Identification of Fructus Schisandrae chinensis
Schisandra chinensis is divided into Liao Wuwei and Shanwuwei. It has a long history of application and is very popular in recent years. Especially last year, Korean pharmaceutical merchants came to our country to purchase a large number of Liao Wuwei. As a result, the price of Liao Wuwei rose to about 70 yuan, and the price of medicinal materials rose. Illegal traders tried to adulterate counterfeit. When the price of Liaowuwei was high, they mixed Shanwuwei into @ # @ 136 flavor. Now the prices of Liao Wuwei and Shanwuwei are not much different. And they are all high, they also mixed a kind of wild home-made mountain grape seed, in order to improve everyone's identification ability, now list the key points of identification for reference. Liao Wuwei: also known as North Wuwei, is irregular spherical, 5-8 mm in diameter, the surface is purplish red, the old product color is dark, brown, the pulp is wrinkled, soft, taste has a strong sour taste, there are 2 yellow kidney-shaped seeds, individual contains 1 seed, the seed coat color is bright, crushing has fragrance, the taste is hard. Shanwuwei: also known as Xiwuwei, Nanwuwei, irregular spherical, 3-5mm in diameter, slightly smaller than Liao Wuwei, the color is not Liao Wuwei red, dry products are mostly brownish red, thinner than Liao Wuwei pulp, containing 1-2 kidney-shaped seeds, taste slightly sour, hard. The appearance of mountain grape is very similar to that of mountain grape, the fruit is light, the outer skin is easy to crush, no wrinkle, no smell, and contains several orchard-shaped seeds. After the seeds are cut, the seed core is dark brown, while the genuine mountain five-flavor seeds are waist-shaped, and the core flesh is white after cutting. This is the most obvious difference between Schisandra chinensis and mountain grape. In addition, the flesh of Schisandra chinensis is not easy to peel off, the seed adheres with the pericarp, and the flesh wraps the seed tightly. The pericarp is soft, lightly twisted by hand, and has toughness. On the other hand, the peel of mountain grape is dry, thin and not close to the seed. If you twist it lightly with your hand, the peel will break the seed. In addition to mountain grape, some illegal traders in Schisandra chinensis mixed with a small amount of red beans, lentils and broken branches, and so on, have achieved the purpose of weight gain, if carefully identified, it is not difficult to find, please the drug units and the majority of drug manufacturers pay attention to identification.
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Comprehensive control of powdery mildew of Schisandra chinensis
1. Powdery mildew in the field mainly harms the leaves of Schisandra chinensis, and when it is serious, the fruit, petiole and stem are also damaged. In the early stage of the disease, white fine powdery mildew spots appeared, which gradually expanded and thickened the mildew layer, like a layer of flour on the leaves. The back of the mildew spot is initially a small chlorotic spot, which expands into irregular plaques with the development of the disease. In the later stage of the disease, black particles were produced in the mildew layer, resulting in mildew and grain loss of the fruit, reduction of yield and decline of quality at the same time. two。 The incidence of powdery mildew of Schisandra chinensis belongs to the subphylum powdery mildew of Schisandra chinensis.
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How to plant schisandra seedlings can improve survival rate?
Some people in planting seedlings, put seedlings into the pit, covered with soil on the end, this planting method is not good, affecting the survival rate. Normal seedling planting is to level the bottom of the dug pit with your hands, spread the roots of the seedlings at 120° for planting, so that the roots of the seedlings are in close contact with the soil, solid, and watered thoroughly. When planting schisandra chinensis in autumn, cut 3-5 buds from seedlings, bury all buds with soil after planting, cover the top of seedlings with 4cm thick soil, remove the soil when germination is required in spring, or do not remove the soil, let the buds grow from the soil, remember not to sprout after germination
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