Scientific formula applied enough base fertilizer. It is determined that for every 500 kg of potato produced, 1.75 to 3 kg of nitrogen, 0.9 to 1.5 kg of phosphorus pentoxide, and 4 to 6 kg of potassium oxide must be absorbed from the soil. For high-yield potatoes, balanced formula fertilization must be adhered to, and basal fertilizers account for about 70% of total fertilizer requirements. It is recommended that 2500 kilograms of rotten cooked farm manure should be applied to basal fertilizer acres, and unrotten chicken and duck manure and pig manure should not be applied, and 15 to 20 kilograms of urea, 25 to 40 kilograms of phosphate fertilizer, 20 to 25 kilograms of potassium sulfate, or a combination of corresponding contents should be avoided. fat. Farmers who have not accumulated farm manure can apply 50 to 60 kg of sulfur-containing compound fertilizer per mu, and then apply 150 to 200 kg of commercial organic fertilizer. After the seed potato emerges, it should be topdressed as soon as possible, and it should be chased 2 or 3 times depending on the condition of the seedling. In the flowering period, 0.2% Sule boron solution can be sprayed outside the root, and in the later period, 1% potassium sulfate and 0.2% -0.3% potassium dihydrogen phosphate solution can be sprayed.
Coping with deficiencies and preventing diseases. Improper fertilization during potato production can cause physiological diseases. If the nitrogen is insufficient, it will retard growth, the leaf color will fade first, and then become gray. The lower leaves will wither, the leaf area will be suppressed, the potato pieces will be small, and the yield will be low. Too much nitrogen will make the plant grow too long, the stem base is weak, susceptible to disease or lodging. If the phosphorus is insufficient, the plants are thin, the leaves are slightly curled, the carbohydrates of potato pieces are reduced, and hollows are easy to occur. The potato pieces have rusty spots and are difficult to cook. If the potassium is insufficient, the stems of the plant are dwarfed in clusters, some are curved, the internodes are short, the leaf color is dark green and then copper-colored, and some of the leaf edges are scorched, the veins are sunken, the potato is shaped into a spindle shape, and the flesh is gray. black. Such as boron deficiency, potato pieces are degraded and cracked. Therefore, according to different soil quality and fertility, the missing elements should be replenished early to prevent diseases.
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As a portable ankle protective orthosis, ankle protector is suitable for patients with frequent ankle sprain, ankle ligament injury, ankle instability, etc. It can effectively provide cushioning for the ankle during exercise, which can limit the left and right movement of the ankle, prevent sprains caused by the inversion of the ankle, reduce the pressure on the injured part of the ankle, strengthen the ankle and promote the recovery of the injured soft tissue. Moreover, it can be used with ordinary shoes without affecting walking gait.
Ankle joint injury is one of the most common sports injuries. Ankle joint injuries are more common in sports such as running, jumping or changing direction. Ankle torsion exceeds the range of motion of the individual's joint, excessive stretching and tearing of the ligaments around the ankle joint, as well as injury of the extensor digitorum muscle belly and tendon. Tendon and abdomen; The joint between tendon and bone tissue is the most vulnerable part of injury. Foot and ankle are complex mechanisms. There are many foot-attachment joints, many of which are inching joints. The weak link of foot and ankle joint is the main part of sports injury.
If the muscles, tendons and ligaments around the ankle joint have not received enough training and are in a weak state, there is a risk of injury. For example, the muscles of the lower leg may be stronger than the overall muscles of the lower leg, which may lead to the imbalance of muscle strength. Or the Achilles tendon is too tight and the front muscles are too flexible, which leads to an imbalance of flexibility. The second is the lack of warm-up and muscle stretching activities. The support belt can provide additional support and stability for weak ankle joints and injured ankle joints.
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