Standardized planting techniques of Radix scrophulariae

Radix scrophulariae is the dried root of Scrophulariaceae, also known as Radix Scrophulariae, Radix scrophulariae, Radix Scrophulariae, nourishing Yin and reducing fire, moistening dryness, promoting fluid and promoting pharynx, used for the treatment of excessive fire due to yin deficiency, restlessness, hot flashes, night sweats, sore throat, lymphatic tuberculosis, carbuncle, constipation, etc., mainly produced in various parts of the Yangtze River Basin. Now it is cultivated in Zhejiang, Sichuan, Jiangsu, Anhui, Hubei and northeast provinces. At present, Radix scrophulariae has put an end to the price downturn for many years, and the consumption has increased from 4000 tons in previous years to 5000 tons, while the market price has now risen to 89.0 yuan / kg, becoming a popular variety planted by pharmaceutical farmers this year, and also the preferred variety for three-dimensional planting under the forest.

Radix scrophulariae likes warm and humid climate, and seedlings begin to emerge when the temperature is 12 ℃. The stem and leaf grow rapidly when the temperature is 20 ℃ ~ 27 ℃. After the shoot growth peak, the root growth accelerates gradually. The optimum period of root growth and development was from 21 ℃ to 26 ℃, and the root thickness and weight increased significantly. The shoot withered in August, and the growth period was 220-240 days. The suitable temperature for seed germination is 30 ℃, but the germination rate is low and the seed life span is 2 years, so the propagation of seed buds (root buds) is not only fast, but also easy to manage.

The deep-rooted plants of Scrophularia scrophulariae are not strict with the soil, and can be planted in plains, hills and low mountain slopes. However, it is better to plant in light loam or medium loam with deep sunny soil, loose and fertile soil and good drainage, and continuous cropping is avoided. Leguminosae or Gramineae crops are better than rotation with Atractylodes macrocephala Koidz and other medicinal materials. After harvesting in the previous crop, we should turn deeply after harvest, apply sufficient base fertilizer, apply rotten barnyard manure 1000kg per mu, and appropriately increase phosphorus and potassium fertilizer. Rake it flat and make the bed.

Variety selection from the planting area, there are four kinds: Zhejiang Scrophularia, Sichuan Scrophularia, Radix scrophulariae and Radix scrophulariae. Radix scrophulariae distributed in Liaoning, Jilin and other provinces, North China Scrophularia distributed in Hebei and other places, wild, with Zhejiang Xuanshen root thick and fat, high yield and good quality. Zhe you No.1 is the best variety in production.

The method of reproduction is mainly propagated by seed buds, that is, with a rhizome with seed buds. Most of them are planted in winter or in spring in the south, from mid-December to the first and middle of February of the following year, and from February to April in the north. The root system of early planting is developed, the plant is strong and the yield is high. Before planting, select disease-free, sturdy, white buds as seeds, it is best to soak in 1000 times solution of 50% bacillus for 5 minutes, dry and plant, according to row spacing 40~50cm, plant spacing 35~40cm hole, put a seed bud in each hole, bud upward, cover soil 3cm about.