Field fertilization technique of Schisandra chinensis

In recent years, with the increasingly optimistic market situation of Schisandra chinensis, farmers' enthusiasm for planting is also rising. The planting area is gradually expanding, but in production practice, with the extension of planting years, the nutrients in the soil are decreasing day by day, and the soil fertility can not meet the growth needs of Schisandra chinensis. In order not to let Schisandra chinensis get rid of fertilizer and affect the yield and quality of next year, scientific and rational fertilization is very important.

In the year when Schisandra chinensis was transplanted, the root system was underdeveloped, the ability to absorb nutrients was weak, and the branches were thinner. In order to raise seedlings and strive to see the fruit in the second year, urea could be applied once in late May, 11 kg per mu, to meet the need for nitrogen fertilizer. The second topdressing was from late June to early July, applying 8 kg urea, 14 kg superphosphate and 8 kg potassium sulfate per mu. The method was to mix the three fertilizers evenly into the soil at a depth of 0.3 meters. The third fertilization was in the first and middle of September, and 1800 kg of rotten farm manure was applied per mu, ready for use in the second year. Schisandra chinensis needs a large amount of fertilizer during the peak period of fruit growth, and the key period can be combined with spraying foliar fertilizer, such as spraying 0.5% urea and 0.3% potassium dihydrogen phosphate twice at an interval of 7 mi for 10 days.

The first two times of topdressing should be combined with irrigation, and the third fertilization should not be irrigated, but the soil should be covered after fertilization. Spraying foliar fertilizer should be carried out in the morning and evening to avoid spraying before rain. Schisandra chinensis should be fertilized every year from the first year of transplanting, and the fertilization method is roughly the same, but the amount of fertilizer should be increased accordingly according to the growth degree of the tree.