In recent years, a number of loach breeding bases have sprung up as the demand for loach seedlings continues to heat up. However, duckweed problems during the cultivation of loach seedlings have brought a lot of trouble to farmers. In the mud loach breeding base of professional breeding cooperatives in Wuge County, Jinhua City, Zhejiang Province, the most interesting thing is that there are 2 to 3 gooses in each pond, and there are not many duckweeds in the pond.
Geese are vegetarian animals, especially like feeding duckweed and other floating plants. The presence of geese alleviates the risk of hypoxia caused by a large number of duckweed breeding. The goose can also be used as a high-quality bait to cultivate seedlings. At the same time, the geese also have the nature of catching egrets, which can greatly reduce the damage of the egret to the seedlings. This model, through the adjustment of species structure, prolongs the biological chain, interlaces and interlocks ecological niches, and stabilizes the ecosystem. The beneficial effects of mutual benefit and symbiosis are obvious.
The image measuring instrument is based on CCD digital image, relying on the powerful software capabilities of computer screen measurement technology and spatial geometry operation. After installing the special control and graphic measurement software, the computer becomes the measurement brain with the soul of the software and is the main body of the whole equipment. It can quickly read the displacement value of the optical ruler, and obtain the desired result instantly through the software module operation based on the spatial geometry; A graph is generated on the screen for the operator to compare the image with the image, so that the possible deviation of the measurement results can be identified intuitively.
Image measuring instrument is a high-precision optical image measuring instrument composed of high-resolution CCD color lens, continuous zoom objective, color display, video crosshair display, precision grating ruler, multi-function data processor, data measuring software and high-precision workbench structure.
The instrument is applicable to all application fields for the purpose of two-dimensional plane measurement. These fields include: machinery, electronics, molds, injection molding, hardware, rubber, low-voltage electrical appliances, magnetic materials, precision hardware, precision stamping, connectors, connectors, terminals, mobile phones, home appliances, computers (computers), liquid crystal television (LCD), printed circuit boards (circuit boards, PCBs), automobiles, medical devices, clocks, screws, springs, instruments, gears, cams, threads, radius templates, thread templates Wire and cable, cutter, bearing, screen, test screen, cement screen, screen plate (steel mesh, SMT template), etc.
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