Cultivation methods of houttuynia cordata

Rabdosia angustifolia is a perennial herb of Tripterygiaceae. Because the whole plant of Houttuynia cordata has the smell of fish, it is also called Houttuynia cordata. Houttuynia cordata Thunb is widely distributed in the Yangtze River Basin and other provinces in the south of China. Houttuynia cordata Thunb has high medicinal and edible value, and its plant growth is robust, and its resistance to diseases and insect pests is extremely strong. It does not need pest control in production and cultivation, and can be protected from drug pollution. It is a kind of pollution-free plant for both medicine and vegetable. As a green pollution-free health care vegetable, it has a broad development prospect.

Houttuynia cordata Thunb mainly uses tender stems and leaves and underground stems as vegetables, and the whole plant can be used fresh or dried as medicine.

Houttuynia cordata Thunb is a perennial root herb, which likes warm and humid environment and can grow in all kinds of soil. Houttuynia cordata Thunb grows most vigorously in loose and fertile neutral or slightly acidic sandy soil (or sandy loam), is afraid of frost, is not tolerant to drought and waterlogging, and has strong negative tolerance. Due to excessive collection, the wild resources of Artemisia angustifolia are seriously destroyed. in order to protect the wild resources, we should actively develop and utilize and carry out artificial introduction and cultivation.

Herba Rehmanniae is often propagated and cultivated with underground stems (about 6mur10 cm long) or strong seedlings with roots, which can be carried out all the year round. Attention should be paid to anti-freezing and heat preservation in winter and early spring, and sun shading and moisturizing in summer and early autumn.

The cultivation of Houttuynia cordata Thunb should be cultivated in fields with natural shade (half shade and half yang), convenient drainage and irrigation, loose and fertile soil and moist water conservation. After the previous crop was harvested, the soil was turned to a depth of 25m ~ 30cm, and 5000 kg of mature fertilizer, 50kg of N, P and K compound fertilizer and 40kg of cake fertilizer were applied per mu as base fertilizer. After ploughing and raking the soil, a high or flat border with a width of about 150 cm was made. On the border surface, the stems (underground stems) were planted or strong seedlings were planted according to the row spacing of 40 × 8 ~ 10 cm. It can also be cultivated with high ridge, the width of the ridge is about 40 cm, 2 rows of stems (or strong seedlings) are planted in each ridge, and the distance between rows and plants is 25 ~ 30 × 5 ~ 8 cm.

After planting, water should be irrigated in the dry season and drained in time in the rainy season to avoid stagnant water in the field for a long time. After planting for half a month, thin and rotten human and animal manure, urine or biogas fermented fertilizer and appropriate amount of phosphorus and potassium fertilizer were applied every 2 weeks or so. Weeds in the field should be cleared in time, shallow ploughing and loosening soil should be carried out in time, and appropriate amount of mature organic fertilizer should be sprinkled between rows combined with loose soil.

Houttuynia cordata can also be interplanted with chili, eggplant, tomato, bean, corn, sugar cane, tobacco and other crops, can also be cultivated in the open space in front and back of the house, or can be cultivated in containers such as flowerpots, pots, buckets, vats and so on.

After the planting of Houttuynia cordata Thunb, the tender stems and leaves can be picked when the seedling height is 8mi 10cm, and then it can be harvested every 10m every 20 days. The picked tender stems and leaves can be listed while fresh or dried in the sun. After half a year of planting, the underground stem can be dug in time according to the needs of the market, washed and removed impurities, while fresh on the market or used for flooding processing. The underground stem reserved for seed can be picked at any time. The whole herb of Houttuynia cordata can be used as medicine, can be harvested at any time, washed, dried, stored or put on the market.