First, the symptoms. Umbilical rot disease can occur before the size of tomatoes, such as the thumb, until the color matures. The lesions only occur in the umbilicus at the top of the fruit. The lesions were initially dark green with water immersion. They soon turned dark brown or black with necrotic spots 1-2 cm in diameter or larger. The flesh of the lower part of the lesions rotted and shrunk. The umbilical part was hollow, sometimes cracked, and the fruit became flat. Sweeten. In severe cases, the lesions spread to half of the fruit surface. The fruit stagnated and inflated, turning red earlier, and the peel was pliable and dull, losing its food value. Second, the cause of the incidence of umbilical rot. First, during fruit enlargement, the water supply is not balanced, especially under drought conditions, or when the water absorption ability of the root system is weak, the water supply is unbalanced, the water in the umbilical contends for moisture, which impedes the growth and development of the umbilical rot, and the umbilical rot is formed due to calcium deficiency; Department of cell disorders, leading to disease. Third, affect the incidence of umbilical rot disease conditions 1, soil texture. The sand is strong, the leakage of water leakage is serious and the weight of saline-alkali heavy land is heavy. 2, the terrain. The slopes are large, and the land where water and fertilizer are easily lost is heavy. 3, soil calcium content. Soil contains less calcium and organic acids, especially when soluble calcium is insufficient. 4, the birth phase. During the fruiting period of large number of tomatoes, there was a shortage of water supply, or fertilizer application was too late, suddenly increased the concentration of soil solution when the disease became heavy. Fourth, control methods. Controlled nitrogen application, balanced fertilization with nitrogen, phosphorus and potassium, and appropriate amount of foliar sprayed calcium are all beneficial to the prevention and treatment of the occurrence of umbilical rot. 1. Apply basal fertilizer when leveling the ground, add organic fertilizer with phosphorus and potassium as fertilizer in tomato base fertilizer, such as using ordinary calcium and potassium sulfate or compound fertilizer with medium-nitrogen and medium-phosphorus-potassium as base fertilizer. 2, timely irrigation, to avoid dry and wet soil, in particular, do not make the soil too dry. Pour the first water when planting, and the second water is poured when the fruit is set at the beginning of the flower. The amount of water should not be too large. After the third inflorescence was opened, the first fruit was as large as an egg before pouring water. Keep the soil moist, summer irrigation should be carried out in the early morning or dusk, pay attention to pouring, shallow pouring. 3, take the method of connecting calcium and foliar roots. After applying calcium fertilizer out of the root, tomato is a key period for absorbing calcium within 30 days after fruit set, so spray 1% of superphosphate or 0.1% of calcium chloride or calcium-containing compound fertilizer from leaves at the beginning of flowering stage. Spray 1 day, continue spraying 2-3 times.
Shandong Chunyu Water-saving Irrigation Equipment Co., Ltd., founded in 2011, is located in Laiwu High-tech Zone, Jinan City. It is a high-tech enterprise focusing on innovative and efficient emitter mold manufacturing and emitter product research and development and production. After nearly ten years of innovation and development, it is the invisible champion enterprise in Shandong Province, and now it is in a leading position in this field in China.
Spring rain people-oriented, build talent highland. At present, the company has 16 high, fine and advanced technical personnel, and cooperates with a number of scientific research institutes, forming a mold design, emitter testing, flow testing and other professional technical personnel team. In recent years, it has obtained 3 invention patents, 33 utility model patents and 3 patent awards. In 2019, it was identified as an intellectual property advantage enterprise in Jinan. It has undertaken 4 provincial science and technology innovation projects and won 2 second prizes of Shandong Science and Technology Progress Award. The company has built Jinan drip emitter mold engineering technology research center, the company has a slow wire cutting, CNC machining center, precision EDM machine, 3D projection measuring instrument, CNC engraving, laser engraving and other advanced processing equipment. Mature technology and rich experience support the excellent quality of Chunyu. Spring Rain pays attention to every link of production, implements 8S management, strictly controls the quality of products at the beginning, the middle and the end, and forms the seamless link of production management. The company has independently researched and developed flat emitter molds with full hot runner, cylindrical emitter molds with full hot runner and other products. With excellent quality, competitive price and good after-sales service, the company is well known at home and abroad, and has been sold well in Egypt, India, Iran, Turkey, Saudi Arabia, the United States and other countries.
With the vision of "building a global professional emitter mold supplier" and the mission of "providing solutions for efficient and innovative production of global water-saving irrigation enterprises", the company takes "scientific and technological innovation to scale new heights; Keep improving, the pursuit of excellence; Honesty and trustworthiness, win-win cooperation "for the values of the enterprise. For the construction of water - saving and resource-saving society to make a positive contribution.
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