Recently, the readers of Shandong Pingdu, Zibo, and Jiyang came to the phone to report that they discovered that some of the greenery they planted had turned red in the past few days, and some had also appeared leafy leaves. In particular, the Yonglian Peach planted in August and September last year was particularly serious. In response to this phenomenon, some people say that phosphorus is caused by phosphorus deficiency. Some people say that it is due to spider mite damage. However, the fruit grower also made up the phosphorus and sprayed the drug to control the spider mites. However, the phenomenon of the red leaf not only failed to resolve but was even worse. In fact, this phenomenon reflected by Tao Nong is a fungal disease of peach, namely peach tree leaf disease. The disease is a common disease of peach trees in spring. Besides harming peach trees, it can also harm peaches, cherries, apricots and plums. Peach tree leaf thinning has a great impact on the normal growth and development of peach trees. In severe cases, 90% of the young leaves, young shoots and more than 60% of the young fruits of the whole tree will be damaged, which not only reduces the output, quality and efficiency of the year, but also Severely weakening the tree vigor and affecting the output of the following year. The incidence of peach tree leaf shredding usually begins in early April and is the peak period in May. Peach trees that have been newly planted for less than three years are particularly severe. After many years of observation, the author has observed that one of the main reasons for the height of the onset in April and May is that the peach buds are inflating and spreading during the spring of April. At this time, the peach leaves are young and susceptible to infection by the bacteria. To the low temperature of 10 °C -16 °C, coupled with cold and humid and rainy weather, it will cause the epidemic. The disease is mainly harmful to the leaves of peach trees, and it also harms young shoots and young fruit in severe cases. In early years, young leaves just curled out from the bud scales. The most typical symptom is the red color of the leaves. With the increase of the leaves, the diseased part also increases, and the red color increases. Become thicker and brittle. Over time, the diseased department changed from red to yellow-white or silver-white powder, which was the ascostic shell of the bacteria and eventually became dark brown, and the coke fell off. The occurrence of peach leaf shingle has a close relationship with the climate in early spring. In early spring, the temperature is low, and there is more rain and more rain. The air is wet and the incidence is heavy and heavy. On the contrary, the incidence is mild or not. In the autumn from late August to late September, if the climate is similar to the early spring, it will also happen slightly. For the prevention and control of the disease, many growers reported poor governance. The main reason was that the fruit growers did not catch the disease's incidence and missed the best period of prevention and treatment. The disease should be mainly prevention and control. Many years of practice have proved that when the peach buds begin to sprout and the scales want to open without opening, a 150-200-fold equivalent Bordeaux mixture is sprayed for a prophylactic effect. According to our understanding, in the past few years, some farmers only knew that the benefits of planting peach trees were good, but they lacked experience in the management of peach trees, and especially ignored the winter management of peach trees. Practice has proved that if it can be done in mid-December to 1 In the first half of the month, the combination of 3-5 Baume degree lime sulfur sprays with Qing Yuan and 40 days later spraying Bordeaux mixture will have better control effect. Peach trees that have already been attacked should be promptly removed from the diseased leaves and burned in a timely manner. Peach should be supplemented with a fertilizer once in a timely manner to supplement nutrients in order to promote rapid restoration of tree vigor. For severe onset, foliar application of 70% thiophanate-methyl 800 times or 80% mancozeb 600 times control. Professional aging products are based on "knowing the old and understanding the old". The design of aging products should meet the real needs of the elderly, facilitate the care needs of nursing staff, and adapt to the home-based elderly care environment.
Third, the chair should have some weight, and 3-4 kg is the best. If it is too light, it is difficult to maintain certain stability and easy to slip. The chair material should not be too soft.
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The characteristics of the elderly are aging of the lumbar spine, discomfort of the cervical spine, osteoporosis, and fatigue. Therefore, it is particularly important for the elderly to protect the waist and neck to delay the aging rate and reduce the incidence of diseases and accidents.
First, the backrest of the Chair is large and strong, and it is equipped with armrests, so that the waist of the old man is close to the back of the chair and can support the head and shoulders of the old man.
Second, the height of the chair should be at the same level as the knee, that is, when the old man is sitting, his feet can be placed flat on the ground. At the same time, the length of the chair seat should be the same as the length of the old man's hip to knee, so that the knee joint can be maintained at about 90 degrees, and the ankle joint can be in a natural drooping rest state.