How do ramie cultivation techniques produce high yields? Ramie is also known as cannabis, old numb, grass and hemp. It is an annual or perennial herb of the genus Euphorbia. It is a perennial shrub or small tree in the tropics or the south. It is native to Egypt, Ethiopia and India. After spread to Brazil, Thailand, Argentina, the United States and other countries, China's ramie was introduced from India, let's take a look at the high-yield planting technology of ramie! The adaptability of the selected land ramie is very strong, and all kinds of soil can be planted. It can be planted by the side of the ditch and the space behind the house, or it can be planted in the barren hills. In the case of planting, the soil is turned over 4 to 6 weeks before sowing, and the soil is matured. The sporadic planting is also turned over in advance and dug into a hole of 35 cm deep and wide. Because the nettle is afraid of water stains, if it is planted in low-lying land, it is necessary to change the land into a platform beforehand, and open a drainage ditch between the blocks. Ramie is planted in the wasteland, and the slope is changed into a belt-shaped ladder to keep the water and soil from being lost and easy to manage and harvest. Slopes with a slope of 25 degrees or more are suitable for planting. Seed treatment 1. Seed selection: Before harvesting, choose the castor plants with strong growth, many branches, early results, and more fruits. The fruits with the most mature and mature results are collected, placed in the sun for drying and threshing, dried and loaded. In baskets or bags, keep them in a dry and ventilated place, but it is best to go to research and production units to purchase excellent hybrids. 2, soaking seeds and germination: seeds before sowing with 40 ~ 50 ° C warm water soaked seeds for 24 hours, then fished out, buried in the wet sand, the seeds generally take 5 to 7 days to germinate, can be immediately planted after germination. If you want to soak the seeds in warm water for 48 hours, the hard shell will be softened, and the seeds will absorb enough water to speed up the germination speed of the seeds. After soaking the seeds, they can be germinated in time, and when some seeds are exposed, they can be germinated. sowing. Fine seeding 1. Sowing time: Castor is generally sown in “scars†to “lixiaâ€. Some provinces in South China and Southwest China planted earlier. Some provinces in East China and North China generally last from April to May. Some provinces in the southwest can be planted in spring, summer and autumn, and tropical areas in southern China can be planted in winter. 2, seeding method: Castor ramie seeding methods are live and transplanted. Live seed 2 to 3 seeds per litter, the grain spacing is 3 to 5 cm, and the cover is 2 to 3 cm thick. For transplanting, it is necessary to choose leeward sun, convenient water source, fertile loam or sandy loam soil, carry out deep fertilization and leveling, make a seedbed with a width of 1 meter, and then plant, water and cover. 3. Transplanting in time: When the castor seedlings are excavated with 3 to 4 true leaves, they can be transplanted with mud. After planting, root water should be poured, and water should be watered every 3 to 5 days until it is alive. The density is generally planted in a square of 1.7 to 2 meters. About 160 plants are planted in acre, and the perennial ramie can be slightly denser. It is suitable to plant 200 to 250 plants per mu. Planting on steep slopes and gentle slopes may also be slightly more compact. Field management 1. Reasonable fertilization: Ramie has strong absorption capacity. In the early stage, it needs more nitrogen fertilizer. After flowering, it is mainly applied with phosphorus and potassium fertilizer. Therefore, mixed plant ash or mixed fertilizer should be used as base fertilizer. Large-scale planting can be carried out by ditching or fertilizing, or applying two composts in each litter to cover the soil and then sowing. Sporadic planting can be applied to the hole. After sowing, the grass and ash are mixed with fine soil to cover the nest, and the thin man and animal excrement are applied when the seedling is fixed. If planted in open wasteland, soybeans and peanuts can be planted between the castor lines after emergence. 2, between the seedlings and soil: when the castor seedlings are 10 cm high, carry out the seedlings, remove the dense and weak seedlings, and combine the cultivating and weeding once. When the seedling height is 17-20 cm, the seedlings can be fixed, and one seedling is selected for each well, and the second cultivating and weeding is carried out. Planting on the barren hillside can delay some of the seedlings. The third cultivating and weeding can be carried out before flowering. When the seedling height is 30 cm, the combination of cultivating and cultivating the soil will fix the roots and play a role in drought resistance, wind resistance and lodging resistance. 3, topping the top: when the ramie grows 7 to 8 true leaves, topping, after the growth of the numbness, the tops of each branch can be cut again to promote branching to increase yield. . At the same time, the plants are dwarfed and easy to pick fruit. When the plant grows to 55-60 cm, pruning is carried out, and the dry branches and the pests are cut off to promote the multi-pumping technique and the spread of pests and diseases. After pruning, it is necessary to topdress in time, and when it is dry, it is necessary to pay close attention to watering and drought. 4, winter management: perennial ramie harvest should pay attention to winter protection work, frost and snow in the larger area before the frost, the straw will be used to wrap the ramie pole, the year after the spring to remove. For the branches or main stems that have been frozen, they can be sawn off 35 cm from the ground, and the slashes are pasteted with cow dung. After the spring, the main pile can be re-germinated. In areas with severe frost damage, saw the main stem before frost-reducing, leave 20 to 30 cm of pile from the ground, and paste the slash on the cow dung, and then seal the ramie pile with mud, in the spring or when there is no snowfall. When the soil is opened, it can germinate and grow. 5, pest control: The main pest of castor is a small tiger, which is unearthed at night to eat and bite the seedlings. Therefore, in the early morning, the topsoil around the rhizosphere of the bitten seedlings can be opened and killed, or poisoned by bait. The disease mainly includes sclerotinia sclerotiorum and white powder. Once it occurs, it is necessary to remove the diseased plant in time, burned or buried and cleared the pathogen. It can be sprayed with 25% powder rusting 1000 times solution, sprayed once every 7 to 10 days, continuously spraying 2~3. Second, or with a 1:120 times Bordeaux spray. 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