防治适期可提前。
Abstract:
In order to investigate the occurrence regularity in different disease starting periods (DSP) and the control efficacy of fungicide application in different periods on rice sheath blight (RSB), the diseased plant rate (DPR) and disease index (DI) of RSB with the DSP at tillering period (TP) and jointing-booting period (JBP) had been systematically investigated in Yangtze River rice planting region, Jiangsu province in 2018, respectively, and then the growth and decline trends of RSB had been analyzed. In addition, the field control tests had been conducted with applying 8% thifluzamide·azoxystrobin (3 000 g/hm2） after transplanting for seven days and applying 240 g/L thifluzamide suspension concentrate (SC) at rates of 300 ml/hm2 when the diseased hole rate reached 20% and at the rupturing period. The results showed that the peak values of DPR with the DSP at TP and JBP were 83.56% and 75.56%, and those of the DI were 32.67 and 36.19, respectively. Furthermore, the diseased plant rates with the DSP at TP and JBP in disease stopping period were 44.00% and 51.67%, and the disease indices were 25.24 and 28.26, respectively. According to the analysis results of logistic function, the peak incidence periods for DPR with the DSP at TP and JBP were calculated as 17.85 d and 12.30 d, and the peak incidence periods for DI were calculated as 14.13 d and 12.96 d, respectively. Application of 8% thifluzamide·azoxystrobin after transplanting for seven days provided obvious control efficacy on RSB, and the peak values of DPR and DI were 12.69% and 6.91, the DPR and DI in disease stopping period were 6.67% and 4.02, and the peak incidence periods for DPR and DI of Logistic function were calculated as 11.50 d and 17.43 d, respectively. Application of 240 g/L thifluzamide SC when the diseased hole rate reached 20% and at the rupturing period provided weak control effect after the first application, and the peak values of DPR and DI were 44.59% and 12.00, the DPR and DI in disease stopping period were 11.33% and 3.78, the peak incidence periods for DPR and DI of logistic function were calculated as 23.78 d and 21.94 d, respectively, and the second application at the rupturing period was needed for effectively control on RSB. In conclusion, the early or late DSP has little effect on the final occurring degree of RSB under the same conditions of year and region, and the application 8% thifluzamide·azoxystrobin before the DSP of RSB provides excellent control efficacy, and the optimum control period of RSB can be shifted earlier.

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相似文献/References:

[1]易红娟,王节萍,孙雪梅,等.江苏沿江稻区水稻纹枯病病情扩展时间动态模型[J].江苏农业学报,2016,(06):1256.[doi:doi:10.3969/j.issn.1000-4440.2016.06.010]
　YI Hong-juan,WANG Jie-ping,SUN Xue-mei,et al.Studies on the dynamic models of rice sheath blight expansion with time in riparian rice region, Jiangsu province[J].,2016,(01):1256.[doi:doi:10.3969/j.issn.1000-4440.2016.06.010]

备注/Memo

备注/Memo:
收稿日期：2019-07-07基金项目：江苏省农业三新工程项目[JATS(2019)329]; 江苏省农业科技自主创新基金项目[CX(18)1003]; 江苏省重点研发计划（现代农业）项目（BE2017366-03）; 现代农业重点及面上项目(SBE2018310278)；江苏省第五期“333”工程项目（BRA2019314）;江苏省“六大人才高峰”高层次人才项目（NY-088）作者简介：朱凤(1979-),女,江苏宝应人,推广研究员,主要从事水稻病虫害测报及防治指导工作。(E-mail) 59649
更新日期/Last Update: 2020-03-13