Summer and autumn are the rapid growth period of jujube trees. In the event of rain, they can easily accelerate the infection of pathogens, cause various diseases, lead to early defoliation, and destroy the robust growth of trees, which is extremely harmful.
Low-lying land, irrigated land and intercropping corn and other high-stem crops of Zaoyuanzao rust (leaf disease) occur relatively heavy, and accompanied by a large number of fallen leaves, in sandy soil and intercropping peanuts and other low-stem crops park is relatively light. The area with more rainfall this year has provided favorable conditions for the occurrence of rust in jujube and should be given attention to as early as possible. If there are yellow spots on the back of the leaves, it is the urea spores of date rust. It must be sprayed with 800 times of new high-fat film in time.
During the control of defoliation, don't throw gardens and people can't shuttle between gardens. Because the breeding of defoliating bacteria is based on the humidity, the appropriate temperature and humidity, it will increase the reproduction of germs and the spread of germs. Wind-borne media and staff work in the field, driving the spread of germs. Therefore, in the prevention and control of defoliation, a slight oversight would have devastating consequences.
In addition, spider mite disease, drought, excessive excision, multiple girdling, etc. can cause defoliation of jujube trees, which needs attention. In addition to reasonable pruning, light introduction, and enhancement of the whole park's ventilation, light and timely supplement of tree nutrition. In addition, (adhering to dry with high-quality amino acids every 10 days) should prevent the occurrence of early defoliation as early as possible to ensure the robust growth of jujube trees.
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