Planting technique of Sophora flavescens

Bitter grass, also known as flat grass, is a perennial stemless submerged herb, born in streams, rivers and other places, set ornamental, economic, medicinal in one, generally engaged in fishing people will breed, what are the planting techniques of Sophora flavescens?

1. Land selection and preparation

Bitter grass is suitable for planting under forests with 50% shade or in open fields where sheds are built and crops are interplanted. After selecting the land, turn the soil deeply and rake the soil, then disinfect the soil with Bordeaux liquid or quicklime a week before sowing, then make a border 1.2m wide and 10-15cm high, the length depends on the topography, level the border surface, apply turf mud, human and animal manure and phosphate fertilizer to 1000-1500 kg per mu as base fertilizer, and mix well with the soil for sowing.

2. Reproduction

(1) sowing and propagation: when the fruit is dark brown in summer and autumn, select the fruit sequence in the middle of the plant to collect seeds, dry with a handle, remove sepals and pericarp, obtain pure seeds, and store them in a cool and dry place in a cloth bag. The sowing time should be in mid-March in Guangxi and northern Guangxi, and sowing in January-February in other areas. On the whole plot, sow the seeds mixed with fine soil (1:10). After planting, cover with a thin layer of turf mud, cover with grass, and moisturize the seeds to facilitate seed germination. When the normal temperature is above 18 ℃, it can germinate 10-15 days after sowing. The mulch can be removed after the seedlings are unearthed.

(2) Cuttage propagation: select the tip of unflowered stems and branches, with 2-3 nodes, about 10-15 cm long as cuttings. In March-April or July-August, the plant spacing was 20 cm × 20 cm oblique. Generally, it can take about a week to take root, and the survival rate is 80%-90%.

3. Transplanting and planting

Sophora flavescens grows slowly at seedling stage, and it takes about 100 days from sowing to transplanting. Transplanting is best when the seedling has two pairs of true leaves and is 7-10 cm high. Cuttage seedlings have fast rooting and good growth, and can be transplanted about 50 days after cutting. Planting density: row spacing 25 cm × 30 cm or 26 cm × 33 cm. The planting land applies 2500 kg base fertilizer per mu, and the mixture of turf mud, human and animal manure, calcium, magnesium and phosphorus is the best.

4. Field management

The main results are as follows: (1) Seedling replenishment: generally 1-2 weeks after transplanting, plant inspection should be carried out when the seedlings resume growth, and the missing seedlings should be planted in time to ensure the whole seedling. Sophora flavescens needs more water in the whole growth process, and it should be drenched frequently in the future to promote growth.

(2) Intermediate ploughing and weeding: before the plant is closed, the weeds should be ploughed for 1-2 times; when the row is closed, only weeds are pulled, and after that, there are few weeds that can not be removed.

(3) fertilization: Sophora flavescens experienced more than 3 months from transplanting to harvest, and could be fertilized 4-5 times by stages. 500-800 kg / mu of dilute feces and urine can be applied in the early growth stage, and nitrogen, phosphorus, potassium compound fertilizer or urea can be applied in the later stage.

(4) pest control: blight, nematode disease and blight will occur during the growth of Sophora flavescens. The general blight can be sprayed with 1000 times of topiramate or 50% topiramine for 2-3 consecutive times.