Large-leaved gentian low-altitude autumn-sowing seedling-strengthening breeding method

Abstract

The invention discloses a large-leaved gentian low-altitude autumn-sowing seedling-strengthening breeding method which comprises the following steps: 1) selecting a seedling culture land; 2) treating seeds; 3) preparing a seedbed; 4) sowing; 5) breaking films to release seedlings; 6) performing seedling management; 7) passing the winter safely; 8) performing topdressing in early spring; 9) transplanting. By the large-leaved gentian low-altitude autumn-sowing seedling-strengthening breeding method, a 'one-film and double-greenhouse' and 'windbreak' three-dimensional heat-insulating method is adopted and heat-insulating nutritional fertilizer is scattered and paved in furrow surfaces to protect roots and promote growth, so that the fact that the large-leaved gentian seedlings grow quickly in winter and are not frozen can be guaranteed, the seedlings can turn green quickly after topdressing is conducted in early spring in the next year to reach the transplanting requirement, the seedling emerging time and the transplant time are obviously shortened and the planting years are shortened.

Description

technical field [0001] The invention belongs to the technical field of medicinal plant cultivation, and in particular relates to a breeding method for strong seedlings of Gentiana chinensis sown in autumn at low altitude. Background technique [0002] Gentiana is a perennial herb of the Gentianaceae Gentiana genus, which grows in subalpine grasses and shrubs at an altitude of 2000-4950m. Its root is used as medicine, which has the functions of expelling wind and dampness, reducing asthenia heat, relieving numbness and pain, invigorating the stomach, and benefiting the gallbladder. It is one of the important traditional Chinese medicines in China and is listed as a national third-level key protected medicinal plant. In recent years, due to the in-depth development of traditional Chinese medicine, the market demand for Gentiana chinensis has increased, while the traditional medicinal materials of Gentiana chinensis are mainly harvested from the wild, resulting in over-harvesti...

AI Technical Summary

Problems solved by technology

However, the technical solution disclosed in this report has the following defects: 1) only soaking with gibberellin when treating seeds is difficult to break the hard seed coat, delaying the emergence time, and the emergence rate is relatively low; 2) seedbed preparation and When sowing, simply make a box that can be covered with film and build an arch shed, and apply base fertilizer on the surface of the box. After sowing, first cover it with fine sand and then cover it with soil

Fine sand has the function of water permeability and air permeability, which can promote the germination of seeds, but it lacks fertilizer effect and when the temperature is low in winter, the effect of heat preservation and root protection is poor. Even if the film is covered with a shed, it is inevitable that frozen seedlings will appear, or the growth rate of seedlings in winter is very slow. , to postpone the transplanting time in the next year; 3) it is closed with a shade net after the arch shed is built, and its thermal insulation effect is poor.