The growth period of rice can be roughly divided into: emergence period, tillering period, jointing period, booting period, heading period, flowering period and filling maturity period, and the demand for nutrients is different in each growth period. Nitrogen Absorption Laws Rice has two distinct peaks for nitrogen uptake: first, rice tillering, ie two weeks after transplanting; second, 7-8 weeks after transplanting, if nitrogen supply is insufficient, it often causes degradation of spikelets. Not conducive to high yields. Phosphorus Absorption Law The uptake of phosphorus by rice is far lower than that of nitrogen fertilizer, which is about half of the average amount of nitrogen. It is most abundant in the seedling stage and tillering stage, and it is the absorption peak around 3 weeks after transplanting. Potassium absorption law The demand for potassium by rice is higher than that of nitrogen, indicating that rice needs more potassium, and the peak of potassium absorption is from the peak of tillering to the jointing stage, and the demand for potassium is the largest at this time. Laminated Fabric,Two Layer Lamination,Multi Layer Lamination,Laminated Printing Non Woven Fabric ShaoXing SurgeCare Medical Products Co., Ltd. , https://www.sxsurgecaremedical.com