The latest course of planting techniques and methods of Radix scrophulariae

Scrophularia is also called Yuanshen, Heishen, Zhejiang Scrophularia, etc., a Chinese specialty. It is a tall herb belonging to Scrophularia of Scrophulariaceae. It is mainly produced in Zhejiang, Sichuan, Hubei, Guizhou, Hunan, Jiangxi and other places. Its medicinal value is very high. It has the effects of clearing heat and cooling blood, nourishing yin and reducing fire, detoxifying and dispersing. Let's take a look at the planting technology of Scrophularia together!

Growth Habits of Scrophularia

Scrophularia figwort has strong adaptability, likes warm and humid climate, can be planted in cold and drought resistant places with good drainage, likes fertile humus soil and sandy soil, clay and low-lying land are not suitable for planting, avoid continuous cropping, and can only be planted every 3 to 4 years. Wild Scrophularia is mainly distributed in Yunnan, Sichuan, Guizhou, Hubei, Guangxi, Anhui and other places, while domestic Scrophularia is mainly distributed in Zhejiang, Sichuan, Hunan, Hubei, Guizhou, Hebei, Shaanxi, Shandong, Henan, Shanxi and other places.

Reproductive techniques of figwort

1. Land selection and preparation: select deep sandy loam soil layer, plant on barren hills and sunny slopes, and the previous crops of legumes and gramineae are good. Scrophularia root deep into the soil, fertilizer absorption capacity is strong, so it needs deep ploughing, apply sufficient base fertilizer, 75000 kg/ha, after fine harrowing flat again 25 cm high, bottom width 45~60 cm, top width about 30 cm high ridge, using border cultivation, ridge width about 120 cm, length depends on terrain and seed quantity.

2. Propagation method: Radix Scrophulariae generally adopts seed bud propagation in production, and selects disease-free, healthy and white seed buds when harvesting. Winter planting is adopted in the south, and it is planted from mid-December to mid-January of the following year. According to row spacing 40~50 cm, plant spacing 34~40 cm, hole depth 8~10 cm, each hole put a bud, bud upward. Spring planting is dominant in the north and is planted from late February to early April.

Field Management of Scrophularia

1. Intertillage and weeding: When figwort sprouts, remove the grass. It is not easy to loosen the soil too deep when weeding, so as to avoid damaging the root block. After June, the plants have grown up and there is no need to loosen them. If there is grass, pull it out.

2, timely topdressing: radix scrophulariae in the ridge before the first or second phosphorus, potassium-based, and apply some manure or compost, in the plant next to the small hole or furrow application, covering the soil, root cultivation.

3. Reasonable thinning: In the second year after figwort planting, many seedlings will grow from the roots, so that the newspaper will expand, increase the yield, and remove the redundant strains in time, leaving only 2~3 plants.

4. Timely topping: Scrophularia root will sprout when it grows to a certain extent. If it is harvested as a commodity, it will not be used as seed. When the flower sprouts sprout, it will be removed in time to concentrate nutrients in the root tuber.

5. Watering and drainage: Radix Scrophulariae is more drought-tolerant and not waterlogging tolerant. When the drought is particularly severe, water should be poured properly to make the soil moist, but it is not easy to flood. When it rains and ponding in rainy season, it should be drained in time.

Control of diseases and insect pests of figwort

1. Spot blight

[Hazard] The rainy season is more serious, and it occurs generally in the north and south. At the beginning of the disease, purple brown spots appear on the leaves. The center is slightly depressed, and the disease spots expand into polygonal, circular or irregular shapes. The large lesion was grayish brown, separated into a network by veins, surrounded by purple-brown angular prominent wide ring, and scattered with many small black spots. Heavy leaves die.

[Control] ① Clean the garden after harvest and eliminate the sick plants.② Strengthen field management, pay attention to drainage and ventilation. 3. Spray 1:1:100 Bordeaux mixture or 65% Zineb 500 times solution every 7~10 days for several times before and at the beginning of the disease.

2, white silk disease

[Harm] Harm roots and rhizomes, easy to get this disease in the south, from June to September onset, rain for a long time serious. Root rot, diseased roots and rhizosphere soil covered with white silky hyphae, and bearing light yellow to brown rapeseed small sclerotia. Mycelia and sclerotia can spread to the main stem. The diseased plants wilted and died rapidly.

[Control] ① Rotation with gramineous crops, avoid continuous cropping.② Strengthen field management, pay attention to drainage and ventilation. Rainy areas should be planted with high ridges. (3) Remove diseased plants in time, remove soil from diseased acupoints, and remove lime to seal diseased acupoints. 4. Before planting, use 50% degerminant 1000 times vacuole for 5 minutes and plant in air.

3. Ground tiger

[Harm] Harm the roots and buds of Scrophularia.

[Control] 100g of 2% methomyl emulsifiable concentrate can be diluted with 1kg of water, then sprayed on 100kg of fresh grass or chopped vegetables (about 16cm long), mixed into poison bait, stacked in the field in the evening, piled into small piles with a diameter of 30~ 40cm and a height of 15cm at certain intervals, and killed by 25kg of poison bait per mu.