During the growth of rapeseed, different degrees of discoloration may occur in the leaves due to the lack of certain nutrient elements or adverse external factors. In production, appropriate management measures can be taken according to changes in the leaf color of vegetables. Yellow leaves: Caused by insufficient nitrogen, the leaves of the seedlings are uniformly yellowish green or yellow. Per 100 square meters, 1.5 kg urea or 3 kg of ammonium bicarbonate or 150 kg of human feces and urine can be poured into the water. Red leaves: When the leaves of the seedlings are light red due to insufficient soil moisture, they should be dredged and drought-fighted immediately; excessive rain, damage to the roots, dark red leaves should be drained and drained; the temperature is below 0Â°C. When it is red when it is frozen, it can be combined with cultivating soil, and 10-15 kg of plant ash can be applied per 100 square meters; when the locust infestation causes redness of the leaves, 80% of dichlorvos can be sprayed to cure pests. Purple leaves: When the soil is deficient in phosphorus, the rapeseed plants grow slowly, the leaf color lacks luster, there are purple-red spots or plaques on the edge of the veins, and the petiole is purple. For every 100 square meters, 3.5-4 kg of superphosphate may be topdressed, or 2-3 times with foliar potassium dihydrogen phosphate 400 times. Brown leaves: Due to lack of potassium, there are yellow spots at the beginning of the leaves, and the edges of the leaves gradually appear as â€œfocal edgesâ€ and light brown spots, starting from the old leaves and developing toward the heart, and gradually wither. For each 100 square meters, 1-1.5 kg of potassium chloride or 15 kg of plant ash may be topdressed, or 2-3 times may be sprayed with potassium dihydrogen phosphate 400 times. (Yuhong)

Take a look at the applications of mushroom extracts

Mushroom extracts are active ingredients extracted from mushrooms. Mushrooms are a class of edible fungi with rich nutritional and medicinal values, containing a variety of bioactive substances, such as polysaccharides, polypeptides, alkaloids, phenolic compounds, etc., which have a wide range of bioactivities such as antioxidant, antitumor, antibacterial, immunomodulation and so on.

The following are some common application fields:
1. Pharmaceutical field: mushroom extracts have anti-tumor, anti-inflammatory, anti-bacterial and anti-viral effects, and can be used to treat cancer, inflammatory diseases, infectious diseases and so on. For example, Ganoderma lucidum extract is widely used in the adjuvant treatment of cancers such as liver cancer and lung cancer.
2. In the field of health care products: mushroom extracts are rich in polysaccharides and polypeptides and other nutrients, which have the effects of enhancing immunity, delaying aging and improving sleep, and can be used to make health care products. For example, Cordyceps sinensis extract is used to make immunomodulation and anti-fatigue health products.
3. Cosmetic field: mushroom extracts have antioxidant and anti-aging effects, and can be used to make anti-aging, whitening, moisturizing and other effects of cosmetics. For example, ginkgo biloba extract is used to make whitening masks, anti-aging essence and other products.

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