First, choose sandy loam or loam with deep and fertile soil layer and good drainage. Except all shrubs and weeds, fully cultivate 25 ~ 30cm deep or not. According to the row spacing of 3m×3m, 60 ~ 90 plants are planted per mu, and the hole size depends on the plant size. Generally, the hole diameter is 50cm, and the depth is 40cm. Each hole is applied with 5 ~ Lokg of decomposed manure or compost, which is mixed with the hole soil to make the base fertilizer. Nursery land requires fertile and loose soil, deep ploughing and harrowing, making the border high and wide 1 .3m. 2. Propagation method (1) Cultivated varieties can be divided into three varieties according to fruit shape and plant shape. Rice pepper pepper: the internodes of plants are short, and the mustard oil in leaves has a strong smell; Small fruit, many fruits, high yield per plant and good quality. Big pepper: the internodes are long, and the mustard oil taste of leaves is slightly lighter than that of rice pepper; The fruit is larger, and the yield and quality are slightly lower than that of rice pepper. Chili pepper flower (snakeskin pepper): the nodes are long, and the mustard oil in the leaves has a faint fragrance; Large fruits, many flowers, few fruits, low yield and poor quality. (II) Propagation Technology The germination rate of Evodia rutaecarpa seeds is low, and seed propagation is generally not used in production, and most of them adopt asexual propagation. 1, Evodia rutaecarpa has strong tillering ability, and many seedlings are often cut around the mother plant. When the seedlings grow to about 60 cm, dig them out and transplant them. In order to obtain more tillering seedlings, select excellent mother plants that are 3-5 years old, robust, disease-free, high-yield and high-quality. After defoliation in winter and before germination in early spring, cut the soil at a distance of 40- 100 cm to expose the lateral roots, select the lateral roots with a diameter of about 3cm, and cut them every 10- 15 cm. After 1 ~ 2 months, many seedlings will germinate in the damaged roots. Remove the seedlings that are too dense and weak, lightly apply human and animal manure once, and when the height of the seedlings is about 50cm in the next spring, the seedlings can be cut and transplanted. Usually a mother tree can get 30 ~ 50 tillers, and the survival rate of transplanting is high. 2. Cuttings can be propagated by cuttings, root cuttings and belt cuttings. Branching takes place in the dormant period of late winter and early spring. Select robust mother plants, collect 1 ~ 2-year-old branches and cut them into cuttings with a length of 20~25cm. Each cutting must have 2 ~ 3 bud holes, with the upper end truncated and the lower end cut into inclined planes. Choose cloudy days, open a horizontal ditch on the cutting bed with a row spacing of 30cm, place the cutting obliquely in the ditch according to the plant spacing lOcm, cover the soil, compact and water it. When cutting, it is advisable to dig out about 10 cm at the tip of the cutting. Sprinkle straw knots, dead branches and pine leaves on the edge of the border to keep the soil temperature, or use arched plastic film to keep warm and moist. After rooting, it can be cultivated for 1 year, and then planted in the nursery. When cutting roots, choose healthy plants that have been over 4 years. Dig the roots in early spring and February, take out the lateral roots of lcm, cut into cuttings of about 20cm, and put them on the seedbed to keep moisture in the shade. In the wound caused by cutting roots with twigs and stems or dividing plants with injured roots, seedlings often cluster buds. If allowed to grow, the seedlings will become weak and thin. Therefore, when the seedling height is about lOcm, choose cloudy days, except for 2-3 seedlings in each cluster, peel off the rest seedlings with a knife, divide them into individual plants, cut off the basal leaves, punch holes in the seedbed according to the row spacing of 20cm, water them, and cover them with arched plastic films for shade and moisture retention. 3, layering propagation In early spring February, select 2-3-year-old seedlings from the roots around the mother plant, peel off a finger-wide epidermis at its nodes with a knife, and bury it in the soil for 5- 10 cm, so that the tips of the branches are exposed to the soil surface. A seedling can germinate every day and can be cut and transplanted the next year. 3. The above propagation materials can be planted after defoliation in winter and before germination in spring, especially in early spring. Transplanting and planting in blocks, and opening holes for planting according to the row spacing of 3m×3m; If you plant plants in the gap between the front and back of the house, you can plant them every 2 meters, cover half of the soil when transplanting, gently pull up the seedlings to facilitate the extension of the root system, and then cover the soil for compaction. Immediately after planting, thoroughly irrigate the root water to facilitate survival. Fourth, field management (a) intertillage weeding Evodia rutaecarpa is not tolerant of desolation, and intertillage weeding should be carried out in time to make the field free of weeds. It should not be too deep during intertillage, so as not to damage the root system and make the topsoil loose and not hardened. (2) topdressing before germination in early spring, and topdressing with human and animal manure to promote the growth of spring shoots. Generally, 20 kg is applied to each 3-year-old young tree in a furrow 40 cm away from the rhizosphere. Before flowering and fruiting in June-July, apply phosphorus and potassium fertilizer to promote fruit setting. After defoliation in winter, apply farmyard manure or plant ash, and then cultivate the soil to prevent freezing. (3) Pruning and shaping The shaping and pruning of Evodia rutaecarpa should depend on the natural conditions of plant growth. Generally, the central trunk with obvious growth and vigorous growth adopts the shape of evacuation and stratification; Without a central trunk, it takes the shape of natural happiness. Pruning is usually done in winter. By pruning and shaping, a certain tree shape can be maintained, which is beneficial to flowering and fruiting, reducing the occurrence of diseases and insect pests, obtaining some branches and increasing propagation materials. When pruning, the diseased branches, weak branches, drooping branches and combined branches should be cut off at the same time, leaving branches with large tops and oval buds. (4) Intercropping with other medicinal plants or crops is feasible in the case of intercropping in pieces. Such as pyrethrum, chrysanthemum, motherwort, codonopsis pilosula, platycodon grandiflorum, houttuynia cordata, vegetables and beans. Fourth, pest control (a) rust diet. From May to July, it mainly harms leaves. At the early stage of the disease, yellow-green spots with inconspicuous edges appeared on the leaves, and orange-yellow protruding sores (summer spore piles) appeared on the back of the leaves in the later stage, and the leaves died in severe cases. Prevention and treatment methods: At the initial stage of the disease, Bomei 0.2 ~ 0.3 degree sulfur mixed solution or 65% zineb wettable powder 500 times solution, or 97% diclofenac sodium 300 times solution (with washing powder 150g) was sprayed for prevention and treatment. (2) Bituminous coal disease. It is a layer of dark brown coal, covering the leaves and branches. When aphids and scale insects harm Evodia rutaecarpa, the sweet secretion secreted by aphids often induces the disease. Coal is easy to peel, but the leaves are still green after peeling. When the disease is serious, it affects photosynthesis. Control methods: control aphids and prevent diseases. When aphids and scale insects occur from early May to mid-June, 40% dimethoate EC 1000 ~ 1500 times can be sprayed to control aphids. At the initial stage of the disease, it was treated with 1: 0.5: 150 ~ 200 bordeaux solution, every 10 day/kloc-0 times, 2 ~ 3 times in a row. (3) Nadella Cantori h () PE. Larvae gnaw at the trunk and xylem, forming irregular curved channels. From July to 10, colloidal secretions, sawdust and insect droppings are often found on the trunk. Prevention and control methods: from May to July, the adults are killed artificially in the peak period; After eating the trunk, the larvae were stabbed to death from the wormhole with steel wires; Or dip the cotton ball into the wormhole with 40% dimethoate EC, seal it with yellow mud and kill it. (4) Aphids harm new shoots and young leaves, suck juice and affect growth. Control method: spray 40% dimethoate EC 800 ~ 1500 times. (5) Ceroplastas rabens Mesk。 Red wax scale, which occurs all year round, mostly gathers on branches, leaves, flowers and fruits, making the damaged leaves yellow, falling leaves, flowers and fruits. Control method: spray 40% dimethoate EC 800 ~ 1500 times; Or brush the trunk with sulfur mixture before the leaves germinate in spring; Or manually scrape it off. (6) Papilio occurs in May to June or August to September. Larvae bite bud leaves, resulting in insufficient carving. Prevention and control methods: artificial killing; Or spray 90% crystal trichlorfon 1000 times in larval stage. Harvest, processing and storage at the place of origin. Harvest usually begins 2-3 years after planting. From August to 65438+ 10, when the fruit changes from green to yellow-green or purplish, pick it in sunny morning. When picking, pick (cut) the fruits in a string, and be careful not to damage the branches, so as not to affect the fruits of the next year. Each plant can produce 5 ~ 20 kilograms of fresh fruit. Second, spread the processed fruits in time after harvest, and don't pile them up for fermentation. It can be completely dried after continuous drying for about 7-8 days. It can be dried with small fire in rainy days (the temperature does not exceed 60℃). After air drying, the fruit is separated from the fruit stalk by friction, and the fruit stalk is screened out. The drying rate is about 30%. 3. Store the dried Evodia rutaecarpa in a plastic bag in a wooden box or bamboo basket, and place it in a ventilated and dry place, and pay attention to moisture-proof, mildew-proof and moth-proof to prevent the loss of volatile oil. Quality requirements: Evodia rutaecarpa is dry, with full seeds, solid fragrance, no branches, no impurities and no mildew. It is best to have a green color and a strong aroma. Evodia rutaecarpa is a traditional Chinese medicine, which was first seen in Shennong Herbal Classic. Modern research shows that Evodia rutaecarpa contains evodiamine, evodiamine, volatile oil and fatty acid, which has the functions of exciting the central nervous system, lowering blood pressure, contracting uterus, expelling flatulence, invigorating stomach and relieving pain, inhibiting bacteria, killing insects and resisting virus. Can be used for treating hypertension, dysentery, dyspepsia, oral ulcer, thrush, parotitis, dysmenorrhea, various dampness, neurodermatitis and other diseases.