The role and method of autumn application of base fertilizer for cherry trees
Large cherries bloom in spring and fruit in summer. Recently, many cherry growers have called to ask about management techniques after cherry flowering. In response, the reporter visited Zhang Zhicheng, a miscellaneous fruit expert at Northwest A&F University. Zhang Zhicheng reminds farmers that large cherries mature successively more than 30 days after flowering, and they are currently in the critical period of technical management from after flowering to fruit maturation...
1. The role of autumn application of base fertilizer Increase tree reserves to supply the nutrients needed for spring sprouting and flowering. The earlier the fertilization time, the better. Generally, it is applied in September-October, which is beneficial for the healing of broken roots, improves the absorption capacity of the root system, increases the tree's reserve amount, plumps the flower buds, and enhances the tree's cold resistance.
2. Application rate of base fertilizer
1. Autumn application of base fertilizer for cherries accounts for 70% of the annual application rate.
2. Young trees to trees just beginning to bear fruit are generally given about 50 kg of human excrement and urine per tree or about 100 kg of barnyard manure.
3. Trees in full fruiting period are given 80 kg of human excrement and urine per tree or about 4000 kg of barnyard manure per mu.
3. Methods of applying base fertilizer
Base fertilizer should be applied deeply; application methods include ring-shaped trenches and radial trenches; the ring-shaped trench application method mainly involves digging a ring trench about 50 cm wide and 50-60 cm deep at the drip line around the outer edge of the tree canopy, mixing organic fertilizer evenly with the surface fertile soil, and applying it in.