Cultivation techniques of litsea cubeba

I. Propagation methods

1. Seed propagation

The main results are as follows: (1) the seeds of pheasant pepper should be harvested by seed propagation, and the strong mother tree should be selected for seed collection, and the seeds should be collected when most of the fruit becomes black. Can be collected on the floor with plastic sheeting. The seeds are first accumulated for 4-5 days, and after the pericarp is rotten, the fruit is peeled and cleaned, or the fruit is put into a bamboo basket and placed in water to remove impurities and shrunken seeds floating on the surface of the water, then knead repeatedly to separate the pericarp from the seed and rinse it with water. remove the pericarp and get the seed.

(2) the seeds selected after sowing and cleaning can be sowed after drying in the shade. If short-term storage is needed in case of autumn drought, wet sand storage can be used. The germination rate of seeds decreased with the extension of storage period. If the seed was sown in the second year, the germination rate decreased obviously and the germination was irregular. Therefore, the seeds should be sown from late August to the end of September. Sowing and raising seedlings should choose sandy loam with good drainage and irrigation conditions, turn deeply, rake broken, flat, make high border, 1 meter wide, 20 cm high, open horizontal ditch, apply base fertilizer, ditch distance 30 cm 40 cm, depth 5 cm 6 cm. Sow the seeds of sand storage evenly in the ditch, sowing 20,25kg per mu, covering soil 2cm, and covering grass, and uncover most of the seedlings when they are unearthed. The seedlings were unearthed for half a month, and light human and animal dung water was applied once, dilute at first and then concentrated, topdressing for 2 or 3 times, timely irrigation, shallow and middle tillage, weeding and interseedling. After 1-2 years of cultivation, the seedling height is 60-70 cm, which can be planted out of the nursery.

two。 Cutting propagation can be carried out by cutting propagation with 1-year-old branches.

II. Land selection and preparation

The forest land should be selected with sunny slope, high altitude, thick soil layer, good drainage, loose structure of yellow-red soil or mountain brown soil and pH4.5~6. Low hilly gentle slope can be reclaimed by tractor or ribbon soil preparation, deeply turned over the land 30cm to 40cm, the mountain with a large slope, can take contours horizontal slope preparation, deep turning 25cm 30cm.

Third, build an economic forest

1. The period of planting and transplanting is better after defoliation in early spring or late autumn. Water thoroughly 1 or 2 days before digging seedlings. After seedling emergence, the residual roots should be trimmed, soil or mud roots should be used. Can press row distance 3 meters x 2 meters, dig big hole, diameter 50 centimeters, depth 40 centimeters, pheasant pepper dioecious plant, its use part is fruit. In order to ensure the proper proportion of pollination trees and fruit trees per unit area, 3 trees per hole are often planted in eastern Sichuan, which are arranged in the shape of "product", so that male and female plants can be selected properly after entering the flowering stage. Planting seedlings is not too deep, in the root neck 3-4 cm, cover the soil firmly, pour enough water to fix the root.

two。 Seed sowing can be direct seeding afforestation, preferably with seed collection, no more than 5 days, hole width of 30 cm, depth of 15 cm, each hole sowing 6-8 seeds, covering soil 2 cm. The seedlings came out in the next spring, weeded and loosened the soil half a month later, and then loosened the soil and weeded again from July to August.