In September, the fruit trees gradually entered the harvesting period. The basic basal application of fruit trees in the autumn is the most important and most important 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 higher and the soil moisture is better, which is conducive to soil microbial activity. 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 of nutrients for fruit trees for nitrogen, phosphorus, and potassium is proportional to the demand. At the same time, organic fertilizer should be added to supplement the appropriate trace elements; Or acupuncture points; fertilization site, in the outer edge of the crown; depth of fertilization, generally in the 20-40 cm root concentration distribution layer.
Therefore, many experts and professors appealed that fruit trees, autumn basal fertilization is “goldâ€, winter schistosomiasis is “silverâ€, and spring basal fertilization is “broken-over rotâ€, and the majority of fruit farmers should fully understand the important implications.
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