"Huanglong disease, the citrus cancer, not only has no medicinal treatment, but also the diversity of its symptoms, which makes it more difficult to prevent and cure." Recently, the chief expert of the North Subtropical Economic Forest Fruit Tree Experimental Station of Northwest A&F University. Lu Zhoumin told reporters that autumn and winter will become the high incidence of Huanglong disease, but this time has been much later than the infection of Huanglong disease, affecting the timely treatment of Huanglong disease tree. Therefore, it is recommended that when you discover the symptoms of suspected Huanglongbing, you should prevent it in time to reduce losses. The gene expression of plants affected by Huanglong disease will change, and some substances attracting citrus hibiscus will be induced by pathogenic bacteria, and in order to cater to the yellowing characteristics of citrus hibiscus, the leaves will be yellowed, attracting citrus hibiscus for feeding and spawning. . At this time, because the citrus hibiscus has carried a large number of pathogens, the feeding process has led to the large-scale spread of Huanglong disease, forming a vicious circle. Studies have shown that the bacterium of the citrus hibiscus is weaker than the nymph, and the nymphs of 3-5 years old can carry the disease for life, so the prevention and treatment of huanglong disease should focus on the control of citrus nymphs. Citrus psyllids nymphs will peak during July-September, and the highest proportion of bacteria in December and January, so pay attention to these two time periods. In addition, some studies have pointed out that the high density of citrus planting will make the spread of citrus hibiscus more convenient, and the chance of citrus susceptibility will be higher; the citrus with high cultivar also shows a higher probability of susceptibility. Disclaimer: Some articles on this website are transferred from the Internet. If legal rights of third parties are involved, please inform this website. phone
Spacer and Bushing
The Spacers are
designed to hold materials a predetermined distance away from the surface they
are mounted to, or mount two items a set distance apart. Sizes and materials
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The Bushings are
used as spacers between pulleys and gears to prevent damage caused by vibration
and dynamic loads. The durable bushing material is corrosion resistant.
The
material of Spacer Bushing including carbon steel, Stainless Steel, Aluminum
and Brass. Dimensions are according to custom made. The zinc-plated finish
provides some corrosion resistance.
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