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农学学报 ›› 2017, Vol. 7 ›› Issue (4): 10-14.doi: 10.11923/j.issn.2095-4050.cjas16120026

• 植物保护 • 上一篇    下一篇

柑橘黄龙病老龄果园发病力与时序发生规律研究

余继华,杨晓,汪恩国,张敏荣,卢璐,陶建   

  1. 浙江省台州市黄岩区植物检疫站,浙江省台州市黄岩区植物检疫站,浙江省临海市植物保护站,浙江省台州市黄岩区植物检疫站,浙江省台州市黄岩区植物检疫站,浙江省台州市黄岩区植物检疫站
  • 收稿日期:2016-12-26 修回日期:2017-01-16 接受日期:2017-02-25 出版日期:2017-04-26 发布日期:2017-04-26
  • 通讯作者: 汪恩国 E-mail:yo5428
  • 基金资助:
    :农业部公益性行业(农业)科研专项经费项目“柑橘黄龙病和溃疡病综合防控技术研究与示范”(201003067);科技部星火计划立项“健身栽 培减轻柑橘黄龙病发生技术推广”(2013571);浙江省科技计划项目“柑橘黄龙病监测与防控策略研究”(2004C32087)。

Citrus Liberobacter Asiaticum Morbidity and Timing Patterns in Old Orchards

杨晓,汪恩国,, and   

  • Received:2016-12-26 Revised:2017-01-16 Accepted:2017-02-25 Online:2017-04-26 Published:2017-04-26

摘要: 为揭示柑橘黄龙病自然感染年序病情发生规律,以提高监测预警防控水平提供科学依据,笔者于2002—2015 年在天然隔离屏障良好的一个老龄果园开展柑橘黄龙病自然感染发病危害研究,在初入侵果园采取3 个重复样地定点定株发病扩散危害系统调查。坚持14 年试验结果表明:柑橘黄龙病自然感染发病力以自然感染发病4~5 年后为最强盛,其发病力可达年新发病率10%~15%,较其初发病力增强2~3 倍;其当年新发病率消长呈“M型”曲线变化规律:第1 自然感染发病显症高峰一般为初次入侵后的第5 年前后,峰期一般为2~3 年;第2 个自然感染发病显症高峰为初次入侵后的第9 年前后,峰期一般为1~3 年,两峰之间为高位波动变化动态。老龄果园黄龙病积年发病呈Logistic 曲线上行变化轨迹,其年序数值化变化模型为Q = 85.81441 EXP( 4.0063-0.5837N )(n=14,r=0.9941**),其自然感染扩散大周期为15年(其中核心为害周期10 年左右)。运用这些变化规律,对提升老龄果园黄龙病监测预警防控具有十分重要的指导意义。

关键词: 双连双拱双膜塑料大棚, 双连双拱双膜塑料大棚, 温度场, 分布, MATLAB软件

Abstract: To reveal natural occurrence of citrus liberobacter asiaticum and provide a scientific basis for monitoring, preventing and controlling the disease, a study was made from 2002 to 2015 on natural infection morbidity in a citrus orchard with good natural isolation barrier by taking three sample plots to find out the onset and diffusion of the disease. The fourteen-year study showed that citrus liberobacter asiaticum morbidity was the most powerful four or five years after the natural infection, and reached 10% to 15% yearly, which increased by two to three times compared with its early incidence force. Its varying curve of occurrence acted as an“M”. The first peak symptomatic appearance of natural infection was around the 5th year after the first incidence and the second happened 9 years later or so. Generally, the peak period lasted 1 to 3 years and the change between the two peaks fluctuated with high volatility. The occurrence regularity of citrus liberobacter asiaticum morbidity showed an upward trajectory in Logistic curve and its chronological value change model was: Q = 85.8144 1 EXP(4.0063-0.5837N ) (n=14,r=0.9941**), and its big cycle of natural infection spreading was 15 years (including core harm period of 10 years or so). This change patterns could be of guiding significance to monitoring, preventing and controlling citrus liberobacter asiaticum in old orchards.

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