雪松的病虫害及其防治

植物图片 2021-03-26 13:44

雪松的主要病害有灰霉病、叶枯病及根腐病等，虫害则有红龟蜡蚧、介壳虫、蚜虫等危害，下面就来看一看具体的防治吧。

雪松的病害及其防治

灰霉病

该病主要危害的是雪松的当年生嫩梢和两年生小枝，可以分为嫩梢枯梢型、溃疡型和小枝枝枯型这三种类型。防治方法如下：

1、雪松适宜种植在排水和通风良好、光照充足的地方，种植时切忌过密。

2、及时剪除并销毁病枝。

3、发病时需要及时喷施苯来特可湿性粉剂1000倍液等化学药剂进行有效防治。

叶枯病

林地干旱，土壤贫瘠，病虫害和管理不当等，都可能促使叶枯病的发生。防治措施如下：

1、加强管理，增强雪松的抗病性。

2、尽可能清除病叶，减少侵染来源。

3、在子囊抱子成熟以后，喷施0.3-0.5波美度石硫合剂，或是65%可湿性代森特8倍液等化学药剂进行防治，需要喷2- 3次，每隔10-15天左右喷一次。

根腐病

发生在雪松根部，特别是新根。初期病斑为浅褐色，后逐渐转为深褐色、黑褐色，皮层组织水渍状坏死。病症严重时针叶脱落，整株死亡。防治方法如下：

1、提高栽培技术，加强管理。

2、发病时根部浇灌乙磷铝、瑞毒霉、敌克松等药剂。

雪松的虫害及其防治

雪松的虫害有红龟蜡蚧、介壳虫危害等。一般可以采取的措施如下：

1、越冬期间向枝干喷洒3－5波美度石柳合剂。

2、冬夏两季需要适当修剪植株，除去过密枝和虫枝，加强通风和透光，以抑制虫体发育。

3、虫害发生时喷杀相应化学药剂来防治。

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