Cherry tree planting: why are big cherry trees dead?

Why is the big cherry tree dead? Please introduce the reasons for the death of the big cherry tree as follows: 1. The rootstock big cherry seedlings are mainly bred by grafting, and the rootstock affects the whole growth and development process of the scion variety. it directly affects its growth and development habits, early fruit, high yield, fruit size, fruit quality, stress resistance and tree life. It is very important to choose the rootstock with strong affinity to big cherry. Affinity and incompatibility is one of the causes of dead trees. Reason 2. The root respiration of cherry is exuberant under water stress, which requires high ventilation of soil. If the orchard drainage system is not perfect, after continuous rainfall, due to the accumulation of water on the tree plate, the root system of big cherry is soaked in water for a long time, and the root system is under anaerobic conditions, which inhibits the respiration of the root system, which is bound to lead to necrosis and decay, and in serious cases, it will cause dead trees. Big cherry is neither resistant to waterlogging nor drought. Under the conditions of drought, little rain and no irrigation, its growth is seriously affected, the growth of new shoots is slow, leaves wilt and change color, flower bud differentiation can not be carried out normally, resulting in weak tree potential, poor resistance to diseases and insect pests, and even the whole plant died of drought. Reason 3. Freezing injury can occur in the root neck, branches, leaves, flowers and roots of cherry. After the root neck is damaged, the bark becomes black, cracked, rough and peeling off, such as drying around for a week, which will cause the tree to die. Reason 4. Nutrition due to shallow root distribution, insufficient supply of fertilizer and water, excessive results and other reasons, it is easy to cause insufficient nutrition of the tree, especially the excessive application of paclobutrazol for many years, resulting in significant senescence of the tree, which is also the cause of tree death. Cause 5, diseases and insect pests root cancer, infectious gum disease and rot are the main diseases in cherry production, not timely control can lead to the death of the whole plant. The invasion of longicorn beetles destroyed the vegetative organs of the tree and made the tree gradually dry up and die. Measures for prevention and control of dead big cherry trees: first, select high-quality seedlings and select seedlings with good compatibility and virus-free treatment, such as ZY-1, Giselar 5, Mahari grafted cherry seedlings with good dwarfing rootstock, Giselar 5, Mahari, etc., have a high survival rate. Measure 2, dig drainage ditch, improve drainage and irrigation system combined with ridging cultivation, dig drainage ditch. The use of modern irrigation methods such as drip irrigation and infiltration irrigation can not only greatly save water, but also create a suitable soil environment for cherry to ensure the good growth and development of the tree. In mountainous areas or areas where economic conditions are relatively backward, furrow irrigation or tree disk irrigation can be used. Third, to avoid frost injury, try to choose varieties that sprout and blossom after the high incidence period of frost. In addition, sprouting and flowering can be delayed by trunk whitening and watering in early spring. Spraying methyl naphthalene acetate solution (250 mg / kg) or 0.1%-0.2% fresh vegetarian solution before sprouting could inhibit bud germination and delay flowering for 3-4 days. Through reasonable load, rational fertilization and watering, scientific pruning, comprehensive pest control and other measures to enhance the tree potential and the nutritional level of the tree, and improve the cold resistance. Fourth, strengthen the prevention and control of diseases and insect pests and use virus-free seedlings to build gardens to reduce the incidence of root cancer. The seedlings were selected before planting, the seedlings with nodules were removed thoroughly, and the seedlings were disinfected with K84; the roots of 2-3-year-old trees were irrigated with 30 times K84 before germination, and the diseased trees were thoroughly removed, then the incisions were disinfected with 100x copper sulfate solution and protected by Bordeaux solution, and the scraped diseased tissues should be cleaned and burned in time. After finding the glue flow, remove the glue eye, deep to the xylem, and apply carding agent or stone sulfur mixture. If the disease spot is large, cut a few knives longitudinally at the disease spot, extrude the juice and brush the original liquid of stone sulfur mixture, which can basically cure the glue flow. Click to get more cherry tree planting techniques click to get more fruit planting techniques