1, the degree of pruning can be divided into three types: high shearing, medium shearing and low shearing, and some people call it weak shearing, medium shearing and strong shearing. High shear is to cut the stalks to a height of 75 to 120 cm, medium shear is to cut the stalks to a height of 30 to 45 cm, and low shear is to cut the stalks to a height of 15 to 30 cm. Others distinguish it by the remaining number of bud eyes. Because the pitch of each Sophora japonica is different, it is not enough to look at the height alone, and pruning according to the number of bud eyes is more accurate. Taking the bud eye as the standard, the high cut 15 ~ 20 bud eyes, the middle cut 6 ~ 8 bud eyes, and the low cut 2 ~ 3 bud eyes. There are many species of Sophora japonica, with different habits, different soil, climatic conditions and water and fertilizer management, so the growth of the same species of Sophora japonica is also very different. The above is only the degree of pruning in concept. Generally speaking, those who grow well use high cutting and those who grow poorly use low cutting; Use high shear for well-growing branches and low shear for poorly-growing branches.

2. Pruning technology requires a set of good tools to be prepared first, which can not only speed up pruning, reduce labor intensity, but also make the incision smooth and heal well. Otherwise, the incision is rough and broken, the healing is poor, and it is easy to be infected with pests and diseases.