Field management measures of Coptis chinensis

1. Seedling replenishment: in the first 3 years after planting, seedlings should be replenished in time. Generally, the seedlings were replenished twice, the first time was in the autumn of the current year, and the second time was before the new leaves were released after snowmelt in the following year.

2. Weeding: weeding in the current year and the following year, weeding and loosening the topsoil in time, weeding 4-5 times a year, and chemical herbicides can also be used to kill weeds. 50% promethazine 150-300 grams or 25% diuron 200-300 grams per mu, or 10% herbicide 125 grams, the effect is obvious. Coptis chinensis, which was transplanted for 3-4 years, was weeded 3-4 times a year and once in the fifth year. Soil loosening should be combined with weeding in 3-5 years.

3. Topdressing and soil cultivation: irrigate seedlings with thin pig manure water or rotten vegetable cake water 2-3 days after planting, or use fine compost or about 1000 kg of barnyard manure per mu. Fertilization was applied once from September to October of that year, after seed collection in 2-5 years and from September to October in 2-4 years, for a total of 8 times. Spring topdressing uses 1000 kg of human dung water per mu or 50-100kg of rotten vegetable cake (with 1000 kg of water); you can also use 10 kg of urea and 20-30 kg of calcium phosphate to mix well with fine soil or fine compost. Autumn topdressing to farm manure-based, dual-use plant ash, cruller and other fertilizers, spread border surface, about 1 cm thick, 1500-2000 kg per mu. The upper part of the slope and the border are easy to be scoured by Rain Water. Coptis chinensis should also cultivate soil after topdressing in the autumn of 2-4 years, and sprinkle it on the border with fine humus soil. The soil is about 1 cm thick in the 2nd-3rd year. 1.5 centimeters in the fourth year. Yalian, weeding and fertilizing once in the spring of the second and third years, 100 kg of oil per mu, 2.5 kg of urea and 600 kg of fine humus soil were mixed evenly, scattered on the border and covered with soil. Except that the soil is not cultivated in the year of planting and once in spring in the year of harvest, the soil should be cultivated except weeding and loosening soil in spring and winter. About 3 cm thick. Yunlian is topdressing once every year in early summer and late autumn. In high altitude areas, 5000 kg of forest and mountain soil is applied per mu, while 250kg of plant ash is mixed and scattered on the border surface. In areas with low elevation and near the village, 1000-1500 kg of farm manure is applied per mu.

4. Remove the flower moss: except for the planting plants, the flower moss should be removed in time from the second year.

5. Shade shed management: the degree of depression in the year after planting is 80-85%. The degree of depression has decreased year by year since the second year, and decreased to 40-50% in the fourth year. After the seeds were harvested in the fifth year, the canopy was removed to increase the light. After continuous planting in the forest, the degree of depression was higher in the first and second year. Attention should be paid to thinning branches from the third year, and the degree of depression is about 50%. The roots 20-30 cm deep around the trunk should be shoveled every winter and spring. Yalian, when Frosts Descent went to the winter soil every year, put down the scaffolding (along the bar and the crossbar) and the cover materials on it, and spread the border surface in an orderly manner to cover the Coptis chinensis plant. Restore the shelves in time after the snow thaws in spring. The method and requirements of resuming the shelf are the same as that of building shed.