Field experience before planting Angelica dahurica

Angelica dahurica likes to be warm and humid, sunny, afraid of high temperature, cold-resistant and adaptable.

Angelica dahurica

After the harvest of the previous crop, 2500 kilograms of rotten compost or barnyard manure, 100 kilograms of cake fertilizer and 50 kilograms of phosphate fertilizer can be used as base fertilizer per mu, and less fertilizer can be applied on fertile land. After application, ploughing should be carried out at a depth of more than 1 foot. After turning, the soil should be fully weathered, and then ploughed again. It is necessary to deeply plough the fine rake and make the fertility of the upper and lower soil layer uniform, so as to prevent too many roots due to the excessive fertilizer of the topsoil, affecting the yield and quality. After leveling and raking fine, make the border, the height of the border is 15ml 20cm, the width of the border is 1m, the surface of the border should be flat to facilitate irrigation and drainage, and the topsoil should be flat and fine to facilitate the emergence of seedlings.

Angelica dahurica

First, the sowing time production has strict requirements on the sowing date, and timely sowing is one of the important links to obtain high yield. If the seedlings are sown prematurely, the seedlings will grow too well before winter, and in the second year, some plants will bolt and blossom ahead of time, and the roots will become lignified or rotten, which can not be used as medicine, thus affecting the yield. If the temperature is too late, the temperature will drop, which will affect the germination and emergence of seedlings, and the seedlings are vulnerable to freezing injury, poor seedling growth and low yield. Due to the low germination rate of seeds in the next year and the high germination rate of fresh seeds, it is necessary to choose the fresh seeds harvested in the same year to sow, generally mainly in autumn, low yield and poor quality in spring sowing. The suitable sowing date varies with climate and soil fertility. Late sowing with high temperature, on the contrary, early sowing, suitable late sowing for fertile soil, and earlier sowing on the contrary.

Second, the sowing methods of strip sowing, hole sowing and spreading sowing can be used, and the most common sowing methods are strip sowing. Strip sowing method: row spacing is 25ml 30cm, shallow trench is opened (about 4mi 5min deep), seeds are evenly sowed into the ditch, covered with a thin layer of fine soil, generally, the seed consumption is 1ml / mu 1.5kg.