The fertilization of green vegetables is mainly based on the improvement of soil fertility by organic fertilizers, but can't green vegetables really use chemical fertilizers?
Green food and fertilizer application are not contradictory
Do n’t set green foods against the application of chemical fertilizers. Chemical nitrogen fertilizers are inorganic nitrogen sources that can be directly absorbed by vegetables. Organic fertilizers are decomposed by microorganisms to convert organic nitrogen into inorganic nitrogen. It also supplies inorganic nitrogen to vegetables. Absorbed. Therefore, the view that "vegetables with chemical fertilizers are not green food-standard vegetables" is incorrect.
Properly control the amount of nitrogen fertilizer
In order to ensure that the green food standard vegetables have better yield and economic benefits, based on the application of organic fertilizers, proper application of nitrogen fertilizer is necessary, but the amount must be controlled. In the current situation that green food vegetables are not valued by quality, it is difficult to resolve the contradiction between quality and yield, yield and benefit without applying chemical nitrogen fertilizer.
Strictly grasp the topdressing time of nitrogen fertilizer
The nitrate content of vegetable crops is constantly changing. Because the nitrogen that enters the vegetable body is further converted into amino acids during the metabolic process to synthesize proteins. According to research, with the application of nitrogen fertilizer, the nitrate content in vegetables tends to decrease gradually. Therefore, for safety reasons, the topdressing time for green food vegetables should be 15-20 days before harvest. In addition, the combined application of nitrogen fertilizer and potassium fertilizer can promote protein synthesis and reduce nitrate content in the body.
Disclaimer: Some articles on this website are transferred from the Internet. If you have third party legal rights, please inform this website to deal with them. phone
Household Oxygen Generator is a type of machine for producing oxygen, its principle is to use air separation technology. First, the air is compressed at a high density and then the different condensation points of each component in the air are used to separate the gas and liquid at a certain temperature, and then rectify it to separate it into oxygen and nitrogen. In general, people are used to calling it an oxygen generator because it is mostly used to produce oxygen. Because oxygen and nitrogen are widely used, oxygen generators are also widely used in the national economy. Especially Homecare Oxygen Concentrator and Household Medical Devices for hospital and household.
The first countries in the world to produce oxygen generators were Germany and France. The German Linde Company made the world's 10th m3/s oxygen generator in 1903. Following Germany, the French Air Liquide Company also began to produce oxygen generators in 1910. Since 1903, the oxygen generator has a history of 100 years.
Household Oxygen Generator,Homecare Oxygen Concentrator,Household Oxygen Machine,Household Medical Devices
Haloxylon Ammodendron Medical Equipment Co., Ltd. , https://www.haloxylonhospital.com