1. Symptoms of damage: mainly damage the leaves, and can also harm flowers, young shoots and young fruit when serious. At the early stage of leaf disease, the young leaves immediately after germination appear red curled. With the development of the leaves, the degree of shrinkage is intensified. The leaves are uneven and the leaves are thick and crispy. They are yellow-green or yellow-green and green. . At the late stage of disease, the leaves are reddish-brown and the surface often produces a grayish white waxy powder (the ascospora layer of the pathogen). When the air in the greenhouse is wet, the diseased leaves scorch, wilting or rot, often causing early defoliation. After the leaves of the shoots die, they can cause the lower axillary buds to germinate and extract secondary shoots. Although the new leaves are no longer victimized, the shoots are not fully developed, and more clustered leaves are formed.
2. Control methods
(1) In the early stage of disease, diseased leaves should be removed in time and brought out of the greenhouse for centralized treatment.
(2) When the incidence of serious fallen leaves, fertilizer should be added in time to restore the tree vigor.
(3) In the nectarine sprouting leaf stage, in case of continuous cloudy days, it is necessary to release air in a timely manner.
(4) Before the temperature rise in the greenhouse, spray 5 ppm lime sulfur. The following agents were sprayed after the leaf spreading or early onset: 25% triadimefon 1500 times, or 70% mancozeb 500 times, or 50% carbendazim 800 times.
Mingtai X-ray Film View Lamp application areas: hospital wards, operating rooms, emergency centers, medical centers, dental clinics and other medical units
Each can be independent light and independent dimming, when overall light, there is no shadow between each. With film sensor that plug in the light on, pull off the film off
Built-in power, turn off the switch that disconnect the entire device power
view screen center brightness> 4500cd / ㎡
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Shandong Mingtai Medical Equipment Group Co., Ltd , https://www.mingtaic.com