The cold dew has passed. At this time, the harvesting work of most peach species has ended. In order to restore the tree as soon as possible, the process of deciduous peach trees will be slowed down to the maximum. In order to accumulate effective nutrients for the trees before the arrival of winter, they must be serious. Do a good job in the autumn field management of peach trees, laying a solid foundation for the high quality and high yield of peach fruit next year. Recently, the reporter interviewed Han Mingyu, a professor at the College of Horticulture of Northwest A&F University, and asked him to guide the farmers on how to manage Taoyuan in the fall.
After picking the Qingyuan peach trees, the clearing garden should be carried out in time to clean up and bury the rotten fruit, diseases and insects, fallen leaves and weeds in the peach garden to eliminate the spread of pests and diseases.
After pruning peach trees, the tree potential should be adjusted in time, and the long branches that affect the growth of the lower result branches should be immediately removed; at the same time, the small branch group, the medium branch group and the large branch group should be cultivated to avoid the phenomenon of empty baldness; Peach bags and ligatures reduce the burden of stalking. In addition, the erect, long, cross branches and pests and branches of the year are trimmed in time to reduce nutrient consumption, improve ventilation and light transmission conditions, and improve leaf photosynthesis.
Han Mingyu, a pest control, said that there are two main points in the prevention and control of pests and diseases at this time. First, continue to do a good job in killing the larvae of the beetle. Once fresh worms are found, they must be resolutely eradicated. The second is to grasp the prevention and control of pests and diseases such as the moth, the pear net, and the orange fruit fly. The medicine can be mixed with 20% diflubenzuron 2000 times, 30% trichlorfon 800 times, 80% Dasheng 800 liquid mixed control. The prevention and control of Bactrocera dorsalis can be prevented several times according to the sexual attraction. It is best to add appropriate amount of brown sugar to the trichlorfon solution during the prevention and treatment, which can improve the control effect.
Topdressing Han Mingyu suggested that the topdressing should be based on livestock manure, straw and soil-mixed fertilizer, and appropriate amount of high-nitrogen, medium-phosphorus, low-potassium three-element compound fertilizer and trace elements such as iron, zinc and boron. Foliar fertilizer, such as 1% urea solution, 2% potassium dihydrogen phosphate solution, or 800 times Yongye Vitalin solution, can also be sprayed to prolong the functional period of the leaf and accumulate more nutrients. In addition, combined with top dressing, deep rooting can be carried out to break the soil compaction, increase soil permeability, promote root growth, and expose the deep-cut worms to the sun or let the birds eat to reduce the occurrence of insect pests in the coming year.
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