论文部分内容阅读
由于草莓苗期病害的控制难度大,农药品种难选择,往往造成病害大发生。预防和控制草莓真菌病,既要有对路农药,还要有科学的施用技术,才能达到事半功倍的效果。在草莓苗期和移栽期,主要以白粉病、灰霉病、炭疽病发生最为普遍,如果防治不及时,常会使草莓苗全部被毁。一、草莓白粉病。其病原菌为单囊壳属,可以在多种作物上发生为害,发病初期,病斑成白色粉状,随着气候温度的提高,病情发生加重,天气干旱更会加重发生,病菌借助气流或雨水扩散传播,侵染植株最适温为15℃~25℃,发病最适温为25℃~30℃。潜伏期5~10天。草莓开始坐果到采收均易发病,但
Due to the difficulty of strawberry seedling disease control, difficult to choose pesticide varieties, often resulting in disease occurred. To prevent and control strawberry fungal diseases, it is necessary to have pesticides on the road, but also to have scientific application techniques in order to achieve a multiplier effect. Strawberry seedling and transplanting, the main powdery mildew, gray mold disease, anthrax occurs the most common, if the control is not timely, often make strawberry seedlings were destroyed. First, strawberry powdery mildew. The pathogen is a simple capsule genus, can occur in a variety of crops damage, the early onset of lesions into a white powder, with the increase of climate temperature, the disease aggravated, the weather will be aggravated by drought, bacteria by means of airflow or rain Diffusion and spread, the optimum temperature of infected plants is 15 ℃ ~ 25 ℃, the optimum temperature for onset is 25 ℃ ~ 30 ℃. Incubation period of 5 to 10 days. Strawberry began to take fruit to harvest are susceptible, but