(i) the reproductive properties of thorium are a multi-year soybean herbal plant, which is generally 60-150 cm tall, triple-leaved, small-coloured or elliptical, velvet, seed yellow and brown, kidney, rich in a variety of nutrients, in particular coarse proteins of about 18-26 per cent, which are the main high-quality feed crops for poultry and livestock, and are therefore known as "the king of pastures". The principal roots are developed, which are distributed within 20-30 cm of soil, are resistant to drought and soil erosion, have large roots that are capable of stabilizing the evacuated nitrogen in the soil and are therefore fertile in fields. They prefer semi-arid climates, can grow and grow in areas with annual rainfall of 200 to 300 cm, can grow at temperatures of 15 to 20°c, seeds can germinate at 5 to 6°c, spring temperatures of 7 to 9°c can grow, young seedlings can stop growing at around 3°c, and they are resistant to low temperatures of 51 - 6°c, and are able to withstand low temperatures of 201 - 30°c. Zirconium is less demanding for soil, is neutral or alkaline (ph = 6. 5-8) soil, with a salt tolerance of 0. 3% for seedlings since the following are highly adaptable, salt resistant and resistant, hot calcium, well drained and deep sandy border soil, intolerant water, soil overwet and decayable roots, overdry affecting yields and quality, and 24-48 hours of impregnated water can result in death, acupuncture during the rainy season is carefully drained, and long-term accumulation of water is strictly forbidden。
(ii) cultivation sites shall be established in accordance with dbl3/310-1997, far from industrial mines, enterprises, hospitals, etc., and without sources of pollution (no contamination of water quality, no contamination of air, no contamination of soil, etc.). The luminium is broadly adaptable and subject to stringent soil requirements. It can be grown in various terrains and soils. It is most desirable to be dry, flat, well drained, deep, organically rich, moderately alkaline or sandy soil with good condensation structure. Low-lying, flood-prone plots need to be drained and salinized with a salt content of no more than 0. 3 per cent。
(iii) ground-to-ground and base-based fertilizer usel, ground-to-ground: due to the small size of the seed seed, which weighs about 2 grams of dry grains, good and poor quality of the ground directly affects the seed rate and alignment of the seedling, as well as field management and production. The specific requirements are: deep-drive, 20-30cm tillage or 15-20 cm tillage, then weeding and cleaning of the fields, the roots of the front crops, the roots, the leaves, etc., to level the ground with no scabs, no scabs, no scabs, etc., as well as to suppress the soil, defecate the tops of the ground, prevent the presence of the ground and act as a shield. 2. Use of base fertilizers: fertilizers without public hazards shall be subject to the dbl3/t454-2001 standard, with the permitted use of fertilizers such as urea, ammonium sulfur, ammonium diammonium, calcium perphosphate, phosphorus fertilizer, potassium sulphate and boron, ammonium aluminate, manganese sulphate until trace element fertilizer, prohibition of domestic waste, industrial sludge, etc., and limited use of chlorinated and nitrogen fertilizers. Aluminium fertilisation is based on base fertilisation, combined with whole floor and foot fertilizers, 2000kg-3000 kg, phosphorous fertilizers (p2o5), 9. 6-14. 4 kg (calcium phosphate 80-120kg), nitrogen fertilizers (n) 4. 6-11. 5 kg (perform urea 10-25kg) and increased potassium fertilizers (k2o) 8. 3-83 kg (perfluorosulphate 10-25kg) per acre。
(iv) varieties selection and presentation of the selection of desirable varieties for the region are the basis for production. The basic requirements for selection are to be determined by the natural climatic conditions in the cultivated areas, the manner in which the soil conditions are used and the adaptability of the species. At present, the following are the most suitable species for wide distribution in our city: chinai-1, wl 3233, wl 323mf, wl 324, queen america, queen king, saittung。
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