Amaranth is a perennial herb of the Saururaceae family. Because the whole plant has the smell of fish, it is also called Houttuynia. Houttuynia cordata is distributed wildly in the Yangtze River basin and the provinces south of China. Houttuynia cordata has high medicinal value and edible value, and its plants grow robustly and have strong resistance to diseases and insect pests. It does not need pest control in production and cultivation and can be protected from drug pollution. It is pollution-free. Medicines and vegetables are also used as plants, which have broad prospects for the development and utilization of green, pollution-free health-care vegetables. Houttuynia cordata is mainly eaten as stem vegetable leaves and underground stems for vegetables, and whole plants can be used freshly or dried as medicine. Houttuynia is a perennial herbaceous plant that is sexually warm and humid. It grows in a variety of soils. It is most prosperous with loose and fertile neutral or slightly acidic sandy soils (or sandy loam). It is frosty and resistant to drought. Water blisters, strong negative resistance. Due to over-collection, wild leek resources are currently under serious destruction. In order to protect wild resources, we must actively develop and use artificial family introduction and cultivation. Houttuynia cordifolia often uses underground stems (about 6-10 cm long) or rooted seedlings to grow and cultivate. It can be cultivated all year round. Winter and early spring should be paid attention to antifreeze insulation. Summer and early fall should be paid attention to shade moisturizing. The planting of Houttuynia should be selected from natural shading (half-yin and yang), irrigation and irrigation, soil looseness and fertility, and moist cultivation of water. After the harvest of the former crop, the soil is 25-30 cm deep, 5000-6000 kg per hectare of anaerobic fertilizer, 50 kg of NPK fertilizer, and 40-50 kg of cake fertilizer are used as base fertilizer. The sorghum or sorghum with a width of about 150 cm in width is planted with 30-408-10 cm planting stems (underground stems) or planting strong seedlings. Can also be used high ridge cultivation, ridge width of 40 cm or so, each ridge buried planting stems (or planting seedlings) 2 lines, line spacing 25-305-8 cm. After the planting, the dry season should be watered timely, and the rainy season should be drained in time, avoiding long-term accumulation of water in the fields. After half a month of planting, a thin, decomposed human or animal manure or biogas fermentation fertilizer and appropriate amounts of phosphorus and potassium fertilizers are applied every two weeks or so. Field weeds should be promptly removed, timely shallow-medium tillage soil, combined with loose soil in the spacing between the rows spread appropriate amount of organic fertilizer. Houttuynia cordata can also be interplanted with crops such as pepper, eggplant, tomato, kidney bean, corn, sugarcane, and tobacco, or cultivated in the open space behind the house, or in pots, basins, barrels, jars, and other containers. After Houttuynia is planted, the shoots and leaves can be picked when the seedling height is 8-10 cm, and then harvested every 10-20 days. The tender stems and leaves picked can be freshly marketed, or they can be dried after being marketed. After half a year of planting underground stems, they can be excavated and harvested according to market needs, and impurities can be removed after washing. The underground stems reserved for use can be used with mining. Houttuynia whole plant can be used for medicinal purposes, can be harvested at any time, washed, dried or stored on the market.
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