After the cold dew had passed, the harvesting of the vast majority of peach varieties had already ended. To restore the tree vigor as soon as possible, to minimize the defoliation process of peach trees, and to accumulate effective nutrients for the trees before winter arrived, it was necessary to earnestly Do a good job in peach field management in the autumn, and lay 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 at the Northwest A&F University, and asked him to guide how the fruit growers manage Taoyuan in the fall.
After clearing the peach trees in Qingyuan Garden, they must be cleared in time to remove the rotten fruit, diseases, insects, fallen leaves, and weeds in Taoyuan, so as to eliminate the source of pests and diseases.
After pruning the peaches, the tree vigor should be adjusted in time, and the absurd branches affecting the growth of the lower branches should be removed immediately; at the same time, the small branch group, medium branch group, and large branch group should be cultivated to avoid empty baldness; Peach bags and lashings reduce the burden on thinning. In addition, we should timely trim the erect, leggy, cross-branched and diseased shoots of the year to reduce nutrient consumption, improve ventilation and light transmission conditions, and improve photosynthesis in leaves.
Han Mingyu, pest control, said that pest control at this time has two key points. First, it continues to do a good job of killing the larvae of the longhorn larvae. Once fresh worms are found, they must be resolutely eradicated. The second is to do a good job of prevention and control of the moth, pear nettle, orange fruit fly and other pests, pesticides can be used 20% diflubenzuron 2,000 times, 30% trichlorfon 800 times, 80% of Daoxue 800 mixed solution. The control of the orange fruit fly can be controlled several times according to the conditions of sexual inducement. It is best to add appropriate amount of brown sugar in the trichlorfon solution during the prevention and control, which can improve the control effect.
Top dressing Han Mingyu suggested that the top dressing is dominated by livestock manure, straw and soil miscellaneous fertilizers, with high-nitrogen, medium-phosphorus, low-potassium three-element compound fertilizers and iron, zinc, boron and other trace elements. You can also spray foliar fertilizers, such as 1% urea solution, 2% potassium dihydrogen phosphate solution, or 800 times the Yongye biotin solution, to extend the functional period of the leaf, and accumulate more nutrition. In addition, in combination with topdressing, it is possible to deepen the root plate to remove the soil compaction, increase the permeability of the soil, promote the growth of the roots, and burn the deep-infested insects to dry or allow birds to eat so as to reduce the occurrence of insect damage in the coming year.
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