Is black peanut a genetically modified food? 2018 prices and specialty producing areas

Black peanut is a new variety of peanut. Compared with normal peanuts, it is more nutritious, so it has relatively high market value. However, because the planting area in China is small, the price of black peanuts is very expensive. So is black peanut a genetically modified food? Where is it a specialty? How much is it per jin in 2018?

Black peanut is not a genetically modified food. In fact, it is the same kind of variety as hybrid rice; it is also a hybrid variety. Black peanut is produced by variation according to the heredity of peanuts and by using hybridization methods. The black pigment of black peanut is determined by the genes that control pigment. Its nutritional value is especially high, and it is rich in elements such as selenium, calcium, iron and zinc. The selenium and anthocyanins in it can prevent skin aging, and its antioxidant effect can prevent cholesterol. Eating it regularly is also excellent for restoring mental energy and nourishing the brain.

Black peanut 2018 price:

The price of black peanuts depends on the grade of the black peanuts. The price range is roughly 10 to 20 per jin. When buying, you can still look at several sellers.

Black peanut is a specialty of Hebei. If you have the chance, you must buy some to try.

Attached black peanut planting methods:

1. Plot selection

Black peanut does not have strict soil requirements, and any plot where ordinary peanuts can be planted can be used for planting. It is advisable to choose a plot with sufficient water sources, convenient irrigation and drainage, a plough layer depth of more than 30 cm, and uncontaminated sandy loam soil. Virgin soil is best. A previous crop of gramineous crops or non-leguminous vegetable crops is also acceptable. Continuous cropping and alternate cropping plots are not suitable for planting peanuts.

2. Land preparation and fertilization

The quality of land preparation is directly related to the quality of film mulching and the effect of preserving full stands at sowing. Fine land preparation should achieve fine, crumbly soil without visible or hidden clods and root stubble. Because topdressing during the growth period is rather troublesome, it is advisable to apply sufficient base fertilizer. Apply 3000-4000 kg of high-quality decomposed farmyard manure per mu by broadcasting or banding, 25-30 kg of compound fertilizer, and about 20 kg of calcium superphosphate. Use machinery or labor to form ridges. If soil moisture is poor, do not make beds and cover film without moisture; after ridging, irrigate to build moisture, then make beds. Beds should preferably run north-south, with a bottom width of 90-100 cm, a surface width of 60-70 cm, and a height of 10-12 cm. When covering film, the plastic film should be moderately tight, and both sides should be pressed tightly and sealed with soil. Press one spade of soil every 3-4 m on the bed surface to secure the film and prevent strong winds from lifting it. For large-area plots, the whole process can also be mechanized to complete bed making, herbicide use, sowing and film covering in one pass.

3. Improve sowing quality

1. Germination acceleration and sowing.

First mix 2 parts cold water and 1 part boiling water, then put in the shelled and selected seeds, soak for 2-3 hours, take them out and put them in a basket, cover the surroundings of the basket with wet gunny sacks or other material, place on a heated kang, and keep the room temperature at 25-30°C. While keeping warm and moist, ventilate appropriately. After 24-36 hours, sprouts can be picked for sowing, and seeds that have not germinated should continue to be germinated. During seed soaking, if the seed coat becomes wrinkled, do not turn them, so as to avoid peeling. Germination should preferably reach "white exposure." If sprouts appear and it rains, the seeds should be spread in a cool, ventilated place to inhibit sprout growth, and sown promptly after the rain.

2. If germination acceleration is used before sowing, then land preparation should be even finer. After shelling, seed selection should be careful, and any sprouted seeds should be removed. At sowing, dress seeds with 0.1% chlorothalonil or 0.03% carbendazim by seed weight. This has a good effect on preventing stem rot and root rot, ensuring strong and uniform seedlings.

4. Sowing

Sowing can be done when the 5 cm soil temperature is stable at 12-16°C. There are two methods for sowing film-mulched peanuts: first, sow in rows and then cover with film. Open 2 rows of furrows on each bed, sow 2 seeds every 16 cm, cover with soil, then level the bed surface, choose herbicides such as pendimethalin and acetochlor, spray evenly on the bed surface, and then cover with plastic film. When seedlings show 2-3 true leaves, promptly punch holes and break the film to release the seedlings. Second, cover with film first and then sow. One week before sowing, prepare the beds, choose herbicides such as pendimethalin and acetochlor, spray evenly on the bed surface, and then cover with plastic film. At sowing, use a hole punch to make holes 3-5 cm deep on the bed surface, sow 2 seeds per hole, and then use moist soil from the furrow to cover the holes. Film-mulched black peanuts generally emerge about 15 days after pushing through the soil.

5. Strengthen field management

In view of the characteristics of peanuts fearing waterlogging in the early and late stages and fearing drought in the middle stage, clear ditches and drain water at the seedling stage, and irrigate promptly at the flowering stage. In particular, during full flowering and pod expansion, water 1-2 times if drought occurs; when drought signs appear during the pod-filling and maturity stage, immediately irrigate furrows to moisten the soil, protect roots and leaves, and increase the index of double-kernel pods and full pods. About 25 days after flowering, for peanut fields showing excessive growth, apply 20-25 kg of paclobutrazol per mu mixed with 60 kg of water and spray. If producing green food peanuts, manually remove the growing points of the first and second pair of lateral branches of the peanut to control vegetative growth, increase 100-pod weight, and at the same time increase peanut yield. Because plastic film is used, peanuts grow and develop early, and nutrient deficiency and premature senescence are likely to appear later; therefore, foliar topdressing can be combined with aphid and disease control. Spray the leaf surface with 100-fold 40% omethoate solution or insecticides such as imidacloprid, fungicides such as 600-800-fold 75% chlorothalonil wettable powder, and potassium dihydrogen phosphate or urea.

6. Timely harvest

Black peanut pods have relatively high water content at maturity, dehydrate slowly, and have short after-ripening and dormancy periods, so they must be harvested in time to prevent sprouting and pod rot. Harvest can be done when the upper leaves of the peanut fruit branches turn yellow and fall off, the pod shell net pattern is clear, and the seed kernels are black, bright and glossy. After harvesting, after pulling up the plants, turn the pod parts of the roots toward both outer sides and stack them into strip-shaped stacks along the north-south direction. Place boards or similar under the bottom of the stacks to prevent rain from flooding the harvested peanuts. The height of the peanut stacks is best for allowing people to cover them with tarpaulins when it rains for drying. When the peanuts make a "bi bi" sound when picked up and shaken, they can be stripped, then spread out for further drying until completely dry. Peanuts dried this way dry easily, and the appearance quality of the pods is good.