How to apply fertilizer to plant ginseng (American ginseng)?

How to apply fertilizer to plant ginseng (American ginseng)? Ginseng and American ginseng are perennial root plants and have strict requirements for fertilizer. After expert research, it is found that it is a potassium-loving plant, and its absorption of potassium is far greater than that of nitrogen and phosphorus, that is to say, potassium is an important factor to determine whether ginseng is high-yield or not. And with the increase of growth years, the nutrient requirement of 4-5-year-old ginseng is the highest. Nitrogen can promote the formation of chlorophyll and stem and leaf growth, make ginseng develop healthily; phosphorus can promote ginseng root development, make grain full, enhance cold resistance, drought resistance and saline-alkali resistance; potassium topdressing can increase photosynthesis, enhance stem, promote root development, delay senescence and improve yield and quality. But in use, the proportion should be reasonable. The ratio of nitrogen, phosphorus and potassium required by ginseng is about 2VOV 0.5. In this ratio, the sources of nitrogen, phosphorus and potassium include available nutrients and available nutrients that we need to apply. The characteristics of soil fertilizer supply in the main ginseng producing areas are as follows: high content of total nitrogen and alkali-hydrolyzable nitrogen, high content of total phosphorus, but lack of available phosphorus and medium or insufficient amount of available potassium. Therefore, experts put forward a plan to control nitrogen fertilizer and increase the application of potassium fertilizer. Because phosphorus is easily fixed in the soil, the application amount of phosphorus should be increased, which is why the content of phosphorus in the three elements is much higher than that of nitrogen. The three-element fertilizer with high phosphorus and potassium content with the ratio of N, P and K is 10-23-12, which can just meet the needs of the growth and development of ginseng. Suggestions on the rational application of organic fertilizer and chemical fertilizer: 1. Sowing and newly planted ginseng land can be used Shierkang 0.75Mi 1.25kg + three elements 0.4MIT 0.5kg / Zhang. 2. 2-3 years old and 4-5 years old: Shierkang 0.75 Mel 1.25 kg + three elements 0.4 Mel 0.5 kg / Zhang. That is, in the combined use of nitrogen, phosphorus and potassium, attention should be paid to the degradation of pesticide and chemical fertilizer residues, improvement of soil quality and bacterial fertilizer rich in various trace elements. 3. Topdressing can use Shierkang ginseng fertilizer 1 jin / Zhang + three elements 1 jin / Zhang; or diammonium 1 jin / Zhang + potassium sulfate 0.5 jin / Zhang; or Shierkang ginseng fertilizer 1 jin / Zhang + diammonium 1 jin / Zhang or Shierkang ginseng fertilizer 1 jin / Zhang + potassium sulfate 0.5 jin / Zhang. Use spreading combined with loosening soil and watering. Click to get more ginseng planting technology click to get more medicinal material planting technology