The video measuring machine 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. video measuring machine is a high-precision optical image-measuring instrument composed of a 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 applies to all application fields for 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. Manual Video Measuring Machine,Semi-automatic Vision Measuring Machine,Full-automatic Vision Measuring Machine,Gantry Type Vision Measuring Machine Zhejiang dexun instrument technology co., ltd , https://www.dexunmeasuring.com
The propagation of fruit trees through cuttings is primarily divided into two main methods: hardwood cutting and green cutting. In recent years, green branch propagation has gained increasing popularity in fruit tree cultivation. This is mainly because green cuttings are easier to root and have a higher survival rate compared to hardwood cuttings, especially for varieties that are difficult to root. Green branch propagation not only improves survival rates but also increases the propagation coefficient and allows seedlings to be ready for transplanting earlier.
The optimal time for green branch propagation is typically between July and August. During this period, the plant cells are actively dividing, which makes it easier for callus formation and rapid growth. Whether using cuttings or grafting, the branches should retain only half of their leaves. This helps maintain normal photosynthesis while reducing water loss through transpiration, thereby improving the chances of successful rooting.
There are two primary techniques for half-leaf green branch propagation. One method involves using semi-hardwood cuttings, which are sturdy, well-developed, and contain 3 to 5 buds. After cutting, the leaves are trimmed to half their original size to balance moisture and light requirements. The planting medium should be level and free of debris, with perlite often used as an ideal substrate due to its excellent aeration and resistance to soil pests. After inserting the cuttings, thorough watering ensures full contact between the cutting and the soil. Maintaining high humidity—ideally 100%—is crucial for success. Automated misting systems or greenhouse covers can help achieve this, while shading with straw huts or shade cloth prevents direct sunlight, which could harm young plants.
For hardwood cuttings, which are harder to root, green cuttings offer a better alternative. For example, cherry trees propagated using green cuttings can achieve survival rates over 80%, effectively solving issues like poor rooting and lack of budding seen in traditional hardwood methods.
Green branch grafting commonly uses the splice grafting technique, which offers a high survival rate, fast growth, and early fruiting. It is particularly suitable for fruit trees like grapes that are not easily budded. In this method, semi-woody scions are selected, containing 2 to 4 buds, with half of the leaves left intact. The grafting process is similar to that of hardwood grafting, but instead of tying directly, a plastic bag is placed over the graft union. A rope is used to secure the bag, and two small holes are punctured in it with a needle. This setup maintains warmth and moisture at the graft site, promoting healing without interfering with the leaves’ ability to perform photosynthesis. After about three weeks, the bag is removed to check the graft’s success.