Fine tubes for planting good Angelica dahurica

"Bangzhi has strict requirements on the sowing period. Autumn sowing is ***, usually from early September to late October. It is necessary to master the corresponding cultivation management and protection techniques to achieve fine management." August 19, In Tiantai Village, Fengle Town, Naxi District, Luzhou City, Liu Jiyong, the first secretary of the village, explained the high-yield cultivation and management technology of Angelica dahurica to the members of the village team.

It is better to choose the sandy loam with high dry terrain, deep soil layer, loose and fertile, and good drainage. After the previous season's crops are harvested, the soil should be plowed more than 30 cm deep, and after a few days of exposure, plow and plow again. Combined with land preparation, 2500 kilograms of compost per mu is applied and turned into the soil as base fertilizer. Then, the flattening rake is finely made into a high border, and the border surface is connected into a turtle-back shape, and the top soil layer is required to be loose and finely broken.

Sowing at the right time and sowing too early, Angelica dahurica has grown too vigorously that year, and most of the plants bolted and bloomed in the second year, which made the root hollow and rotted and could not be used for medicinal purposes; too late, the seedlings were unearthed and were vulnerable to freezing damage. Timely sowing is the key to high yield of Angelica dahurica. Angelica dahurica is propagated by seed, which can be drilled, drilled, or broadcasted.

Thinning and weeding Angelica Angelica seedlings grow slowly. The seedlings are generally not thinned in the first year of sowing. After returning to green in the early spring of the second year, thinning is carried out when the seedlings are about 6 cm high, and thin and thin seedlings are thinned. The plant spacing is 13-15 cm, with 3 plants in each hole, staggered in a triangle shape to facilitate ventilation and light transmission. When setting the seedlings, the large seedlings that have grown too vigorously and the petioles are blue and white should be pulled out to prevent early bolting and flowering. Combine thinning and fixed seedlings to carry out intertillage and weeding at the same time. Weeding at the seedling stage should be done by hand or shallow hoe.

Scientific top dressing Scientific fertilization is the key to improving the yield and quality of Angelica dahurica. Too much fertilization and excessive growth can easily cause bolting and flowering and reduce yield; insufficient fertilization and poor growth. In general, apply less or no application before spring to prevent excessive growth in the seedling period and bolting and flowering in advance. After spring, vegetative growth begins to be vigorous, and top dressing can be applied 3-4 times. The types of fertilizers can be human waste, decomposed cake fertilizer, ring fertilizer, urea, etc. Phosphorus and potassium fertilizers can be applied once before closing the ridges to promote thick roots.

The number of topdressing and the amount of fertilizer applied each time can be determined according to the growth of the plant. If the color of the leaves of the plant is light green when the ridge is about to be closed, it can be topdressed again, or the leaves are dark green and the growth is vigorous. Up.

After the soil is dry after sowing, it should be irrigated in time to keep the soil moist to facilitate the emergence of seedlings. During the growth period, if the weather is dry, water should be timely to ensure the plant growth needs; when there is too much rain or water in the field, drainage should be timely to remove waterlogging to prevent disease or root rot.

Diseases and pests prevention and control of Angelica dahurica diseases occur rarely, and sometimes gray spot disease and spot blight occur. In order to reduce the source of diseases, organic fertilizers should be added to improve soil and enhance disease resistance. Spot blight can be sprayed with 1:1:100 Bordeaux mixture or with 65% Zinc WP 400-500 times solution. The pests of Angelica dahurica are mainly at the seedling and flowering stage. Aphids, heartworms and yellow swallowtails commonly eat up leaves or flowers, which affect plant development and fruit maturity. Heartworms bite the seeds, and in severe cases can cause seed failure. The larvae can be killed manually or sprayed with 90% trichlorfon 800 times solution.

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