Detailed Explanation of Schisandra Seedling Cultivation Techniques: Master Sowing and Management Methods

For Schisandra cultivation, there are generally several methods such as seed propagation (seedlings), cutting propagation, and layering propagation. Since there are currently relatively few superior varieties, production seedlings are still mainly seed-grown seedlings. Below is a focused introduction to the method of cultivating seed-grown seedlings.

1. Seed treatment: At the end of September, select fruits with large clusters and many seeds of uniform size, soak them in clean water for 2-3 hours, rub off the flesh, remove inferior seeds, scoop them out and air-dry. Then mix the washed, plump seeds with three times the amount of fine sand. Choose a wind-sheltered, sunny spot and dig a pit 60-70 cm deep. Place the sand-mixed seeds into cloth bags or gunny bags, bury them in the pit, and carry out cold stratification treatment. After the spring thaw the following year (around mid-March in northern regions), dig out the seeds and place them at 20°C-22°C for germination. When 70%-80% of the seeds have slightly cracked and the radicle has just emerged from the seed coat, this is the best time for sowing.

2. Sowing and seedling cultivation: Sowing can begin in early April. Choose a well-drained, fertile, flat, sunny location, apply sufficient base fertilizer, level the soil to conserve moisture, and make seedbeds 1.2 m wide. For ease of management, drilling in rows with a spacing of 15-18 cm is preferable. After sowing, cover with 2-2.5 cm of soil, press down lightly, cover with straw and water to prevent drought. The sowing rate is approximately 5 kg per 667 sq m. Seedlings can emerge 20-30 hours after sowing. At this time, remove the straw covers in batches, set up simple shade sheds, and appropriately apply additional fertilizer, irrigate, and loosen the soil.

Third, focus on pruning. While planting the young seedlings, cut back the main trunk at a low position to force the seedlings to sprout 3-4 main vines from the base as quickly as possible. After that, follow the principle of combining "long pruning" with "short pruning" and prune as lightly as possible, so that the branches and vines quickly cover the trellis surface, expand the fruiting branch groups, and lower the fruiting position.

In addition to the above three key measures, auxiliary measures such as appropriate close planting, mulching the tree disk with straw, applying boron during the flowering period, and artificial pollination have achieved very obvious results. It is estimated that a 5-year-old fruiting orchard yields 225 kg per mu, and 6-7-year-old orchards stabilize at 240 kg per mu, which is 3-4 times higher than wild varieties that have not been selectively improved.