Planting method and field management of Achyranthes bidentata

Overview

Achyranthes bidentata is propagated with seeds and planted in Hebei in early June, in Inner Mongolia in May and in Henan in mid-July. The harvest in November of that year (suitable for harvest during the period from Lesser Snow to the Winter Solstice), except for Inner Mongolia, the growth period of the other two places is about 140150 days. The management of Achyranthes bidentata is extensive, and the general yield per mu can reach 300-350 kg. The root of Achyranthes bidentata is longer, and it takes time and time to dig. About 1 kilogram of seeds are needed per mu. Cultivation and management

(1) Land selection and land preparation: Achyranthes bidentata has strong adaptability and can be planted in general soil, but it can not be planted in saline-alkali land, heavy clay land, waterlogged land and soil layer book. The sandy loam with deep soil layer, sunny dry and loose and fertile soil is the most suitable (deep ploughing, soil preparation and bed cultivation are all carried out according to the requirements of planting Platycodon grandiflorum). It is best to apply fertilizer in autumn when there are conditions. After the harvest of the previous crop, apply high-quality farm manure 4000kg, ammonium phosphate 8-10kg, long-acting ammonium bicarbonate in 50-60kg, potassium sulfate 5-7kg, before turning deeply, evenly spread the field surface, then turn 30-40cm deeply, level and rake fine, and sow seeds in spring next year.

(2) planting treatment: 10 days before sowing, the seeds were selected by the wind and insolated in the sun for 3 days, and the germination experiment was carried out. The germination rate was more than 80%, and only sowed 2-2.5kg per mu. The day before sowing, soak the seeds in 20C warm water for 12 hours, remove them to dry, mix fine sand or plant ash at a ratio of 1:30, and then sow.

(3) suitable sowing time: the suitable sowing time is the key to the cultivation and production of Achyranthes bidentata. Early, there are no growing blocks on the ground, the roots are easy to bifurcate and Lignification, and early flowering consumes nutrients, affecting yield and quality. If it is too late, the growth period will be shortened, the growth will be stunted, and the yield will decrease. Niuyingzi area in Chifeng is suitable for sowing from late May to mid-June. There are also replanting fields, but no later than the end of June at the latest.

(4) sowing method: 1. Broadcast on the Internet. Line spacing 15-20cm, ditch depth 2-3cm, soil cover thickness about 1.5cm, tread lightly with your foot after sowing. At the same time, in the field without autumn fertilizer, ammonium phosphate 8-10kg and potassium sulfate 5-7kg were applied per mu, and the seeds were stratified and necrotized, and fertilized and covered with a layer of soil before sowing. two。 Interplanting. In order to improve the land utilization rate, wheat can be planted between rows from late May to early June, and can be harvested in the same year. 3. Replanting. When Codonopsis pilosula, Platycodon grandiflorum and other drug fields are incomplete, Achyranthes bidentata can be replanted to increase the income of the year.

Field management

Weeding and topdressing

Ploughing, weeding and topdressing, 3-4 times a year, watering during drought, picking flowers when plant height is 50 cm. Seedling height 7cm time seedlings, inter-seedling once, seedling height 17-20cm according to plant distance 13cm fixed seedlings. Ploughing and weeding for 2 or 3 times before and after seedling setting. In addition to applying sufficient base fertilizer, phosphorus and potassium fertilizer can be applied from July to August, and calcium superphosphate can be sprayed one month before harvest. When plants are bolting in late August, inflorescences should be removed in time to avoid blooming to consume nutrients and promote root growth, but do not damage stems and leaves. Always keep the field moist after emergence. Pay attention to drainage in rainy season to prevent rotting roots. Water can be irrigated once before harvest to make it easy to dig the roots.

Pest control

Self-rust and leaf spot can be controlled by spraying 1-1-12 Bordeaux solution or 1000-fold solution of 50% wettable methyl topiramate. Root rot disease should pay attention to drainage and choose high and dry land for planting, avoid continuous cropping. 50kg was perfused with 1000 times of carbendazim wettable powder or lime 2.5kg mixed with water. In addition, there are leaf spot disease and nematode disease. The insect pest has the craze cover moth, may kill or spray 90% trichlorfon 800 times liquid to prevent metallurgy. Cotton red spider can be controlled with 40o% isocarbophos 1500 times solution. In addition, there are inchworm and ape leaf insects.