Dryland radish summer sowing technology

Radish is the main vegetable species supplied by the urban and rural residents in winter market. The demand is large, and it is particularly important to implement high-yield and high-quality cultivation techniques. The experience of cultivating radish in masses on the dry land in northern Hebei Province is summarized as follows: 1. The radish of the radish is selected from the cruciferous crops, and can not be planted on the former cropland of the same crop. Select a sandy loam soil with thick soil, fertile and good ventilation. Planting plots deep plowing 20 cm, and burrowing leveling, conducive to the growth of radish rhizomes. Second, fertilization ridiculed radish acres of high yield, soil nutrient consumption, fertilization to soil fertilizer as the main base, supplemented by chemical fertilizers. Combined with site preparation, Mushi rotted 4,000 kg of soil fertilizer, 25 kg of superphosphate, 20 kg of potassium chloride, or 60 kg of NPK fertilizer. Ridge planting, ridge height 15 cm, ridge distance 50 cm, ridge point species, ditch drainage, promote root enlargement. Before ridging, 10% of the land per mu is 1200 grams, mixed into poisonous soil, and thrown into the surface to prevent and control the damage of underground pests. Third, the selection of seeding selection of white jade, Daqingpi, Germany and Japan on the 2nd, Baoluo 1, Guoguang 1, Fengguang generation, Toyoda generation, large root radish and other varieties. The sowing time should be determined according to the local climate conditions. It should be planted at an altitude of 1,000 meters above sea level and planted in late June. At lower altitudes, sowing in late July is appropriate. The amount of mu for use is 500-600 grams with a spacing of 20 cm. The seeds newly produced that year were used to prevent radish twitches. IV. Seedlings, seedlings, radishes, sowing 5 seeds per hole. When the seedlings grow to 2-3 true leaves, leave 2 plants per hole, remove weak seedlings, diseased seedlings, grow to 5 seedlings, and leave 1 seed per hole. , so that individual seedlings grow robustly. Fifth, the cultivator weeding radish Dingmiao timely shallow-medium loosing soil, remove the weeds, can play a role in promoting control combined with stimulating growth. 6. Fertilizer Spray Fertilizer 30 days after emergence of radish, when the soil moisture is good, the fertilizer is applied outside the roots, 20 kg of urea, 10 kg of chlorinated exogenous substances, and dry application of acupuncture points. In case of dry weather, it is possible to spray 0.3% potassium dihydrogen phosphate on the foliage, spray once every 7 days, and spray 3 times, which is good for root expansion and increase production. 7. The prevention hollow is controlled by chemical drugs. When the radish grows to 8 leaves, it starts to spray 0.3% borax solution on the leaf surface, 15 times a day, sprays 3 times in total, or sprays 10 ml/kg Naphthylacetate solution. The spray was sprayed 15 times a day for a total of 2 sprays to increase the quality of rhizomes and delay ripening and preventing hollows. VIII, pest control Radish disease mainly black rot, mosaic virus disease, vitiligo, soft rot, before sowing with warm water soaked in 50 °C for 30 minutes, the early onset of spraying 72% of agricultural streptomycin 15 grams of water to 80 kg , Every 7 days, once a total of 2 sprays. The main pests are yellow bucks, aphids, cabbage caterpillars, and diamondback moths. They are controlled with a 2,000-fold solution of cypermethrin for 2,000 times at 7-day intervals. They are not used twice, and high-residue pesticides are prohibited. Nine, timely harvest When the radish individual grows to 1.5-2 kilograms, when the old leaves of the ground yellow, when the roots have not been sugar, it is regarded as timely harvest period or calculated according to the growth period, grow to 65 days should.

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