After the urea is applied to the soil, it is converted into ammonium nitrogen by the action of urease to be absorbed and utilized by the crop. Because urea is an amide nitrogen fertilizer, it has low adsorption force with soil colloid, and has strong fluidity and leaching. If it is applied with water, urea is difficult to be adsorbed by soil colloid and converted into ammonium carbonate or ammonium bicarbonate to exert fertilizer effect. More loss. When urea is applied to the soil and converted into ammonium nitrogen, it loses its original stability, is easy to volatilize, and increases its volatilization with the increase of soil alkalinity. It is tested according to the soil with pH of 7-8. Urea begins to volatilize in half a day and reaches its peak in three days. Therefore, it should be avoided if it is applied or applied shallowly. Deep application can be carried out by means of ditch application or hole application. The depth of fertilization is 10-15 cm, and the distance from the plant is 5-10 cm. After application, the soil is covered and compacted. Do not water for 2-3 days after application. Disclaimer: Some articles on this website are transferred from the Internet. If legal rights of third parties are involved, please inform this website. phone Frozen Horse Mackerel,Round Scad Fish,Frozen Horse Mackerel Wr 15Cm,Horse Mackerel Wr Fish Zhoushan City Shuangying Aquatic Products Co., Ltd.  , https://www.shuangying-aquatic.com