Difficulties and Countermeasures in artificial cultivation of Schisandra chinensis

Schisandra chinensis (Schisandra chinensis) is an authentic northern medicinal material. Recent studies have proved that Schisandra chinensis can regulate the cardiovascular system, improve blood circulation, stimulate the central nervous system, and has a good effect on the treatment of hepatitis. Schisandra chinensis is also used in wine making, seasoning, extraction of flavors and pigments, food preservatives and so on.

At present, with the continuous collection of Schisandra chinensis, wild resources are decreasing, the cost and difficulty of collection are gradually increasing, and the environmental damage caused by the collection of wild resources has attracted great attention. Therefore, artificially cultivated Schisandra chinensis will gradually replace wild resources. Artificial cultivation of Schisandra chinensis has a tendency to expand in Liaoning, Jilin and Heilongjiang, but there are also some difficulties in cultivation, such as herbicide damage, late frost injury and so on, which affect the development of artificial cultivation of Schisandra chinensis. Let's talk about our experience.

I. hidden drug damage of herbicides

Herbicides are widely used in farmland soil for many years, and the herbicide damage is obvious due to the deposition residue for many years. First, it is difficult for the new roots of Schisandra chinensis to germinate and inhibit the growth, and even the leaves wither. In that year, the general growth of Schisandra chinensis should be more than two meters, and the growth of about one meter high is inhibited by herbicides, especially Schisandra chinensis is the most sensitive to atrazine; second, Schisandra chinensis absorbs herbicides in the soil and remains in Schisandra chinensis, reducing the quality. Therefore, the farmland soil, especially the land where atrazine has been applied for many years, must apply the new soil conditioner Wotuan to eliminate the hidden drug damage in the soil in order to transplant Schisandra chinensis. There are two application methods: one is to evenly spray 750 grams of Wotuan with 1000 kilograms of water on one mu of soil, then turn it over for 2 to 3 times and mix it with the soil evenly; second, after transplanting Schisandra chinensis, each plant is irrigated with 2 kilograms of 1 000 to 2000 times of liquid Wotoan.

II. Drift hazards of herbicides

Closed weeding is carried out in corn, soybean and other fields. Schisandra chinensis in adjacent plots is damaged by the drift of atrazine, Acetochlor and other pesticides, and its symptoms are wrinkled leaves, curling and yellow edges. When it is found that Schisandra chinensis is damaged by medicine, the harm of herbicide can be eliminated by spraying up to 750 times of green liquid immediately, that is, 20 grams of each bag mixed with 15 kg of water at an interval of 5 days, foliar spraying twice.

Third, the harm of late frost

After the germination of Schisandra chinensis in early spring, the young tissue was damaged by late frost. On April 27, 2003 and May 8, 2004, Schisandra chinensis was harmed by late frost for two consecutive years, and there was almost no yield in that year. Therefore, the cultivation of Schisandra chinensis should be selected as far as possible to avoid areas vulnerable to late frost.

1. Smoke to remove frost, pay attention to weather changes, listen to the weather forecast, and use hay fumigation before frost to eliminate frost harm. Every 10 meters a pile of firewood, straw, sawdust, rice husks, etc., before the frost comes, usually after 1: 00 in the morning, light the haystack, press a layer of soil, slowly release smoke, use the method of smoking to drive out the frost.

two。 After sprouting and developing leaves of Schisandra chinensis in early spring, antifreeze or Luda foliar fertilizer was sprayed on the leaves to increase the concentration of cell fluid, increase the cell pressure and enhance the resistance to frost.