Brief Introduction of Lishu High Yield Cultivation Fertilization Method
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(1) Circular fertilization method: Dig a circular groove around the circumference of the crown projection, about 35 cm to 50 cm in width, and 30 cm to 40 cm in depth, and apply the fertilizer to the trench after covering the soil.
(2) Trench fertilization method: In the first year between the Lishu line, open the width of about 30 cm of the ditch, deep 30 cm to 40 cm fertilization after the cover soil. In the second year, ditching was conducted between the plants and alternate fertilization was performed every other year.
(3) Radial furrow fertilization method: In the crown, about 1 meter away from the main trunk, 6 to 8 furrows are opened outward, about 40 centimeters wide, 20 to 40 centimeters deep, and the length is to the periphery of the crown projection.
(4) Cave storage fertilizer and water method: On the basis of trimming the tree plate, combined with Shiji fertilizer in the autumn, digging 4 to 6 holes with a depth of 30 cm and a width of 35 cm at the outer edge of the near tree disk. With several critical periods when Li Shu needs fertilizer, the optimal proportion of nitrogen, phosphorus, and potassium (1:0.5:1 for nitrogen, phosphorus, and potassium) is used to top-dress four times per year.
(5) The whole garden fertilization method: Spread the manure in the whole garden, then turn it into the soil.
(6) Top-dressing (foliar application of fertilizer): The fertilizer is dissolved in water and sprayed on the leaves so that the leaves directly absorb nutrients. The types of top dressings outside the roots are mostly urea in production, and they are mainly applied in the early stage of growth, generally 2 times to 3 times per year.