Coptis is one of the precious Chinese herbal medicines. In recent years, the technology of "cultivating Coptis chinensis under the forest" has saved labor and material resources compared to scaffolding cultivation methods, saving investment, low labor intensity, and high economic efficiency. The specific method is:
First, choose a good woodland
We must choose woodland with greater shade. Natural forest species are ideal for deciduous trees that do not fall all year round. Dwarf trees with a height of about 3.3 meters are appropriate. Artificial fir forests are crowned with consecutive crowns, and the height of trees is 3.3 meters. degree. The slope is between 20-25. It is better to choose the soil with deep humus, rich in organic matter, and upper Panasonic soil. It is not appropriate to select heavy yellow mud and white mud soil.
Second, finishing arbours
For natural forests, all dead branches, small trees and thatch in the forest should be cut off, shrubs and dwarf trees left, and the twigs less than 2 meters away from the ground should be repaired. The shade degree should be kept between 70% and 80%. For artificially cultivated Chinese fir forests, young forests should be selected, and the branches can be basically connected. If there are sunroofs in some places, just use branches to be inserted around the Coptis to provide shade.
Third, do the earthwork
Before the preparation of the site, the stubble, deciduous, and rock blocks on the topsoil were pulled out of the forest with wooden rakes. The bamboo roots, small tree roots, and thatch grass roots in the forest must be removed. Attention should be paid to the tree roots when they are dug. Dig deep. For artificially cultivated fir forests, as long as they are dug once, weeds and weeds should be removed. Soil around the trees must be soiled and the roots must not be exposed. The next step is to open the ditch and open the ditch from top to bottom. The ditch is 23 centimeters wide and 10 centimeters deep. The mud at the bottom of the ditch is placed on both sides.
Under the forest, the seedlings of Coptis chinensis should be selected from 12-year-old biennial seedlings. Transplanting time, if evergreens and coniferous forests, can be transplanted during the Ching Ming Festival; in broad-leaved forests, leaves are planted after new leaves are grown.
V. Field Management
1. Weeding and dressing: weeds remain no weeds, so that in addition to early addition to small. The first year and the second year after planting were dominated by nitrogen fertilizer, and phosphorus and potassium were the main components in the later period.
2. Earth mud: When the Coptis survival, after every 667 square meters with a cake of fertilizer 25 kilograms of mixed smoke with a thin layer of firewood sprinkled on the surface, combined with the application of cattle and manure in the fall and sprinkle some fine soil in the noodles In the next few years each summer and fall, depending on the situation, a layer of mud soil.
3. Pick litter: Every autumn and spring, the fallen leaves are carefully hand-picked into the middle of the row of yellow lines, and a little soil is scattered on top.
4. Cutting cuttings: The first year after planting Huanglian requires only 20% to 25% light transmission, the second and third years require 35% to 40% light transmission, and the fourth year of light transmission needs to increase to about 60%. All the bright sheds in the year will promote the accumulation of underground dry matter, which will require annual cutting. In the first two or three years, the removal of some branches will not affect the growth of trees. In the fourth year, the number of cuttings will increase, and the natural forest will be taken to shoot some leaves or tied up with canes to increase the transparency of the forest. . Artificially cultivated Cunninghamia lanceolata forests can be appropriately thinned and cut according to the forestry technical regulations, combined with the growth status of Cunninghamia lanceolata forest, and the thinning time should be carried out when the forests stop growing and Coptis has not yet sprouted. Generally, it is appropriate to conduct it in winter.
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