Detailed Explanation of Key Techniques for Direct Seeding and Seedling Cultivation of Schisandra chinensis in Open Fields

Select a sunny plot with loose soil, flat terrain, moist soil and no water accumulation, and make a low bed 1.2---1.4m wide, 10m long, with a level surface. Sowing uses the drill method. Before the autumn freeze, open shallow furrows 2-3cm deep on the prepared seedbed at a row spacing of 15cm, sow 100g of seeds per bed, cover with soil 3---4cm thick, water thoroughly, press down lightly, then cover with 10cm of leaves or a layer of rice straw to maintain moisture and protect against cold, and remove it when the seedlings emerge. To prevent damping-off and other soil-borne diseases, after sowing and covering with soil, while watering, spray 800-1000 times diluted 50% amobam. Autumn sowing is generally carried out in late October. If autumn sowing is not timely, sowing can also be done after the soil thaws in the following spring, but the temperature for stratification treatment should be low to ensure that the seeds have just cracked when sown in spring, and the soil moisture should be maintained after sowing. The uniformity and rate of emergence are slightly lower than with autumn sowing. Spring sowing is generally carried out in early May. After autumn sowing, seedlings begin to emerge from mid-May to the end of May of the following year (after spring sowing, seedlings emerge 3-4 weeks after sowing). After more than 50% of the seedlings have emerged by mid-June, set up a shade shed to prevent high temperatures and strong light, with a light transmittance of 50% as suitable. In mid-August, when the seedlings are 5-6cm tall, thin them in time at a plant spacing of 7-10cm, and remove the shade shed at this time. The seedbed should be kept moist at all times, and weeds should be pulled out at any time.