Rapid Seedling raising technique of Broussonetia mandshurica cutting

Rapid Seedling raising technique of Broussonetia mandshurica cutting

Brother Wang also name: Jiuxin vegetable, Shanghuangpi, Nanling cottonflower, cotton root, pomegranate, hemp, fire wood, valley hemp. Morphological features: shrubs, 30cm to 100cm high. Branches reddish brown, glabrous. Leaves opposite, long elliptic, apex obtuse or acute, base cuneate, entire, petiole short or few absent. Yellowish green flowers bloom from February to June, several form a terminal short raceme, with a total pedicel of 5 mm 10 mm and a pedicel 1 mm long. Calyx tubular, stamens 8, disk scales 4. The ovary is elliptic, the stigma is subglobose and the style is very short. From August to September, drupe ovate, about 6 mm long, dark red to purplish black when ripe. Stems and leaves can be used as medicine at any time. Growth environment: distributed in Guangxi, Guangdong, Fujian, Jiangxi, Zhejiang, Hunan, Sichuan. Born in damp thickets at the foot of the mountain and on the hillside. Sexual flavor function: hard taste, cold nature, toxic. Clearing heat and detoxification, relieving swelling and dispersing knots, relieving pain. [Jishan Huayao]

First, a cultivation method for cutting and rapid propagation of Broussonetia mandshurica is provided, which is characterized in that the technological steps are as follows: step 1, collecting the seeds of the mother tree as seedling seeds; step 2, disinfecting / cleaning the seedling seeds in time; step 3, sowing the sterilized / washed seedlings in the seedbed in time, cultivating the king seedlings, and making the seedlings grow into seedlings in the original cultivation area. Step 4, select the above-mentioned 5-year-old king tree seedlings as the mother seedlings, select the living branches of the adult king trees to be truncated to make cuttings, each cuttings have at least buds on the cuttings, and then cut the cuttings on the mother seedlings for propagation; step 5, cultivate and manage the mother seedlings and cuttings.

two。 In order to effectively prolong the life of the seed and ensure the high germination rate of the seedling seed, in step 1 above, the method of collecting the seedling seed is as follows: the mother tree with exuberant growth and long age is selected. During September, the fruit of the mother tree will form a nuclear egg, and the color will be harvested from dark red to purple and black with fruit branches, and the recovered fruit branches will be dried in the shade of ventilation. The obtained seeds were sown or disinfected / cleaned and sowed in time within 6 days. In step 3 above, the sterilized or washed seedling seeds should be sowed in the seedling bed in time within 2 days; the preferred scheme is that the sterilized or washed seedling seeds should be sowed in the seedling bed within 23 hours.

In order to ensure the survival rate, the king nursery seeds sown in the seedling bed were planted in the seedling bed. Before germination, the growth environment conditions were sunshade rate 78%, relative humidity 68%, and temperature 19 ℃. In the early growth environment after seedling germination, the shading rate was adjusted to 68%, the relative humidity was adjusted to 68%, and the temperature was unchanged; the growth environment in the later stage of the seedling, the shading rate was 29%, and the temperature and humidity were cultivated under natural conditions. The preferred scheme is: before the seeds germinate, the growth environment is that the sunshade rate is 88%, the relative humidity is 86%, and the temperature is 23 ℃; the seedlings can germinate 9 days after sowing, and 12 days after the seedlings, the shading rate is changed to 73%, the humidity will be 73%, and the temperature will remain the same; in the later stage of the seedlings, the shading rate is 39%, and the temperature and humidity are cultivated under natural conditions.

In step 4 above, the living branches mentioned above are selected as healthy, pest-free, current-year-old twigs or perennial old branches. In order to further improve its survival rate and quality, the preferred scheme is to select the living branches of the above-mentioned mother tree. After the living branch is truncated into a 2 cm long cuttings with at least 2 buds, the lower cut end of the cuttings is trimmed into oblique plugs or sharp wedge plugs that are easy to insert.

The above-mentioned mother seedlings are generally selected as one-year-old fine elder brother king seedlings. When inserting, a small opening is scraped in the phloem of the trunk near the ground, and then the lower cutting end of the cuttings is cut on the cuttings, and the cuttings are reliably inserted on the seedlings of the king tree by binding or other fixed methods to propagate. And the above cuttings can be without leaf cuttings, or with leaf cuttings, if there are leaves, remove part of the leaves, retain only three leaves near the upper end of the cuttings, and cut off the leaf 1max 3 to reduce the volatilization of leaves to water.

The cultivated seedlings not only have high survival rate, can grow rapidly, but also have strong stability, which can realize the intensive management and efficient production of artificial cultivation, meet the market demand and promote the development of high-quality industry. Because the technique also uses the soil that has nurtured the mother tree as the soil of the nursery bed, the survival rate is improved. The mountain has become ripe land with strong adaptability, which is more conducive to the growth conditions and production development of GE Wang.