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Heavy snow damage to bayberry and its nursing measures
At the end of 2004, heavy snow fell in our province, and there were heavy snowfalls in some areas, causing harm to crops in our province. Especially the bayberry that grows in the mountainous area has a greater risk of heavy snowfall. In order to reduce the loss of Yangmei in our province next year, the majority of Meinong should provide timely care to Yangmeishu. First, the damage caused by snow on bayberry Yangmei branches dense leaves, canopy closure very easy to snow, branches are vulnerable to crispy snow pressure, in particular, the shallow layer of soil is often rooted and uprooted or lodging. Although this heavy snow can kill part of the overwintering pests and pathogens in Yangmeiyuan, and reduce the damage caused by spring diseases and insect pests, it is caused by frost and melting during the snowmelt period after heavy snowfall. For example, in 1991 in Cixi and Yuyao of Zhejiang Province, the dried branches of Myrica rubra were broken due to the snowfall of the tree crown, and uprooted production loss was about 10%. During the winter of 1998 in Zhangzhou, the snow was collected from 8 to 9 years old Yangmei tree in Jixian County. There was about 1/3 of the plants damaged, and some of the main branches were broken from the main junction and destroyed. The loss was serious. Although Yangmei of our province is a big year next year, the loss of production is not a big problem, but the damage of the tree will be Yangmei's life. Therefore, we must pay enough attention to it. Second, care measures 1, before the next snowfall, the establishment of pillars of bayberry, especially the excessive amount of branches outside the crown should be trimmed in advance. In places where there is often snow damage, we must adopt natural, happy-shape pruning methods so that branches are sparsely distributed to facilitate the accumulation of snow and reduce snow damage. 2. When the snow falls, regardless of whether the snow has stopped, once snow is found on the canopy, it is necessary to tighten the snow or use bamboo rafts to knock down the canopy of the snow to reduce the amount of snow on the canopy. 3. After snowfall, the snow on the red bayberry trees should be shaken off as soon as possible to avoid breakage of branches. In order to deal with broken branches in time, the broken branches should be sawed, cut, and cut as soon as possible. In order to prevent decay, the branches that have not been broken should not be easily sawed off. They should be lifted with ropes or supported by pillars, restored to their original shape, and wounded at the wounded area to be bonded with wax to promote healing and restore growth. . 4. It is necessary to strengthen the treatment of bayberry after snow damage. After the snow damages, the trees are weakened. Fertilizer should be applied in time to restore the tree vigor. At the same time, the trees' wounds are more likely to cause diseases and insect pests. Attention should be paid to timely prevention and treatment.