Pu Shu is a cold-tolerant tree species, and it can survive the winter at a low temperature of about minus 10 degrees in winter.

Pu Shu replication method

sow seeds

Planting in Pu Shu is usually based on sowing and reproduction. Pu Shu seeds generally mature in September. After harvesting, the seeds should be scrubbed and stored in the shade. In March and April of the following year, separate beds should be planted. Before sowing, water should be poured on the soles of your feet, and then the previous seeds should be washed and buried in the soil. Sowing should not be too deep, and 1.5 ~ 2 cm is appropriate. When raising seedlings, it is necessary to cover the soil surface with plastic film to keep the soil at an appropriate temperature and humidity. Generally, seedlings can be cultivated in about 65,438+00 days. After the emergence of seedlings in Pu Shu, it is necessary to uncover the plastic film, pull out seedlings, weed and fertilize. During the cultivation period, attention should be paid to shaping and pruning Pu Shu saplings to make their branches straight and their crowns even and beautiful. When transplanting big seedlings, bring soil to prevent them from dying due to lack of water. In the process of cultivation, we should pay attention to the main pests such as cotton aphid and psyllid, and do a good job in pest control.

Cutting propagation method

Select the semi-lignified upper branches of the annual branches of the mother tree and cut them into cuttings with the length of 18 ~ 20cm. After soaking in 200 mg/L NAA solution for 3 hours, the rooting rate was over 90%.

Cultivation techniques in Pu Shu

The cultivation process of Pu Shu generally includes three steps: pot selection, soil selection and planting. Choose pots, Pu Shu bonsai is more classical and elegant, generally using purple sand pottery pots or glazed pottery pots is appropriate. When choosing a basin shape, according to the shape of Pu Shu, it is best to choose a rectangular, square or oval basin. When choosing the color of the basin, it is appropriate to choose a pale yellow or ochre basin. Park has dense leaves, dark green leaves and rough gray bark. Choose a pale yellow or ochre basin, which can play a comparative role. As for the choice of soil, Pu Shu has strong adaptability and little requirement for soil, so it can choose fertile and loose sandy loam with good drainage. When cultivating bonsai, the pastoral soil is mixed with sand or chaff ash for soil preparation; Planting is generally carried out after autumn or before Pu Shu germinates in spring. When planting, it is necessary to trim the root system properly, subtract the long trunk, leave more lateral roots and fibrous roots, choose loose and fertile soil, and properly trim the branches and leaves. When planting, in order to prevent the root system of Pu Shu from being too deep, shallow potted plants can be used and covered with soil. When planting, the roots should be tamped, so that the roots are close to the soil to prevent the roots from festering and moldy. At the same time, water management should be done well, and Pu Shu should be sprayed with water once every morning and evening to keep the soil around the stump moist.