During the winter period, when pear trees enter into dormancy, their growth activities are very weak. The following five management tasks must be done: After the harvest of the clear garden fruit, the remaining dead branches, fallen leaves, rotten fruit, and weeds have become places where many germs and pests have hidden in winter. Therefore, it should be thoroughly cleaned during this time, concentrated burning or high-temperature composting in the orchard. There are many pests of pears that plunge in the soil for wintering, such as pear fruit borer, pear worm, and pear gnat mosquito. For this purpose, the soil in the tree tray is turned over one by one, 25-35 cm deep, and the whole garden is plowed. The pests that have passed the winter in the soil are turned out of the ground to be frozen or eaten by birds, and pests on the surface or topsoil can also be plunged into the depths of the underground soil to suffocate them. It is not only beneficial to improve the physical and chemical properties of soil, but also helps kill pests and diseases that overwinter in the soil. Garden soil 11 meters away from the canopy, all winter deep 1-1.5 feet deep, frozen in the soil wintering pests and weeds, seeds, and prevent soil consolidation. Excavate pests and eggs in overwintering orchards and disinfect lime in time. After one year's growth, the pruned fruit trees are liable to cause tree-like disorders. In order to form a good canopy structure and achieve high quality and stable production, the pruning in the mid-December to January in winter is best. Its purpose is to distribute the trunks and trees in the tree body up and down, left and right, inside and outside, evenly distributed, balanced, and not shackled each other. It is beneficial to form a tree structure with early knot, high yield, and stable yield. Plastic surgery method: After the first and second year of colonization, dry sticks (general 2-3), third and fourth years sticking groups, fruiting sticks, etc.; first and second year after planting, all leave 50 cm high shear piles, For the branches below 40 cm, all buds are cut off, and each year grows to form a trunk with a height of 40-50 cm. In the second and third years, branches with a height of more than 40 cm are selected, and 3-4 in different heights in different directions are selected. As the backbone branches, all the Others were sparsely cut off, and then each branch was left with a 30-50 cm short cut. For the third or fourth year, 3-5 result parent branches were cultivated on each main branch and the results were tested. In this way, a fruit tree with three piles is cut to form a naturally happy tree that can be produced prematurely and productively when it is dry, and a natural round-headed tree is formed when the tree is not cut. Pruning method: topping, sparse cutting, short cutting, light cutting, tipping, pulling branches, twisting branches and so on. Generally, in the fruit tree during the shaping period, pruning is mainly carried out during the growth period of the shoots in the spring and before the lignification. The early stage is mainly for picking, short cutting, and tipping, and the main stage is short cut and flat pulling to promote early flowering. Early fruits; the formal result tree is dominated by winter and summer cuts; in the winter, dry branches, diseased shoots, twisted branches, leggy branches, and dense clumps are mainly cut. Mother-branch-based, balanced vegetative growth and reproductive growth, promote high yield, stable production. The prevention and control of pests and orchards in the successive years of production process, more or less will be infected with pests and diseases, early winter insecticidal sterilization, we must be based on prevention, prevention and control of integration, so that fruit trees are not affected by pests and diseases, and promote fruit trees thrive. After harvesting, the canopy is sprayed with 10-12 times liquid pineine mixture. After a half month, the spray is sprayed once with 1-1.2 Baume's lime sulfur or ferrous sulfate: quicklime: water = 3:3:100 When spraying, spray finely, spray evenly, with the spray; it is worth noting that rain can not be sprayed, wind can not be sprayed, sooner or later can not spray when there is dew, high temperature weather can not spray; otherwise, easy to make fruit trees Produce phytotoxicity or reduce efficacy; it is best to spray at 8-10 am and after 3:00 pm; fruit trees with older trees, skins, and cracks should be peeled. Fertilization is carried out from mid-December to early January, with an average of 25 kg of fecal water in the winter fruit crops, 5-7.5 kg of soybean cake and 2.5-5 kg ​​of superphosphate; the first fruit tree is applied in two-thirds of the amount, 1- Two-year-old plant manure water 2.5-5 kg. The method is to open a 1-1.5-foot deep ditch under the canopy drip line. After the liquid is infiltrated, cover the fine soil; in case of drought, the leaves will appear wilting and should be filled once every 5-10 days. It depends on the size and degree of drought, and it is usually appropriate to penetrate the inner layer of the crown.
The reflex hammer is used for testing reflexes in regards to an orientating neurological examination. Testing of the individual reflexes can help provide conclusions as to nerve damage on the spinal cord. Depending on specification, a reflex hammer can also contain other neurological diagnostic instruments, such as brushes or needles. In addition to the reflex hammer, there is also a percussion hammer, which is used to asses organs via resonance waves.
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