Bletilla striata is a plant of the genus Bletilla of the Orchidaceae family. It has a very good hemostatic effect. Nowadays, adhesive membrane blocks made of bletilla striata are used to stick to the incisions during liver and spleen surgeries to replace blood forceps. The effect is very good and it has rapid blood coagulation. It can replace plasma and is mostly used in surgical operations. It is mainly produced in Sichuan, Yunnan, Shaanxi, Gansu and other provinces, and is cultivated throughout the country.

1. Cultivation technology

1. Site selection and preparation

Choose loose and fertile sandy loam and humus loam, a warm, slightly humid environment, and not cold-tolerant . When planting in well-drained mountainous areas, it is advisable to choose shady slopes for planting in wasteland. Plow the soil to more than 20 centimeters, apply manure and compost, and apply 1,000 kilograms of farmyard manure per acre. If there is no farmyard manure, spread 50 kilograms of carbon-replenishing compound fertilizer. Plow the ground again to mix the soil and fertilizer evenly. Before planting, shallow plow the soil once, rake the soil into fine pieces, and make a sorghum border 130--150 cm wide.

2. Propagation method

It is difficult to sow Bletilla striata with seeds, but it is easier to propagate it through tubers. For large-scale development, tissue culture seedlings can be used for propagation. For tuber propagation, Bletilla striata is usually dug out from September to early November, and medium-sized, disease-free tubers with many buds and eyes are selected. Each piece has 1-2 buds, and then planted with plant ash. Dig the trench at a distance of 20-25 cm and a depth of 5-6 cm. Place a tuber at a spacing of 10-12 cm between plants with the buds facing upward. Fill in, compact, water, cover with grass, and keep moist at all times. 3 --Seedlings emerge in April. 100 kg of seedlings per mu.

3. Field management.

(1) Cultivating and weeding. Bletilla striata requires strict management and weeding in the field. After planting, spray acetochlor to seal the field, and then the bletilla striata seedlings have emerged. Bletilla striata grows vigorously from May to June, and weeds also grow quickly, so weeding is required. Weeding should be combined with loosening the border surface, and shallow hoeing should be done during weeding to avoid damaging the roots.

(2) Top dressing Bletilla striata is a plant that likes fertilizer. Spray carbon-filled potassium dihydrogen phosphate or thin human and animal excrement once a month. It will stop growing and enter dormancy in July-August. To prevent overgrown weeds.

(3) Irrigation and drainage. Bletilla striata prefers shade and should always be kept moist. It needs to be watered during drought. Water it once in the morning and evening from July to September. Bletilla striata is also afraid of waterlogging, so heavy rains should be drained promptly to avoid root damage.