Detailed Explanation of Key Points of Field Fertilization Techniques for Schisandra chinensis

In recent years, as the market prospects for Schisandra chinensis have become increasingly favorable, farmers' enthusiasm for planting it has also risen. The planting area has gradually expanded, but in production practice, as the number of planting years increases, the nutrients in the soil decrease day by day, and soil fertility gradually can no longer meet the growth needs of Schisandra chinensis. In order to prevent Schisandra chinensis from suffering fertilizer deficiency and affecting the yield and quality of the following year, scientific and rational fertilization is very important.

In the year Schisandra chinensis is transplanted, its root system is not well developed, its ability to absorb nutrients is relatively weak, and its branches are relatively thin. In order to promote seedling growth and strive to see fruit in the second year, urea can be applied once in late May, 11 kg per mu, to meet the need for nitrogen fertilizer. The second topdressing is in late June to early July, applying 8 kg of urea, 14 kg of superphosphate, and 8 kg of potassium sulfate per mu. The method is to open furrows 0.3 m deep and apply the three fertilizers evenly mixed into the soil. The third fertilization is in early to mid-September, applying 1800 kg of well-decomposed farmyard manure per mu, in preparation for the second year. Schisandra chinensis has a high fertilizer demand during the peak period of fruit growth. During this key period, foliar fertilizer can be sprayed, such as spraying 0.5% urea and 0.3% potassium dihydrogen phosphate 1-2 times, with an interval of 7-10 days.

The first two topdressings should be combined with irrigation. The third fertilization does not require irrigation, but the soil should be covered after fertilization. Foliar fertilizer should be sprayed in the morning and evening, and spraying before rain should be avoided. Starting from the first year of transplanting, Schisandra chinensis must be fertilized every year. The fertilization methods are roughly the same, but the amount of fertilizer applied later should be increased accordingly according to the degree of growth of the tree.