金鱼草锈病的症状和治疗

金鱼草锈病的症状和治疗

水草景观美化

金鱼草锈病是金鱼草生产过程中较为常见和重要的疾病之一。让我为您简单分析一下它的症状和治疗方法。1、病原体抗莱茵霉素饮食。Holw属于真菌担子菌亚门和锈菌属。2、症状该病损害茎、叶和花萼。发病初期，受害叶片和萼片出现褪绿斑和轻微凸起，然后病斑扩大形成水泡状突起，周围有黄色边缘环；茎上的病斑与叶上的病点相似，中心形成一个略微隆起的溃疡斑。病斑往往成为次生细菌的入侵通道。如果病斑被包围，植物就会枯萎死亡。当条件合适时，水泡损伤破裂并露出红棕色夏季孢子堆。3、病原体的宿主变化未知，休眠的夏季孢子通过风雨传播，然后感染金鱼草。4、流行特点：环境寒冷凉爽，气温10-17℃，昼夜温差大，形成露水有利于夏季孢子的萌发和浸渍。5、预防和控制措施1。建议在健康植物上选择插条或使用种子进行繁殖。同时，应选择一些抗锈品种进行种植。2、栽培管理中注意及时通风散热，特别是温室，降低空气湿度。特别是，避免淋水，以防止水或凝结在叶片上。如果温室内的温度白天保持在21℃以上，晚上保持在15℃以上，就可以控制锈病的发展。3、发病初期可喷洒80%代森锰锌可湿性粉剂800倍或20%三唑酮乳油1000-2000倍进行防治，效果良好

Symptoms and treatment of goldfish grass rust

Water grass landscaping

Goldfish grass rust is one of the more common and important diseases in the production process of goldfish grass. Let me make a simple analysis of its symptoms and treatment for you. 1、 The pathogen Puccinia antirrhini Diet. Holw belongs to the fungus basidiomycetes subphyla and the genus Puccinia. 2、 Symptoms The disease damages stems, leaves and calyxes. At the early stage of the disease, the affected leaves and sepals appeared chlorotic spots and slight bulges, and then the disease spots expanded to form blister-like protrusions with a yellow edge ring around; The diseased spot on the stem is similar to that on the leaf, and a slightly raised ulcer spot is formed in the center. The diseased spot often becomes the invasion channel of secondary bacteria. If the diseased spot is surrounded, the plant will wither and die. When the conditions are suitable, the blister lesion breaks and exposes the reddish-brown summer spore pile. 3、 The change of host of the pathogen is unknown, and the dormant summer spore is spread by wind and rain and then infected with goldfish grass. 4、 Epidemic characteristics: cold and cool environment with temperature of 10-17 ℃, and large temperature difference between day and night, forming dew is conducive to the germination and impregnation of summer spores. 5、 Prevention and control measures 1. It is advisable to select cuttings on healthy plants or use seeds for propagation. At the same time, some rust-resistant varieties should be selected for planting. 2. Pay attention to timely ventilation and heat dissipation in cultivation management, especially in greenhouse, to reduce air humidity. In particular, avoid drenching to prevent water or condensation on the leaves. If the temperature in the greenhouse is kept above 21 ℃ in the daytime and above 15 ℃ at night, the development of rust can be controlled. 3. At the early stage of the disease, 80% mancozeb wettable powder 800 times or 20% triadimefon emulsifiable concentrate 1000-2000 times can be sprayed for control, and the effect is good