The present invention provides a multifunctional pull faucet, comprising: a faucet body, a drawing part is provided at the water outlet port thereof, and the drawing part is connected to a main channel, wherein at least three are provided in the faucet body A branch channel, and the three branch channels are all connected to the main channel. A multifunctional pull faucet provided by the present invention, wherein the hot water channel, the cold water channel and the water purification channel (pure water channel) are all connected to the main channel , And the main channel is connected with the drawing part on the main body of the faucet, so that the drawing part can obtain the water quality (hot water, cold water, purified water or pure water) required by different users, thereby improving the user experience, and , By integrating the hot water channel, cold water channel and pure water channel (pure water channel) into the main channel, the internal structure of the faucet is simplified, and the production cost of the faucet is reduced. Abs Plastic Shower,Shower Head Set,Brass Shower Head,Color Changing Shower Head Yuyao Zelin Sanitary Ware Co., Ltd , https://www.zelinshower.com
In fact, excessive application of nitrogen fertilizer in vegetables poses a serious threat to people's health. The nitrate content of vegetables with excessive nitrogen application is 20-40 times that of normal conditions. Nitrate is converted into nitrite during transport or storage in the human body or in vegetables. Nitrite combines with various amines in the human body to form a strong carcinogen, nitrite.
Excessive application of nitrogen fertilizer also causes serious pollution to soil and water. Long-term application of large amounts of nitrogen fertilizer, especially ammonium sulfate, chlorination, etc., will gradually acidify the soil. The toxic substances such as sulfate, chloride and biuret remaining in the soil gradually reduce the microorganisms and cockroaches in the soil. The acidification of the soil also accelerates the leaching of nutrients in the soil, eventually causing the soil to be compacted and losing the value of cultivation.
Vegetables should pay attention to the application of nitrogen fertilizer. When applying nitrogen fertilizer, it is necessary to measure the amount to prevent excessive. Non-polluted cultivated vegetables should be banned from nitrate-nitrogen fertilizer and compound fertilizer produced from nitrate-nitrogen fertilizer. Adopt scientific fertilization method: the base fertilizer is mainly composed of decomposed organic fertilizer, and combined with phosphorus and potassium fertilizer. Topdressing should be based on the amount of fertilizer needed in different growth stages of vegetables. Note that the base fertilizer should be applied layer by layer, deep application or ditch application. Foliar spray or combination with watering and top dressing. Vigorously promote organic fertilizer and reduce the amount of nitrogen fertilizer. It is necessary to use more fully-fertilized high-quality livestock and poultry manure and other manure, and rational use of human excrement. Manure must be treated by accumulation, full fermentation, etc., and can be fermented by biogas at high temperature. Human excrement should be stored in a septic tank for fermentation, and add 3-5% superphosphate and gypsum powder to reduce the volatilization and loss of ammonia.
Vegetable nitrogen control fertilization technology
At present, pollution-free cultivation is the trend of the times. The use of low-toxic pesticides in vegetables has become a consensus, but vegetable farmers rarely associate vegetable fertilization with the hygienic quality of vegetables.
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