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(1) Temperature, hi cold and cool climate, can grow between 8-32°C, suitable temperature is 15-22°C, slower than 6°C or higher than 32°C. Winter can be achieved at temperatures of -8 to -2°C.
(2) Water, Coptis is a wet plant, hi humid, intolerant of drought. During the seedling stage and transplanting period, the surface soil is arid, which affects the growth and reduces the survival rate. During the growth period, it requires plenty of rain and high humidity. Although weeping and humid, when the soil moisture is too high or water is accumulated, it is poorly ventilated and susceptible to disease, affecting the normal growth of roots, making the roots dark and even dead.
(3) Light, Coptis chinensis is a negative plant, hi light and scattered light, afraid of strong light, the seedlings encounter a strong light burns to death. However, it is too shady, the leaves grow wild and the underground rhizome yield is low. Coptis also gradually increases its demand for light with increasing seedling age. In general, the plant is planted on a shelf or natural trees are used to adjust the light, so that scattered light of 7 yin and 3 yang can be achieved. As the seedling age increases, the light gradually increases.
(4) The topography and soil fertility are locally cultivated in the range of 700-1500 meters. Planting Coptidis Rhizoma in the low-altitude mountain area is characterized by high temperature, rapid growth, leafy foliage, poor rhizomes, poor quality, and easy infection. Coptis requires a deep, loose, fertile, well-drained and well-breathed loam with a surface rich in humus. Heavy loam and sandy loam can also be used. Coarse sand and viscous heavy soil should not be planted with Coptis. Soil pH is preferably slightly acidic to neutral. Avoid continuous works. After planting Coptis for two to three years, the land can continue to be planted. Otherwise, the output is low and the disease is serious. Coptis fertilizer, basal fertilizer and topdressing mainly farmyard manure. Fast-acting organic fertilizers and fertilizers are used as top dressings after spring and seed harvesting. Nitrogen fertilizer has a great effect on pulsing seedlings. Phosphorus and potassium fertilizers have a great effect on improving the seed setting rate and the enrichment of rhizomes.
Second, colonization management in accordance with the "7 yin yang" of the sub-light demand or scaffolding or shade net or interplanting, pull the election soil loose, fertile loam, sandy loam raw wasteland or planted ripe land. Intensive cultivating and fine-graining planted noodles, then transplanting. Every year from March to March, May to June and September to October, planting can be transplanted. The survival rate of the three-year-old Coptis chinensis seedlings transplanted between March and May was high, and the growth was rapid. After the cloudy days or after the rain is selected, the seedlings transplanted should have more than 4 true leaves with a plant height of 6 cm or more. Uprooted even seedlings, 100 bundles cut off long fibrous roots, leaving about 2-3 cm long, wash the soil, put in the basket. Each load of 8-12 million seedlings. After the planting, timely cultivation and weeding should be carried out. In the past 30 years, local farmers and farmers have concluded a complete set of weed control technology to ensure low-cost and pollution-free production. The lack of seedlings was found, such as the spring planting in the autumn to make up the seedlings, and the autumn planting in the spring of the thawing year after the thawing to make up the seedlings. Using the same age strong seedlings with soil supplement. It is necessary to make fertilizer and soil in a timely manner. In addition to applying base fertilizer, top dressing is performed every year. The early seedlings can be topdressed with nitrogenous fertilizers, and the latter are mainly phosphorus and potash fertilizers, such as: over calcium, potassium sulfate, oil cakes and so on. The rhizomes have the characteristics of upward growth, and they need to be cultivated every year, first thin and thick, and increase year by year. To adjust the shade. In the year of transplanting, 70% shade is needed. With the increase of seedling age, light is increased year by year to reduce shading; shading is reduced by about 10% from the second year; shading is reduced to 40% to 50% in the fourth year; The shading degree was 20% to 30% before June, and the cover could be removed after 6 months to increase light. The forest is planted to regulate light through pruning. To remove flower buds. In addition to the remaining fields, if found in the timely removal of Coptis.
Coptis planting technology
First, the growth environment of Coptis is a high altitude shade plant, suitable for cool, rainy areas in the mountains.