Planting technology of fresh white bark

The transplanting land of cortex dictamni should be gentle slope land with deep soil layer and good drainage. After deep ploughing, 1500~ 2000kg of decomposed farm manure should be applied per mu. In the first two years, weeds should be removed. Weeding should be done 3~4 times a year. After 3 years, weeding times should be reduced. Topdressing should be done twice in late May and early June, 800~ 1000kg of farm manure should be applied per mu or 8~ 10kg of urea should be topdressed, and 0.3%~0.5% potassium dihydrogen phosphate foliar fertilizer should be sprayed once after the beginning of autumn.

Cultivation method of cortex dictamni

1. Selection of land: The transplanting land of Dictamnus chinensis should be gentle slope land with deep soil layer and good drainage. In mountainous areas, the cultivation of hillside wasteland, orchard and artificial young forest with sufficient sunshine can be used, and the low shrub space of tussah workshop and hazelnut garden can also be used for cultivation.

2. Soil preparation: the planting land of Dictamnus chinense is deeply ploughed, 1500~2000 kg of decomposed farm manure is applied per mu, and the width of 100~1200 cm is made after fine harrowing. The length depends on the terrain, generally 20~30 meters is appropriate, and the width of the operation road between the ridges is 40 cm.

3. Transplanting: The planting depth of Dictamnus heterophylla is determined according to the root system size of transplanted seedlings. The terminal buds of seedlings are placed upward in the transplanting groove. The terminal buds should be 1~2 cm lower than the ridge surface. The root system should be spread 35~40 cm apart. After being arranged, soil should be covered. After soil covering, the ridge surface should be leveled, and a little shock pressure should be added.

4. Weeding: In the first two years of transplanting Dictamnus dictamnus, the seedlings are small. In line with the principle of eliminating grass, weeding 3~4 times a year. After 3 years, the plants have grown very tall, grass damage has little effect on them, and the relative weeding times have decreased.

5. Fertilization: Dictamni bark is topdressed twice in late May and early June, 800~1000 kg farm manure or 8~10 kg urea is topdressed per mu, and 0.3%~0.5% potassium dihydrogen phosphate foliar fertilizer is sprayed once after the beginning of autumn.