There are many important apple producing areas in China. The apples produced in these areas are of good quality and good taste, and are deeply loved by consumers. However, in the process of apple production, apple spotted leaf disease is harmful to the growth of apple trees. Through analysis, it can be known that the occurrence of apple leaf spotted leaf disease is not only related to the quality of seedlings itself, but also an important factor is the apple orchard. The spores caused by the disease, so to prevent the occurrence of apple leaf spot defoliation, the harm of this apple disease to a minimum, we should also use the spore catcher to do a good job in forecasting and carry out scientific and effective disease prevention.
In general, there are four methods for the prevention and control of apple leaf spot defoliation. The first is strict recommendations, as far as possible from the ward to introduce seedlings and scion. The second is to strictly clean the garden. In autumn and winter, the fallen leaves are carefully removed, the diseased branches are cut off, and the burning is concentrated. The third is the use of spore capture instrument for the capture of orchard spores, do a good job of forecasting, after the capture of the spore capture device, the technician will take the slide to check the microscope, when the first spot is found, that should fight drug control . The fourth is the chemical control. Generally speaking, spore traps are used to monitor the spores in the field. Therefore, when the pesticides are controlled, they will be more targeted. The types and dosages of the drugs will be more scientific, and the control effect will be even better. Well, it can effectively reduce Apple's pesticide residues.
In short, the prevention and treatment of apple leaf spot defoliation should implement the principle of “prevention-oriented, comprehensive treatmentâ€. Therefore, in combination with the application of spore capture instrument, it can meet the requirements of modern green plant protection and conduct work in a healthier and more efficient form of plant protection. Depending on local conditions, we should rationally use chemical pesticides, biological control, and physical control measures to economically, safely, and effectively control pests and diseases so as to achieve the purpose of improving production and quality and protecting the environment and people's health.
A hoist is a device used for lifting or lowering a load by means of a Drum or lift-wheel around which rope or Chain wraps. It may be manually operated, electrically or pneumatically driven and may use chain, fiber or Wire Rope as its lifting medium.
The basic hoist has two important characteristics to define it: Lifting medium and power type. The lifting medium is either wire rope, wrapped around a drum, or load-chain, raised by a pulley with a special profile to engage the chain. The power can be provided by different means. Common means are hydraulics, electrical and air driven motors. Both the wire rope hoist and chain hoist have been in common use since the 1800s, however mass production of an electric hoist did not start until the early 1900s and was first adapted by Germany. A hoist can be built as one integral-package unit, designed for cost-effective purchasing and moderate use, or it can be built as a built-up custom unit, designed for durability and performance. The built-up hoist will be much more expensive, but will also be easier to repair and more durable. Package units were once regarded as being designed for light to moderate usage, but since the 60s this has changed. Built-up units are designed for heavy to severe service, but over the years that market has decreased in size since the advent of the more durable packaged hoist. A machine shop or fabricating shop will use an integral-package hoist, while a Steel Mill or NASA would use a built-up unit to meet durability, performance, and repairability requirements. NASA has also seen a change in the use of package hoists. The NASA Astronaut training pool, for example, utilizes cranes with packaged hoists.
Hoist/Hoisting Mechanism,Hoisting Mechanisms,Hoist Mechanism,Hoist Motor
Eurocrane (China) Co., Ltd. , https://www.eurocranegroup.com