There is a taboo in the application of nitrogen fertilizer in autumn sowing
Doripenem Price,Doripenem Powder,Doripenem Hydrate,Doripenem Side Chain Xinxiang Haibin Pharmaceutical Co.,Ltd , https://www.carbapenemspharmacy.com
July 29 15:18:41, 2020
At present, the application of various chemical nitrogen fertilizers is relatively common in agricultural production. However, in practice, there are often some incorrect application methods that affect the normal functioning of nitrogen fertilizers, and even waste nitrogen fertilizer resources. How can nitrogen fertilizer be used to maximize its fertilizer efficiency and increase its utilization rate? At the moment of the autumn sowing, we will consult the relevant information and list the restricted areas for the application of chemical nitrogen fertilizers so as to arouse the attention of farmers' friends. We also hope to help this year's autumn production. 1. Ammonium nitrogen fertilizer should not be mixed with alkaline fertilizers. Because ammonia will evaporate after mixing, it will reduce the effect of fertilizer. Ammonium nitrogen fertilizers commonly used are ammonium bicarbonate, ammonium sulfate, ammonium chloride, ammonium phosphate, ammonium nitrate, etc.; alkaline fertilizers are calcium magnesium phosphate fertilizer, grass charcoal, lime and so on. 2, nitrate nitrogen fertilizer and organic fertilizer should not be mixed. Organic manure contains more organic matter. Nitrate and nitrogenous fertilizers will cause nitrification under the action of denitrifying bacteria and lose nitrogen. Commonly used nitrate nitrogen fertilizer such as ammonium nitrate, sodium nitrate, calcium ammonium nitrate and so on. 3. Nitrate-nitrogen fertilizers are prohibited from pouring in large amounts after raining or after application. 4, urea should not close to the seed. Urea contains biuret, which affects the germination of seeds. Too high concentrations can poison the seeds. When using urea as a seed fertilizer, do not directly contact the fertilizer with the seed or control the application amount, and do not exceed 2.5 kg per mu. 5, urea should not be applied shallowly. After being applied to the soil, it is hydrolyzed into ammonium bicarbonate by the action of soil microorganisms, and then decomposed and volatilized. 6, urea as top dressing concentration should not be too high. As a foliar fertilizer, the urea effect is indeed good, but blindly increasing the dosage to increase the concentration will be counterproductive. Appropriate application concentration is: grain and cotton crops 0.8% to 1%, fruit and vegetable tea and other efficient economic crops 0.4% -0.6%. 7, ammonium bicarbonate should not be applied on the surface of the table too long, avoid shallow application. Ammonium bicarbonate is extremely unstable in nature and should be covered with soil immediately after application and with proper application. 8, ammonium sulfate should not be long-term application. Ammonium sulfate is a physiological acid fertilizer, and long-term application will increase soil acidity and damage soil structure. Sulfate ions applied to calcareous soils react with calcium to compact the soil. Therefore, it should be applied alternately or alternately. 9. Ammonium sulfate should not be used in large amounts in paddy fields. As it falls into the oxygen-depleted reducing layer after application, sulfate ions are reduced to hydrogen sulfide, forming black ferrous sulfate around the roots of the rice, forming black roots and losing nutrients. 10, ammonium chloride should not be applied to potatoes, sweet potatoes and other chlorine crops. Because of the side effects caused by the use of chlorine-tolerant crops, the physiology of crops is destroyed, the crops die, and the quality of the harvest declines. For example, common melon vegetable starch and sugar content decrease, tobacco taste deterioration flammability, etc., are mostly caused by the excessive application of nitrogenous fertilizer, resulting in chloride ion poisoning.