Seedling Raising Techniques of Fructus Schizandra

Schisandra chinensis seedlings, there are generally sowing seedlings (seedlings), cutting seedlings and striping seedlings and other methods, because there are few excellent varieties, seedling production is still based on seedlings. The following focuses on the cultivation methods of seedlings.

1. Seed treatment: at the end of September, the fruit with large spike grains and uniform size was soaked in clear water for 2 hours, then the pulp was rubbed, the secondary seeds were picked out, and dried, then the washed and full seeds and three times the amount of fine sand were mixed well, and a deep pit of 60cm to 70cm was dug in a place away from the wind and sun, and the seeds mixed with fine sand were put into cloth bags or sacks, buried in the pit and frozen. After thawing in the spring of the second year (around mid-March in the north), dig out the seeds and put them at 20 ~ 22 degrees to promote germination. When 70% to 80% of the seeds have a slight crack and the radicle has just exposed the seed coat, sowing is the best time.

2. Sowing and raising seedlings: you can sow seeds in early April. Choose good drainage, fertile soil, flat and sunny place to apply enough base fertilizer, flat to preserve soil moisture, to make a 1.2-meter-wide seedbed. In order to facilitate management, it is better to use strip sowing with a row spacing of 15 cm to 18 cm, covering soil 2 cm to 2.5 cm after sowing, slightly suppressing, covering grass and watering to prevent drought. The sowing rate is about 5 kilograms per 667 square meters. The seeds can emerge 20 to 30 hours after sowing. At this time, the grass curtain should be removed in batches, a simple shading shed should be set up, and the soil should be properly fertilized, irrigated and loosened. "

Third, pay attention to pruning. The trunk was cut off at the low position while the seedlings were planted, so as to force the seedlings to sprout 4 main vines from the base as soon as possible. Since then, in line with the principle of "long release" and "short cut", cut as lightly as possible, so that the branches are quickly covered with the shelf surface, expand the fruiting branch group, and reduce the fruiting part.

In addition to the above three key measures, some auxiliary measures have been taken, such as proper close planting, tree plate covering grass, boron application at flowering stage, artificial pollination and so on. It is estimated that the yield per mu of 5-year-old orchard is 225 kg, and that of 6-7-year-old orchard is stable at 240 kg, which is 4 times higher than that of the wild variety 3mi.