Aging seedlings are caused by large seedlings or seedlings that take too long. Prevention and control measures are to strictly control the seedling age, seedlings should be appropriate to the length of time; seedlings, the low temperature time should not be too long, to prevent prolonged drought caused by seedlings aging, seedlings the best way to control the temperature does not control water; on the aging seedlings, can Spray 10 to 30 ppm of gibberellin solution and 300 to 500 times potassium dihydrogen phosphate solution per square meter of seedbed to stimulate seedling growth. Frozen seedlings are caused by a low seedbed temperature. Prevention measures are to improve the means of raising seedlings, using electric hotbed nursery; to strengthen the night insulation measures before the onset of the cold current, such as thick straw, plus a small arch shed, etc., if necessary, to take warming measures, such as furnace fire; appropriate control of watering , Reasonable application of phosphate fertilizer to improve the cold resistance of seedlings. The wilting seedlings were all exposed after the sudden rainy weather suddenly turned fine. The prevention and control measures are to allow the seedlings to gradually see light in the event of a sudden turn of cloudy days on a continuous cloudy day. Do not immediately uncover all coverings. Remove them in batches and gradually increase light. If there are any wilting seedlings after the exposing, you must immediately return them. Shelled seedlings are mainly due to over-dry seedbeds and overlying soil. The prevention and control measures are that the bottom water of the seedbed should be sufficient, the thickness of the cover soil should be uniform and appropriate, and the thickness of the cover soil should generally be 2 to 3 times the diameter of the short axis of the seed; the seedbed should be covered with a plastic film to keep the soil moist; if a shelled seedling appears, water can be sprayed first. After the shell has absorbed moisture, gently brush the shell away with a brush, taking care not to brush the sprouts. Http://Content/099b5f09-8794-45fc-8e73-d54ab17128fb?cType=2 Plant extracts refer to substances extracted or processed from plants (all or a part of plants) with appropriate solvents or methods, which can be used in pharmaceutical industry, food industry, daily chemical industry and other industries. Nowadays, the application range of plant extracts has been very wide. In addition to traditional Chinese medicine products, with the gradual increase of people's trust and reliance on natural products, a large part of plant extracts have been used in health care products and food ingredients. In addition, plant extracts have been used in cosmetics and feed in recent years. Andrographis Paniculata Extract,Hydrocotyle Asiatica Extract,Icariin,Reishi Mushroom Extract,Maca Root Extract Xi'an Gawen Biotechnology Co., Ltd , https://www.amulyn-bio.com