Licorice cultivation techniques

Seeding method

The licorice is widely used in land selection and site preparation, and the requirements for the cultivation environment are not strict. The semi-arid and arid areas with an average temperature of 4°C to 12°C and a sunshine duration of 2600 hours or more can be cultivated. Infertile farmland can also be planted with licorice. However, it is also important to note that wolfberry and areas with high groundwater levels, soil viscosity, and acidic areas are not suitable for licorice cultivation. The conditions can be optionally planted on sandy or watery soils with a soil salt content of no more than 0.5%, which can achieve high germination rate and seedling maintenance rate, rapid growth rate, bright color of roots and rhizomes, good quality, and high economic benefits. the goal of. The grassland station in Urumqi, Xinjiang will be selected as the test site for land reclamation after wheat was planted three years ago in Yongfeng Township. The soil is deep, the soil is loose, drainage is good, and the salinity is low. The previous field management includes: deep-turning 40 cm to 50 meters, fine leveling, making stilts, width 40 cm to 45 cm, width 30 cm to 35 cm. The experimental area is 3 hectares.

Seed selection and seed treatment

The selection of Glycyrrhizic acid and Glycyrrhetinic acid higher content of Ural licorice.

Seed treatment Licorice seed coat hard, impervious, airtight, not easy to germinate, the germination rate of untreated seeds is only 30% to 40%, and the germination rate of the broken skin treatment can reach more than 90%, so it must be The seeds are pretreated. The method used is to soak the seed in 60°C water and remove it by covering it with a damp cloth for 4 hours to 6 hours to allow the water to swell and then sowing after drying.

Sowing seedlings

Planting licorice can be planted in spring, summer and autumn, but according to the climatic conditions in Urumqi, the yield and quality in spring are better. The test area was selected for sowing in the middle of April in spring. Using 12 seed drills, sowing depth of 2 cm to 3 cm, spacing 30 cm. In order to increase production, the sowing amount increased 12 kg/ha. When planting, ensure that the seeds are uniform, consistent in depth and depth, and properly suppress and irrigate the water once after sowing.

When the temperature is 20°C, seedlings can emerge from 5 days to 7 days. When 50% of the seedlings emerge, remove the cover grass, water and water, and wait for Qimiao. When the seedling height is 15 centimeters to 20 centimeters, the emergence rate is 90%, the seedlings grow for about 4 months, and the roots reach 35 centimeters to 40 square meters, meeting the requirements for transplanting standards.

Field management

Seedlings and Dingling seedlings grow 1 to 2 true leaf time seedlings, seedling distance maintained at about 5 cm, when the seedlings grow 3 to 4 true leaves when the Dingmiao, spacing 10 meters to 15 cm.

Irrigated licorice is a deep-rooted drought-resistant plant, but it has a weak root and has a weak drought resistance at the seedling stage. Therefore, after the seedling grows to 4 pieces of true leaves, it should be poured into shallow water or sprinkling, and it must not be flooded. Pay attention to keep the seedlings moist, and the number of waterings should neither be too much nor too little to ensure the moisture supply at the seedling stage. After the adult period, little water is supplied. From July to August, when there was a lot of rain, the water was drained in time so that there was no water accumulation in the field and the rot was prevented. The key to the cultivation of licorice is keeping the seedlings, and generally the plants are no longer watered after they grow.

After the cultivating and weeding seedlings emerged, they should be cultivated and weeded in time to ensure that there is no weed in the fields. This is the key to high quality and high yield. Conditioning can be closed and weeding before sowing after sowing, with Bean Yellow (20% chlorpyrifosolone) wettable powder 2 bags per 667 square meters, acetochlor spray 2 bottles to 4 bottles per 667 square meters field. After emergence, monocotyledonous herbicides can be sprayed to eliminate weeds.

The topdressing topdressing is carried out after the first time, and 10 kg of urea is topped for every 667 square meters, and the ditch is applied. The second topdressing application of urea at a height of 20 cm, 15 kg per 667 square meters.

Disease prevention and treatment

The main diseases of licorice are powdery mildew, gray spot disease, and rust. Therefore, it is necessary to strengthen field management, pay attention to drainage, ventilation, and ventilation. If there is disease, the early stage of the disease is sprayed with Triadimefon 1000 times solution, or 0.3 times Baume Degree Lithium Sulfur Mixture. 75% Chlorothalonil WP 500 to 600 times, spray once every 7 days to 10 days, spray twice - 3 times.

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