Answer: Jujube rust is a major parasitic disease, and the jujube gardens with many cypress trees are seriously affected. Rainy, high humidity, easy to disease. In July, the summer spores germinated and invaded from the stomata in the leaves. Symptoms appeared about 10 days later, and there were fallen leaves. In the middle and late August, a large number of leaves fell off. The onset and severity of the onset of illness have a significant relationship with the rainfall, temperature, and humidity of the year. Intercropping high stem crops under the trees, poor ventilation and light transmission, early onset and heavy. The onset begins with the lower part of the canopy and the middle, and gradually expands towards the top.
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