Early spring irrigation Before the fruit trees sprout, use the large water to fill the garden, which can significantly reduce the ground temperature, delay germination and flowering, thus avoiding the freezing cold of young plants in the early spring. Main white The main whitening of the winter or early spring every year can slow down the temperature of the tree body, reduce the daily burning and freezing damage, delay the germination and flowering of the fruit trees, thus effectively avoiding the early spring frost damage, and at the same time, treating the tree diseases and insect pests. Smoked frost According to the experience of frosting of fruit trees over the years, we should pay attention to the weather forecast after the fruit trees sprout, especially at night, when the temperature drops to the critical temperature of the frozen trees, the smoke will start to smoke until the temperature rises above the freezing critical temperature. Generally, the firewood with larger smoke and slightly damp is used as raw materials, such as wheat straw, fallen leaves, sawdust, etc., or smoked with anti-frost aerosol. In order to improve the anti-frost effect, the principle of placing firewood in the upwind direction and lowering the firewood in the downwind direction is generally adopted. Generally, 4 piles to 5 piles per acre orchard are piled up, and each pile is used for about 25 kg. Watering before frost According to experience, timely irrigation is carried out 3 days to 5 days before the onset of low temperature. Before the frost, the water temperature is higher than the soil temperature. The water can increase the amount of heat in the soil. At the same time, the soil thermal conductivity can be increased after irrigation, which is beneficial to the heat transfer in the deep layer of the soil. Spraying anti-frost After the fruit tree is germinated to before flowering, spraying the agent that can improve the stress resistance of the fruit tree, and at the same time cooperating with the foliar spray fertilizer, can effectively prevent the occurrence of frost damage. Judging from the investigation and investigation, it is possible to achieve better results by spraying Baolifeng, Baode, Zhilingling 83 anti-reagent, PBD, etc. before flowering. Disclaimer: Some articles on this website are transferred from the Internet. If legal rights of third parties are involved, please inform this website. phone
The wrist joint external fixation fully considers the physiological characteristics of the wrist joint and the structural stability of the biomechanics, so that the metacarpophalangeal joint can be completely bent freely, and the tendons and ligaments of the fingers and wrists can be relatively relaxed. Moreover, the insertion method, length and stress of the bone traction needle are also considered, and the overall force of the bone traction needle is relatively uniform.
The ulna radius external fixator fractures is relatively simple, generally unilateral fixation, or simple combination fixation, generally should not fix the upper and lower radioulnar joints. Radial external fixation stenting has a good effect on the treatment of fracture. Premature removal after surgery is not appropriate, which is easy to cause dislocation and affect fracture healing. Functional exercise can be carried out gradually after four weeks of plaster external fixation, when the wrist joint function should gradually return to normal.
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