1, plastic. Before germination in the year of sowing, the seedlings were fixed at a height of 35-40 cm, and 3-5 buds were left under the incision 10- 15 cm to cultivate 3 main branches. Before germination in the next spring, the main branches of the first layer are cut short, and the cutting length is 80-90 cm. After germination, six lateral branches were cultured in the second layer. Before germination in the third spring, the six lateral branches were cut short, and the cutting length was 1 10- 120 cm.

2. Choose your heart. Timely coring is one of the key measures to plant mulberry. When the height of the grafted seedlings is about 35 cm, the core is removed. For mulberry seedlings that are particularly vigorous, you can pick the core, remove the strong and leave the weak. Only one axillary bud grows after nuclear removal, and multiple axillary buds should be peeled. You can pick the core again in September, and there are axillary buds to peel after picking the core. Generally, young mulberry is enucleated twice. The first time is in mid-May, when there are 6-7 leaves, remove the tender head and leave 4-5 leaves. After coring, 750- 1000 kg of base fertilizer was applied per mu, and the second time was in mid-June. In the silkworm stage, the core removal of mulberry is usually carried out during the second sleep of silkworm, and the degree of core removal is to remove small hairs, which requires that mulberry should be picked first and then used.

3. Qingyuan If the upper part of winter mulberry is not full, it should be cut off, and the top should also be cut off. Generally, the lower end leaves about 130cm, and the dwarf mulberry leaves about 100cm. Pruning should be carried out in winter, and weak branches, horizontal heads, dead piles, dead branches and dead fists should be removed in time, and centralized burning should be carried out. Rational fertilization Mulberry fertilization is mainly based on organic fertilizer and available nitrogen fertilizer, according to the principle of one base and three topdressing.