What are the characteristics of fertilization in protected vegetables?
Professor Wang Xingren of China Agricultural University visited Shouguang, Qingzhou, Shandong, Dandong, Liaoning, and He County, Anhui Province, where he inspected greenhouse vegetable fertilization. What are the characteristics of fertilization in protective vegetables? A: First of all, greenhouses and other protected areas have high yields of vegetables and large amounts of fertilizers. Take organic fertilizers as an example, there is a saying that “a thousand kilograms of vegetables are used for fertilizerâ€; second, the growth period of vegetables is long, especially eggplant, tomatoes and sweet. Pepper and other eggplant vegetables, due to multiple fruit picking, usually top dressing 5 to 8 times; Third, due to long-term excessive partial application of chemical fertilizer, making the soil salinization and acidification, prone to calcium deficiency, magnesium deficiency, boron deficiency and other physiological Diseases, together with the closed management conditions of greenhouses, are also prone to bacterial and insect pests. Fourth, due to large water and large fertilizers, fertilizer nutrients, especially nitrogen, penetrate into the bottom layer. Serious waste of resources and environmental pollution. CHUNK,High Quality CHUNK,CHUNK Details, CN Tropical Food Manufacturing (Ningbo) Co., LTd , https://www.tropical-food.com