In the cultivation and production of fruit trees, it's crucial to understand the environmental needs of the surrounding "ecological forests." If we fail to do so and proceed with blind planting, fruit trees may spread through nearby forest sources, leading to an increase in pests and diseases. Therefore, when developing fruit tree industries, it's important to avoid planting certain species that act as carriers of harmful pests and pathogens.
Artichokes, also known as hedgehogs, grow quickly and have good wood quality, but they should not be planted near orchards. This is because artichokes attract pests like cockroaches, which can damage fruit trees. Grasshoppers are common pests in both forest fruits and crops, causing leaf discoloration, wilting, and even fruit deformation, significantly reducing yield and product quality. Additionally, artichokes serve as a wintering site for anthracnose fungi affecting Rosaceae plants such as apple and pear trees. Planting them near these trees can lead to the spread of anthrax and serious damage.
Pine pollen can harm pear trees located up to two or three hundred meters away, causing leaf spotting, curling, and even fruit deformity. This reduces fruiting rates and seriously affects the quality and yield of pears. As a result, when planning pear orchards, they should be located at least 500 meters away from pine forests.
Paulownia, a fast-growing economic tree, is a primary host for the root pathogen causing purple stripe disease in fruit trees. Planting Paulownia within orchards promotes the spread of this disease, which can affect seedlings, saplings, and mature trees. Mild cases result in poor growth, yellowing leaves, and premature leaf drop, while severe infections cause branch dieback and eventual plant death, leading to significant losses in fruit production.
In China, there are many types of cypress trees, including Sabina chinensis, Platycladus orientalis, and others. There's a saying in forestry: "Pear and cypress are like crickets; they must be kept apart." This is because the fungus causing pear rust needs to move between pear trees and cypress to survive the winter, continuing to infect pear trees the following year.
Eucalyptus, another economically important tree, releases organic compounds through its roots that are highly toxic to grapevines. Grapes are extremely sensitive to these substances, and exposure can cause root rot and plant death. Studies show that even a few meters of distance between eucalyptus and grapevines can still lead to negative effects, making careful placement essential in agricultural planning.
Knee Joint
Total knee replacement is for patients with severe pain and/or severe joint disability due to osteoarthritis, post-traumatic arthritis, rheumatoid arthritis, or previous implant failure.
The total knee joint system consists of femoral condylar , tibial tray,tibial insert and patella.The femoral condylar and tibia tray are made of Co-Cr-Mo in accordance with the quality standards.Tibial insert and patella are made of UHMWPE containing PBHP antioxidants.
The revision knee system is suitable for cemented total knee replacement in patients with severe joint pain or severe disability due to osteoarthritis, post-traumatic arthritis, or rheumatoid arthritis, moderate knee varus, varus, or flexion deformity of the knee, avascular necrosis of the femoral condyle, previous failed knee replacement, osteotomy, or other knee surgery.
Total knee arthroplasty (TKA) is a practical and effective method for the treatment of serious knee arthropathy. However, attention should be paid to the selection of indications, the correction of joint internal and external inversion and flexion deformity, and the correct placement of tibial prosthesis to reduce the loosening of tibial prosthesis. At the same time, early functional exercise should be carried out to reduce postoperative complications. Total knee arthroplasty (TKR) provides an effective treatment for patients with severe knee arthrosis.
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