Ophiopogon japonicus is the dry root of Ophiopogon japonicus, also known as Maimendong. With Yang Sheng Sheng Jin, lungs and cough function. The main producing provinces of Zhejiang, Sichuan, Fujian, Jiangsu and Anhui are also cultivated. (A) Morphological characteristics perennial herb, plant height 14-30 cm. The rhizomes are long and slender with knots. There are white scales on the nodes, and the fibrous roots are more tough and yellowish. The apex or the middle often inflates into fleshy roots and is spindle-shaped or oblong. Leaves clustered, narrowly linear, apex pointed, base greenish white and slightly enlarged. Flower stems are extracted from leaves, shorter than leaves; racemes, with 1–3 flowers per stipules, 6 lavender, occasionally white, small; stamens 6; pistil 1, ovary half lower , 3 rooms. Berry spherical, blue-black when ripe; seeds 1, spherical, blue-green or tan. Flowering from July to August, fruiting from August to October. (b) Growing habits Ophiopogon japonicus prefers warm, moist and relatively shady environments. Cold-resistant, strong light and high temperature, in July when the flower, the underground roots began to form, from September to October for the hair rooting period, in November for the root swelling, the temperature rise at the end of February, the rapid expansion of roots. The seeds have a certain dormancy characteristic, and the low temperature around 5°C can break the dormancy and normal germination after 2-3 months. Seed life is 1 year. (III) Cultivation Techniques 1. Loose, fertile, moist and well-drained neutral or slightly alkaline sandy loam should be selected for land selection and site preparation. Water should not be planted in low-lying land. Avoid continuous works. Formerly known as legumes such as broad beans, yellow buckwheat and wheat. Apply 4000 kg of fertilizer per acre and apply 100 kg of superphosphate and 100 kg of cooked cake fat as base fertilizer. Deeply plow 25 centimeters. Make a full-bodied flat and make it 1.5 meters wide. 2. The breeding method reproduces in small clusters. It is generally planted from mid-April to early May, combined with harvesting and planting while harvesting. Choose vigorous and disease-free strong seedlings, cut roots and fibrous roots, as well as tip and old rhizomes, shoot the base of pine stems, divide them into individual plants, cut out the remaining old stem sections, and present white radial flowers at the base cross section. (commonly known as chrysanthemum heart), the leaves are not open for the degree. According to the spacing of 25-30 cm, 20-25 cm from the hole to open the hole, the depth of the hole 5-6 cm, 8-10 per hole planting seedlings, seedlings should be aligned at the base, planted vertically, and then both sides with the earth stepping to achieve level seedlings Positive, timely watering. Per mu of seedlings need to be about 60 kg. 3. Field management (1) Weeding and weeding are usually carried out 3-4 times a year and should be carried out on a sunny day. It is best to weed regularly while preventing soil compaction. (2) Dressing Ophiopogon japonicus has a long growing season and requires a large amount of fertilizer. Generally, it begins in May every year. It combines 3-5 times of dressing in loose soil. The main fertilizer is farmyard manure, and a small amount of compound fertilizer is used. The previous stage is mainly nitrogen fertilizer. In the later stage, phosphorus and potash fertilizers are mainly used to facilitate the expansion of roots. (3) After draining and planting, the soil is often kept moist to facilitate emergence. From July to August, irrigation can be used to cool the roots, but water should not be accumulated. Therefore, water should be drained immediately after rain and rain. 4. Pest control (1) Melasma originated in mid-April and damaged the leaves. (2) Root knot nematode disease See Salvia miltiorrhiza. Insect pests mainly include grasshoppers, tigers, and earthworms. See Campanulaceae for control methods. (D) harvest and processing of Ophiopogon japonica harvest in different parts of the harvest, Jiangsu and Zhejiang areas harvested 2-3 years after the planting, generally dry in late April, select the sunny days, use shovels to dig up the roots, cut roots, set water in the water Wash, and then turn over the sun for 3-5 days, so repeated many times, until the 78 into dry cut fibrous roots, and then dried to dry. You can also sip on the side of the sun until it is dried.