In September, the fruit trees gradually entered the harvesting period. At this time, applying basal fertilizer to fruit trees is the most important and most crucial fertilization. Do not be careless and careless. First of all, the nutrients consumed during fruit sprouting from early spring to flowering and fruit setting are mainly nutrients stored in the tree in the previous year. The best period for accumulating nutrients is the period from fruit harvesting to defoliation. Autumn base fertilizer can increase the nutrient reserve of the tree body.
Secondly, autumn is the last peak of growth in the root system in one year. It has a strong vitality and strong ability to absorb nutrients. It is also conducive to delaying leaf senescence, enhancing the photosynthetic capacity of autumn leaves and increasing the nutrient reserve of the tree.
Once again, the soil temperature in autumn is still high, and the soil moisture is good, which is conducive to the activity of soil microorganisms. The applied organic fertilizer is quickly decomposed and easily absorbed and utilized by the root system. Studies have shown that fertilization in autumn can increase the nitrogen, phosphorus, potassium, calcium, and magnesium fertility by 1x, 5x, 3x, 2x, and 2x, respectively.
Finally, autumn fertilization can improve the root growth environment and improve the stress resistance of the tree. Combined with autumn fertilization and deep-turning soil, the soil structure can be optimized, and the soil permeability conditions can be improved, which will facilitate the growth of roots and respiration, and increase the ability of the soil to retain water and fertilizer and prevent overwintering. It is worth noting that: the fertilization time is generally from September to October, and the demand for nitrogen, phosphorus, and potassium nutrients in fruit trees is proportional to the demand. At the same time, organic fertilizers should be added to supplement the appropriate trace elements; the fertilization method should be fertilization. Or acupuncture points; fertilization site, in the outer edge of the crown; depth of fertilization, generally in the root distribution layer of 20-40 cm.
Therefore, many experts and professors have appealed that in the production of fruit trees, autumn basal fertilization is “goldenâ€, winter basal fertilization is “silverâ€, and spring basal fertilization is “broken-up of iron and ironâ€. Friends of the majority of farmers should fully understand the important implications. The best time to grab fertilization.
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