What are the key technical points for land preparation and fertilization in black locust (Robinia pseudoacacia) seedling cultivation?
The method for land preparation and fertilization in black locust seedling cultivation is: the seedling bed should undergo deep plowing and thorough harrowing, preferably deep plowing in autumn or winter, and in the following early spring, harrowing fine and level while the soil is still frozen, to a depth of 20 to 30 cm, removing stones and grass roots during harrowing. Apply 4000 to 5000 kg of decomposed barnyard manure per mu, and apply 10 to 15 kg of ferrous sulfate to control underground pests.
The method for land preparation and fertilization in black locust seedling cultivation is: the seedling bed should undergo deep plowing and thorough harrowing, preferably deep plowing in autumn or winter, and in the following early spring, harrowing fine and level while the soil is still frozen, to a depth of 20 to 30 cm, removing stones and grass roots during harrowing. Apply 4000 to 5000 kg of decomposed barnyard manure per mu, and apply 10 to 15 kg of ferrous sulfate to control underground pests.