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中国农学通报

中国农学通报 ›› 2017, Vol. 33 ›› Issue (22): 133-137.doi: 10.11924/j.issn.1000-6850.casb17010016

• 植物保护 农药 • 上一篇    下一篇

甘肃省河西走廊沙棘枝枯病发生初报

邢会琴,王治江,汪永洋,郑天翔,何艳萍   

  1. 河西学院农业与生物技术学院,河西学院农业与生物技术学院,张掖市林业科学技术推广站,河西学院农业与生物技术学院,河西学院农业与生物技术学院
  • 收稿日期:2017-01-05 修回日期:2017-07-24 接受日期:2017-02-25 出版日期:2017-08-21 发布日期:2017-08-21
  • 通讯作者: 邢会琴
  • 基金资助:
    甘肃省自然科学基金资助项目“沙棘枝枯病病原分子鉴定及遗传多样性分析”(145RJZG115)；河西学院科研创新与应用校长基金资助项 目“沙棘枝枯病及其综合防治技术研究”(xz201002)。

Occurrence and Damage of Sea-buckthorn Dieback in Hexi Corridor of Gansu Province

汪永洋, and   

  • Received:2017-01-05 Revised:2017-07-24 Accepted:2017-02-25 Online:2017-08-21 Published:2017-08-21

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摘要： 为了明确甘肃省河西走廊沙棘枝枯病的发生与为害情况，采用定点、定期观察和大面积调查相结合的方法，对河西地区沙棘上发生的枝枯病进行系统调查与分析。结果表明，该病害主要为害枝干，严重时造成枝干枯死或树体死亡。经调查，气候条件是引起该病害发生流行的主要诱因，其次是树势衰弱。通常春季气温回升早、降雨早，发病早而且严重，降雨越多，发病越严重；一般沙棘枝枯病发病适温为25℃左右，温度低于20℃和高于30℃都不利于病害的发生。新老沙棘混栽林、管理粗放、结果量大，发病严重。另外，沙棘枝枯病发生严重会造成树皮伤口多而深，为沙棘干缩病菌的侵入提供了有利途径，因此，一般沙棘枝枯病发生严重的树林干缩病发生相对也比较严重。经调查研究分析，初步确定沙棘枝枯病是沙棘树上新发生的一种枝枯病，病害的发生总体呈逐年加重的趋势。

关键词: 生态环境, 生态环境, 环境容量, 脆弱性, 重要性, 危害性评估, 云南省

Abstract: To elucidate occurrence and damage of sea-buckthorn dieback, the disease was systematically investigated and analyzed by fixed point, routine observing and large area surveying in Hexi district, Gansu Province. The results showed that branches were infected mainly by pathogen. Serious infected tree led to branches or tree dead. The main epidemic factors causing such disease were climatic conditions and the weak tree. Sea-buckthorn dieback usually happened early if temperature raised and rain fell early in Spring. The more rain fell, the more serious disease happened. Optimum temperature of sea-buckthorn dieback was about 25℃.The temperature below 20℃ or above 30℃ was against happening of the disease. The trees were infected seriously by the pathogen in the new and old sea-buckthorn mixed wood. Inefficient management and plenty of fruits were also one of main factors causing serious disease. Besides, sea-buckthorn dieback causing wounds on the bark were infected seriously by Plowvigneia hippophaeos, so sea-buckthorn shrinkage disease happening was relatively serious. It is the first report that sea-buckthorn dieback disease happened in Hexi district, Gansu Province. The incidence of sea-buckthorn dieback was higher and higher year by year.

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