Year-Round Cultivation Methods and Key Technical Points for Pure Fragrant Oil Wheat Vegetable

 1. Variety characteristics  Plant height 30-40cm, spread 20-30cm, leaves lanceolate, about 40cm long, 6-10cm wide, green, leaf surface smooth, cold-resistant, heat-tolerant, bolting-resistant, strong adaptability, can be cultivated year-round in open fields and protected areas, seeding rate per mu is 30-40g. 2. Pest and disease control  The main disease of oil wheat vegetable is downy mildew, which occurs more in early spring and needs to be controlled with fungicides such as carbendazim; the main pest is aphids, which can be controlled with aphid-killing agents, Dagonchen and others. 3. Year-round cultivation techniques  2.1 Early spring sowing: From January to March, sow and raise seedlings in a medium tunnel. Build 2 beds in a standard tunnel, open a ditch in the middle, deep-plow and build beds, water thoroughly, broadcast seeds in the beds, cover with seed soil just enough to cover the seeds, and lay plastic film flat (2 layers of film plus 1 layer of ground film). Generally seedlings emerge in 10-15 days; in cloudy and rainy low-temperature periods, emergence takes longer. After full emergence, remove the ground film, ventilate and exchange air; during the day prevent high temperatures from damaging seedlings, and at night prevent freezing damage.  2.2 Summer sowing: From April to June, raise seedlings in open fields. Choose high-lying land, 2m including ditches, deep-plow and apply decomposed barnyard manure, build beds and level them. Soak seeds for 3 hours, sow after the seeds are air-dried. Water the seedling bed thoroughly, broadcast the seeds on the bed surface, cover well with seed soil, and water thoroughly. In case of high temperature and drought, cover the beds with shade netting; after full emergence, uncover the netting in the morning and evening. Fertilizer and water in the seedling bed should be moderate, not too dry.  2.3 Autumn sowing: From July to September, oil wheat vegetable seedling cultivation requires seed soaking and germination. The method is to wrap the seeds in gauze, soak them in water for 3-4 hours, then take them out and place them in the refrigerator compartment for 10-15 hours; sow when 75% have sprouted. For autumn sowing seedling cultivation, it is best to use small arched tunnels or large tunnels. After emergence, pay attention to soil moisture; it should not be too dry or too wet, and weeds should be removed in time to ensure smooth drainage.  2.4 Autumn-winter sowing: In October, seedlings can be raised in open fields; in November and December, seedlings can be raised in large tunnels. The method is the same as spring sowing; November-December is the same as early spring sowing.  4. Transplanting and planting out  Before planting out, deep-plow and apply sufficient base fertilizer. Generally, apply 3000kg of decomposed barnyard manure per mu and 80-100kg of ammonium bicarbonate, 2m including ditches, deep ditches and high beds. Plant out at the 4-5 leaf seedling stage; the seedlings should be strong, with plant spacing and row spacing of 10-15cm, cultivated on flat beds. 3.1 Winter sowing: Transplant in large tunnels and cover with ground film; they can be marketed in about 30 days, with a yield per mu of 1500-18000kg.  3.2 Spring sowing: Transplant in open fields, apply sufficient decomposed barnyard manure, and apply 80kg of ammonium carbonate per mu. After planting out, water thoroughly to settle the roots. In case of drought, promote growth with fertilizer and water; they can be marketed in 25-30 days, with a yield per mu of 1800-2000kg. 3.3 Autumn sowing: July-September coincides with high temperature and drought seasons, and there are often rainstorms. After transplanting, water thoroughly to help the plants establish; cover with shade netting for 5-7 days. After establishment, if there is cloudy and rainy weather, the shade netting can be removed. Moderate fertilizer and water are beneficial to the normal growth of oil wheat vegetable; they can be marketed in 20-30 days, with a general yield per mu of 1600-1800kg.  3.4 Autumn-winter sowing: From October to November, transplant in open fields; in December, when cold waves strike, they need to be transplanted in large tunnels; they can be marketed in 25-30 days, with a yield per mu of about 1500kg. 5. Harvesting  Pure fragrant oil wheat vegetable is generally harvested 20-30 days after planting out; after more than a dozen leaves, it can also be harvested and marketed at any time according to market demand.