Techniques for high quality and high yield of licorice in large area
Field management
1. Intermediate ploughing and weeding: weeding should be done in time after the seedlings come out, so that there are no weeds in the field, three shovels can be carried out for ridge planting, and weeds should be pulled out for border planting. This is the key to high quality and high yield. If possible, herbicides can be closed before emergence after sowing, and the field is sprayed with 2 bags / mu of 2 bags / mu of wettable powder (20% chlorosulfuron) and 4 bottles / mu of Acetochlor. After emergence, the herbicide that kills monocotyledons can be sprayed to eliminate weeds.
two。 Inter-seedling fixed seedling: combined with medium tillage, the height of weeding seedling is 3mi 5cm, the distance between seedlings is 6cm 7cm, the height of seedling is 5m 10cm, the distance between seedlings is 10m 15cm. Planting and raising seedlings on the border can be denser, with a plant distance of 3-5 cm.
3. Topdressing: combined with ploughing and weeding, 2000 kg of barnyard manure per mu, mixed with 15 kg of superphosphate. Put in the furrow and wade on the ridge. Foliar fertilizer can also be sprayed to increase yield.
4. Irrigation: although licorice is a deep-rooted drought-resistant plant, but in the seedling stage because of shallow roots, drought resistance is not strong. Therefore, in case of drought at the seedling stage, we should timely irrigate and water in order to protect the water supply at the seedling stage. It is seldom irrigated at the adult stage. Attention should be paid to the drainage in the rainy season from July to August so that there is no stagnant water in the field to prevent rotting roots.
5. Pick buds: 3-4 years old blossom. The plots that are not used as seed fields should pick buds in time at the flower bud stage to prevent the consumption of nutrients, increase the yield of roots and improve the quality.
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Disease control of licorice
(1) Rust: there are yellow-brown scar spots on the back of the leaves when infected, and brown powder is scattered after the epidermis is ruptured, which is the summer spore pile of the pathogen, which forms a black-brown winter spore pile from August to September, resulting in withered and yellow leaves and shedding in severe cases. Control methods: increase the application of phosphorus and potassium fertilizer to improve plant disease resistance. Remove the sick and disabled body and burn it centrally. At the initial stage of the disease, 15% of the powder was sprayed with 1000 times of the solution, or 97% of the diazepam was sprayed with 400 times. (2) Brown spot: damage to the leaves, the damaged leaves produce round or irregular disease spots. Disease
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Cultivation techniques of ditching and direct seeding of licorice
Glycyrrhiza uralensis Fisch is a deep-rooted plant. The cultivation technology of ditching and direct seeding can solve the unfavorable factors such as seedling raising, transplanting, low yield and long growth cycle, and greatly improve its economic benefits. * * Yili Tex County belongs to the continental climate type of the north temperate zone, and the natural geographical environment is very favorable for the growth of licorice. In 2005, we used ditch planting deep root plant machinery to plant licorice for the first time in Xinjiang, which changed the conventional licorice planting pattern. Now the ditching direct seeding cultivation techniques are introduced as follows. 1 selection of land, application of base fertilizer and selection of fertilizer for soil preparation
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