First, the selection and treatment of Salvia miltiorrhiza seeds
Seed selection: The seeds should be selected to be full, full, uniform, bright and lustrous, with a weight of 2.6 grams per thousand, a purity of over 96%, and a germination rate of about 85%.
Seed treatment: soak the seeds with warm water at 30-35 ° C for 10 to 12 hours. Then remove and dry it a little. Put a small amount of edible alkali into the mash. Rinse with clean water, put it into a germination bag or other container, and germination in an environment with a temperature of 25 to 30 ° C and a humidity of 95% or more, and turn it 2 to 3 times a day. After 5 to 6 days, 40% to 60% of the seeds reveal the radicle and can be sown.
Second, soil preparation and fertilization
Cultivation of Salvia miltiorrhiza is generally carried out for more than 2 years without the application of chemical fertilizers, pesticides and plots without residual harmful substances. Before the preparation of the land, 4,500 kg of high-quality decomposed farmyard manure, 150 mg of calcium-magnesium-phosphorus fertilizer or super-calcium phosphate, and then ploughed and smoothed.
Third, field management
Sowing: Sowing in mid-April, the depth of the ditch is about 1cm, according to the row spacing of 40-50cm, the distance from the fruit tree is more than 45cm, and the shallow ditch is 0.5-1.0cm, which is sprinkled into the ditch with the mud seed, covering the soil 0.6-1cm, flattening and pressing In fact, the seeds are tightly combined with the soil, and the kneading surface is kept moist. After about 10 days, the seedlings are planted, and the seeding amount is 1.5-2.0 kg per mu.
Ding Miao: When the seedling height is 6cm, the seedlings are fixed, and the plant spacing is 10-15cm. If there is a lack of seedlings, bring soil to replant.
Weeding and weeding: Generally, we must carry out weeding and weeding 3 times to keep the soil loose in the field.
Picking buds: In addition to the plants that remain as seeds, the flower buds must be removed in order to facilitate root growth.
Reasonable fertilization: According to the growth condition of Salvia miltiorrhiza, the fertilizer should be properly topdressed. Spraying 800 times of new high-fat film can promote the full absorption and utilization of Danshen.
Pest Control: The main pests and diseases of Salvia are root rot and ground tiger. Root rot is easy to occur in the rainy and hot season from June to August, and it can be drained in time for prevention and treatment. Avoid continuous cropping. The disease period is watered with 70% carbendazim 1000 times solution; the tiger is harmful to tender seedlings, and 5% new high fat film diluent can be used. Mix the soil at 1:10 and sprinkle it between rows to kill.
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