Second, the fertilization method: on the ground under the canopy with the trunk as the axis, 4-6 radial grooves are digging outward from the middle of the dry 80 cm, narrow inside and outside, shallow inside and outside, or open underground in the outer edge of the canopy 2-4 strip-shaped grooves, the depth of the groove is 20-40 cm, the width is about 40 cm, and the length is about 80 cm. If the diameter is more than 1.5 cm, try not to cut it. After the fertilizer is applied, it should be thoroughly stirred with the soil, and then watered after covering the soil.
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