(1) Arrangement of Silkworms in Jamsil
After disinfection, single-sided silkworms are placed on the surrounding walls. The room is filled with several rows of silkworms, each row being 1 meter wide. At both ends of the silkworm table, a bracket of 30 to 40 centimeters in height is set up, and a bamboo raft is placed on top of it. If the number of silkworms is large, an additional layer can be added above the first one, with each silkworm area set at approximately 15 square meters. This arrangement ensures proper space and ventilation for the silkworms to grow healthily.
(2) Mulberry Distribution
The fifth instar larvae begin feeding slightly later. On the second day, mulberry leaves are evenly spread across the silkworm tables. After 1 to 2 hours, once the silkworms have climbed onto the mulberry, the leaves are carefully picked up and arranged on both sides of the bamboo raft, forming a stable slope. To prevent the silkworms from falling off, the amount of mulberry should be gradually increased, ensuring that the slope remains secure. It’s also important to maintain clear walkways for easy operation and management.
(3) Feeding Methods
During the middle of autumn, silkworms begin to sprout new shoots, and by mid to late autumn, they require daily feeding. During periods of full feeding or in high temperatures and dry conditions, additional feedings may be necessary. After each feeding, doors and windows should be closed to prevent the mulberry leaves from drying out. Before feeding, any uneaten branches should be removed to avoid overcrowding. This helps maintain a clean and efficient feeding environment.
(4) Precautions
1. Delaying the timing of feeding can increase the silkworms’ hunger, encouraging them to eat more efficiently. When using thick, hard, leafy branches for the first time, ensure the slope remains stable. Remove the three leaves and small shoots before placing the mulberry. Branches should be densely packed, or a layer of stearin plastic mesh can be used on the slope to prevent silkworms from falling. As the silkworms move into the strip stage, the slope should be adjusted immediately.
2. Disease prevention is crucial during the fifth instar period. Fresh lime powder or anti-static powder is commonly used to eliminate silkworm flies and other pests. Before the fifth instar, the silkworms are disinfected with anti-stick powder. After they consume the mulberry leaves the next day, fresh lime powder or anti-static powder is applied again. On the second, fourth, and sixth days of the fifth instar, a 300-times diluted solution of silkworm fly spray is evenly applied to control maggot diseases. Always prepare the solution in advance and avoid using lime powder within 4 to 6 hours before or after application to maintain its effectiveness.
3. Adjust feeding practices based on local conditions. During the reduced feeding period of the fifth instar, pay attention to maintaining the slope structure. In the late feeding stage, reduce the amount of mulberry leaves and reuse lime powder. When about 1% of the silkworms are mature, add hormones between 3 to 5 pm, and collect the silkworms the next morning. Alternatively, flatten the slopes and feed the leaves again, then catch the silkworms. For inexperienced farmers, gently shaking the branches will help eggs fall and be collected. Using square grids is ideal for outdoor pre-loading, allowing faster silkworm collection and reducing indoor humidity while improving tannin levels.
4. To manage temperature during winter, adjust the number of leaves or delay cutting slightly. Generally, it's best to cut after September 20. Maintain the appropriate height when pruning, ensuring that the lower part of the cut retains 3 to 4 leaves until they naturally fall. You can also keep all the leaves on the lower part of the cut. If needed, pick leaves from the bottom up, but always leave 3 to 4 leaves, especially the first one, to avoid premature loss. If the temperature is higher in late autumn, winter buds may appear early. To prevent dry shoots, trim the germinating parts during dormancy, which helps control frost damage without affecting spring growth.
Roundness tester is a length measuring tool for measuring roundness using the rotary axis method. The roundness meter is a measuring tool for measuring the roundness error of the workpiece using the rotary axis method. Roundness tester is divided into two types: sensor rotary type and workbench rotary type. During measurement, the measured part is installed concentrically with the precision shaft system, and the precision shaft is attached with an inductive length sensor or a workbench for precise circular motion. It is composed of sensor, amplifier, filter and output device of the instrument. If the instrument is equipped with a computer, the computer is also included in the system.Roundness Tester
The principle of the roundness meter is the same as that of the coordinate measuring machine. In fact, its working principle is very simple. The coordinate measuring machine is a point acquisition tool. Its principle is to collect points first, and then form a line from points, and then form a three-dimensional model from lines. CMM is a kind of measuring equipment that has a guiding mechanism, a length measuring element, a digital display device in three mutually perpendicular directions, and a worktable that can place the workpiece (not necessarily large or huge). The measuring head can be moved to the measured point easily by manual or motorized means, and the coordinate value of the measured point is displayed by the reading device and the digital display device. Obviously, this is the simplest and most primitive measuring machine. With this measuring machine, the coordinate value of any point in the measured volume can be displayed through the reading device and digital display device.
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