Planting techniques of Achyranthes bidentata

Achyranthes bidentata, Ach

Land selection and preparation

Achyranthes bidentata (Achyranthes bidentata) is a deep-rooted plant, which grows wild in the grass on the side of the house, woodland and hillside, and is cultivated in plain areas. Select sandy loam and yellow soil with warm and humid climate, loose and fertile soil, except clay and saline-alkali soil, general soil can be planted, and it is suitable to choose sandy loam with deep upper layer, dry and good drainage. Apply more than 5000 kilograms of ring fertilizer or soil fertilizer per mu, and add 25 kilograms of calcium superphosphate, turning 50 to 60 centimeters deep. After slightly leveling, open a ditch 20 to 30 centimeters deep every 60 centimeters, pour enough water along the ditch, make the soil fully moist, wait for the ground to be slightly dry, then fill and rake fine, and form a 1-meter-wide flat border.

Sowing and raising seedlings

Achyranthes bidentata is usually sown on the border surface that has been fully fertilized in the middle of June of the lunar calendar. If the weather is cloudy and rainy, just spread the seeds evenly on the border and cover 0.5 cm thick soil. If there is no rain, soak the seeds in clean water for 1 day, drain the water, place them in a basin, cover them with cloth, put them indoors, mix them and turn them indoors, sprout in about 2 days, spread the germinated seeds evenly on the bed in the afternoon, cover them with 0.5 cm thick and then water them. The soil must not be dry. If it does not rain for a long time, it should be watered every 1-2 days. After the seedlings come out, the soil should always be kept moist. The sowing rate per mu is 0.5 kg.

Field management

1, uniform seedling ploughing: Achyranthes bidentata seedlings are afraid of high temperature stagnant water, the seedlings can no longer be watered. When the seedling height is 3cm, the seedling height is 3cm, and when the seedling height is 6cm, the seedling is fixed according to the plant spacing of 9cm. One month after sowing, the plant appeared bowels, and if necessary, the buds were removed for 3 or 4 times. When the seedling height is 12-15 cm, cake fertilizer is applied in combination with ploughing, 750 kg per hectare. The yield and quality were improved when the terminal inflorescence was cut off and the top was removed in time when the seedling height was 40cm to 50cm.

2. Watering and fertilization: from the seedling stage to the middle of August, Achyranthes bidentata should be watered as little or not as possible to make the root grow downward. The amount of water should be increased after late August to promote the thickening growth of the main root. Experienced farmers said that the seedlings were poured in the early stage, the roots were rotten in the later stage, and the yield was high in the middle stage. In addition to topdressing seedling fertilizer, one time of topdressing at the end of September and one off-root fertilization with calcium superphosphate at the beginning of October should be avoided.

3. Harvest and processing: Achyranthes bidentata generally generates income when the leaves wither on the ground before and after Frosts Descent. The premature root is not full and the yield is low. The root is easy to be lignified or frozen in the evening, which affects the quality. Carefully planing, prevent breaking, shake the soil, dry to 80%, divided into short and long grades, according to the ratio of 100 to 1 with sulfur fumigation, in order to prevent moth. And the color is yellow and bright and easy to dry, and then dry into medicine. It generally produces 3000kg to 3750kg of dry goods per hectare.

Pest control

1. Leaf spot

[harm] Leaf spot harms the leaves, which mostly occurs in the rainy summer season, and the damaged leaves produce yellowish-brown disease spots. In severe cases, the whole leaves become grayish brown and wither and die.

[prevention and control] clear the fields before harvest and concentrate on the treatment of residual plants. At the initial stage of the disease, spray 1 Vera 120 Bordeaux or 65% desenamine 500 times, once every 10 to 15 days for 2 consecutive 3 times.

2. Root rot

[harm] Root rot mostly occurs in high temperature and rainy season and low-lying stagnant water places. after the disease, the underground roots rot in the shape of brown water stains, and the aboveground parts die.

[prevention and control] choose plots with good drainage, do high border planting, pay attention to drainage in rainy season, treat soil with 50% carbendazim 1 kg per mu, remove diseased plants or disinfect disease holes with lime, and irrigate the disease area with 50% carbendazim 500 times solution.

3. Spodoptera litura

[harm] the larvae of Spodoptera litura damage the plants and bite the leaves into holes or scratches.

[control] artificial killing of larvae or spraying 90% trichlorfon 1000-1500 times or adding 40% dimethoate 2000 times.

4. Red spider

[harm] Red spiders usually cause damage from June to July, and the damage is serious during drought. the adults absorb juice on the back of the leaves, and the diseased leaves dry up and fall off.

[control] remove weeds, eliminate overwintering pests, spray with 25% chlordimeform rice water agent 500 times or 40% dimethoate 1000 times 1500 times.