Ramie is one of the top ten oil crops in the world and has a high economic value. The whole body of ramie is a treasure. The stalk can suppress the building materials, and is also the raw material of papermaking and rayon. The seeds can be pressed, the oil cake can be used as a fertilizer, and can also be used as a feed after detoxification. The ramie can be cultured and the silkworm can be developed. industry. Refined castor oil can be used in aircraft, ships, automobiles and highly sophisticated lathes, and can be used as industrial raw materials for the production of spices, artificial leather and other products. In foreign countries, more than 200 kinds of fine chemical products with different uses can be extracted and derived from castor oil. At present, China has only developed more than 30 types of ramie products, mostly low-grade oil, which is a far cry from foreign countries. Every year, foreign countries import a large amount of castor powder as raw material from China, and China's current annual output of only 300,000 tons is still far from satisfying domestic demand, and the gap is large. The accession to the WTO and the market demand potential have brought good opportunities for the development of the ramie industry in China. Therefore, the development of castor industry is an effective way to help farmers achieve poverty alleviation and enrichment, and it is currently an ideal project to adjust the planting structure. 1. The selection and preparation of ramie has strong adaptability, drought tolerance, and strict requirements on production conditions. However, in order to obtain high yields, it is necessary to choose deep soil, loose texture, moderate pH, and sandy loam rich in organic matter. Ground and sticky heavy yellow earth. The castor plant is tall and has developed root system. When it is well-grounded, it must be deep-turned (if large-scale planting is required to deep-cultivate in autumn), the general cultivating depth is about 30 centimeters. 2. Fertilizer enough for fertilization requires more fertilizer and sufficient nutrients to ensure high yields. The production of 50 kg of castor bean requires 3.5 kg of pure nitrogen, 2.8 kg of phosphorus, and 3 kg of potassium. According to the fertilizer-demanding characteristics of castor, when intensively plowing the soil, 2,000 kg of high quality manure, 50 kg of ammonium bicarbonate, 20 kg of superphosphate, 15 kg of potassium sulfate, or three yuan compound fertilizer in Mushi (N:P:K) = 16:16:16) 25 kg. 3. Seed treatment in the spring when the local 5 cm soil temperature is stable above 10°C (in the middle and lower reaches of the Yangtze River in early March), select high-quality seed germination with good grain, good maturity, consistent markings, and high oil yield. The seed of ramie shell is hard and the water absorption is slow, affecting budding, and it needs to be soaked with germination. With 45 °C ~ 50 °C warm water soaking for 15 hours to 20 hours, remove and dry at 20 °C ~ 22 °C under the temperature of germination, until most of the seeds germinate or when the seed coat is broken when the white can be planted. 4. For ridge planting, the land is leveled, and the ridges are laid at a row spacing of 50 cm. After the rake is fine, the planting distance is 60 cm and the sowing depth is about 6 cm. Before sowing, 50% carbendazim WP can be used for seed dressing in 0.5% of the seed amount to prevent disease and protect seedlings. Points 2 to 3 seeds per hole, 1100 piers per mu Miao Miao ~ 1300 piers, can not exceed 1500 piers. 5. Plastic film coverage, film seedlings induced seedlings after sowing, cover the film to prevent excessive evaporation of water, warming protection, and promote seedlings early hair. Covering with plastic film, germination sowing, generally 10 days to 12 days can be seedlings, when the top soil of the seed, can be broken film cover soil seedlings. 6. Scientific management of castor seedlings after emergence and time seedlings. When the seedlings grow to three to four true leaves, they should be selected to leave the plant shape and growth of a single seedlings. In order to be able to leave branches and more results, when the ramie 6 to 7 true leaves, remove the growth point of the main stem, cultivate 3 to 4 branches, shape the ideal plant shape, and lay a good foundation for high yield. In order to improve the quality of ramie, all branches of the terminal buds can be removed in early September. For fields with insufficient fertilizer application, 30 kg to 40 kg of cake fertilizer may be applied to water before the flower is applied, or 15 kg to 20 kg of urea may be applied before rainfall or watering. If it is found to be harmful to Heliothis ormorum, cotton bollworm, spray control. In the early stage of the damage of the ramie blight and leaf spot disease, the control effect of 1:800 dilution of Bordeaux mixture or 50% of carbendazim wettable powder was 800-1000 times. 7. Harvesting of ramie fruit is inconsistent. When the color of the peel becomes brown, follow it. After the "frost," pull out the drying plant, and promptly dry and thresh after harvest. The average yield per mu can reach 250 kg to 300 kg.
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