What excellent varieties are selected for onion production?

This variety has purplish red bulb skin, red meat, strong spicy taste and high yield, and most of them are mid-late maturing varieties.

Beijing Onion: A Local Variety in Beijing Suburb. This plant is very tall, 66 cm above the ground and 45 cm apart. Adult plants have 9 ~ 10 tubular leaves. The leaves are covered with wax powder and dark green. The pseudostems are thick and green. Bulbs are mostly oblate, with a longitudinal diameter of 5-6 cm, a transverse diameter of 9.5 cm, a neck diameter of about 2 cm, and a large bulb disc. The bulb skin is bright red, semi-leathery after drying, and there are 8 ~ 9 layers of fleshy scales inside, which are lavender. A single bulb weighs 250 ~ 300 grams. The scales are thick and juicy, but not tight, with large volume, a little more fiber, strong spicy taste, more water and average quality. Mid-late maturity. It is easy to rot and germinate, and its storage resistance is slightly poor. High yield, generally 2000 ~ 2500 kg bulbs per 667 m2.

Nanjing red onion: Nanjing was introduced from abroad. The plant height is 70 cm, the leaves are tubular, and the leaves are covered with wax powder and green. The upper part of the pseudostem is green, and the lower part is yellow and white. Bulbs are oblate and covered with purple-red semi-leathery scales. The fleshy scales are white with purple-red halo, and there are 2 ~ 3 scales inside. The weight of a single bulb is 100 ~ 150g. Bulbs are spicy. Stir-fry cooked food Mid-late maturity, strong cold resistance and easy germination during storage. The output per 667㎡ is about 2000 kg.

Gansu purple onion: introduced from Shaanxi in early years. Gansu and other places are cultivated. The plant height is 75 cm, and the adult plant is about 10 functional leaves. The leaves are tubular, with wax powder and dark green. Pseudostems are stout, bulbs are oblate, with a longitudinal diameter of 4 ~ 5 cm and a transverse diameter of 9 ~ 10 cm. They are covered with purple-red semi-leathery scales and have 7 ~ 9 layers of fleshy scales. It is light purple, and the weight of a single bulb is 250 ~ 300 grams, up to 500 grams. Bulbs are spicy, crisp, watery and of average quality. The growth period is about 180 days. Strong cold resistance, strong drought resistance, slightly poor waterlogging resistance and heat resistance, easy to rot. Short dormancy time, easy germination, slightly poor storage resistance, but high yield, more than 3500 kg per 667 ㎡.

Fujian purple onion: a short-day variety cultivated in Fuzhou, Fujian. The plant height is 50 cm, the plant is upright and the leaves are tubular. The leaves are covered with wax powder and dark green. The pseudostem is stout. Bulbs are oblate with a longitudinal diameter of 5cm and a transverse diameter of 8cm. The bulb skin is purplish red, semi-leathery after drying, and the fleshy scales are light purple white. The weight of a single bulb is 120g. It is rich in water, crisp in meat, spicy and slightly sweet, and rich in flavor. Suitable for frying fresh food. Late-maturing, short-day type, it takes about 160 days from sowing to harvesting. Strong resistance, easy to germinate, not resistant to storage. The yield per 667m2 is 1000kg.

Green selected red skin: Qingdao local variety. The plant height is 67 ~ 75cm. Bulbs are nearly spherical, and the epidermis is purplish red. Onion weight110 ~170g. Good quality and storage resistance. The early bolting rate is low. In Shandong, the growth period of spring sowing is about 180 days, and that of autumn sowing is 270 ~ 280 days. The output per 667 square meters is 3500 ~ 4000 kg.

(2) Yellow onion

The bulb skin is yellow, the meat is light yellow and tender, the taste is sweet and spicy, the products are resistant to storage and transportation, and the quality is good. Most of them are early-maturing and middle-maturing varieties.

Quanzhou Yellow: Introduced from Japan. The plant height is 70 ~ 80 cm, the number of leaves is 8 ~ 9, and the leaves are dark green and tubular. Bulbs are nearly spherical, with transverse and longitudinal diameters of 6 ~ 9 cm, bronzed skin, yellow-white inside and a few lateral buds. A single light bulb weighs 200-400g. Good quality, sweet taste and moderate spicy degree. Strong cold resistance and disease resistance, low early bolting rate and storage and transportation resistance. The average yield of plastic film mulching is about 4500 kg per 667 m2. This variety is a mid-early maturing and mid-sunshine variety.

High yellow: imported from Japan, the bulb is spherical, weighing 300-400g, with golden yellow skin, good luster, purple spot resistance and storage and transportation resistance. Onion yield per 667㎡ is about 6000 kg, which belongs to the medium-ripe and medium-sunny variety.

Xiong Yue onion: bred by Xiong Yue Agricultural School. The plant height is 70 ~ 80 cm, and the adult plant has 8 ~ 9 functional leaves. The leaves are tubular, with wax powder and dark green. Mature bulbs are oblate, with a longitudinal diameter of 4-6 cm and a transverse diameter of 6-8 cm. They are covered with orange semi-leathery scales and have luster. There are 5 ~ 6 layers of fleshy scales, with an average scale thickness of 0.4 ~ 0.5 cm and milky white texture. A single light bulb weighs130 ~160g, and the maximum light bulb weighs 400g. Bulbs are spicy and slightly sweet, with good quality. Immature. Strong adaptability. Strong resistance to stress and disease, salt and alkali tolerance. It is not easy to bolting prematurely and has good storage resistance. Generally, 3500 ~ 4500 kilograms of bulbs are produced per 667 square meters.

Fujian Onion: Dongshan County, Zhangzhou City, Fujian Province was introduced from the United States. The plant height is about 58 cm. Leaves tubular and oblique. The leaf length is 63 cm, the cross section is 1.5 cm, the leaf is covered with wax powder, and the leaf color is dark green. The upper part of the pseudostem is light green, the lower part is white, and the height is 10 cm. Bulbs are oblate or high-piled, covered with semi-leathery brown scales, with white fleshy scales, with a longitudinal diameter of 8-9.5 cm and a transverse diameter of 8.5 cm, and a single bulb weighs 300-320 g. Bulbs have little moisture, a pungent and sweet taste and a special aroma, and are suitable for frying cooked food and processing, dehydration and drying. Mid-late maturing varieties with short sunshine, from sowing to harvest 120 ~ 150 days. Cold tolerance, drought tolerance and disease resistance are strong, but heat tolerance and waterlogging tolerance are medium. The output per 667 square meters is 3400 ~ 4500 kg.

(3) White onion

Bulb skin is milky white and meat is white. Bulbs are small in size, low in yield, not resistant to storage and transportation, and easy to bolting, but most of them are early-maturing varieties, such as Xinjiang white onion and Jiangsu white onion.

Xinjiang white onion: Xinjiang Shihezi local variety. The plant height is about 60 cm, the spreading degree is 20 cm, and the adult plant has 14 functional leaves. The leaves are tubular, with medium wax powder and dark green. Pseudostems are stout, with green tops and white bottoms. Bulbs are oblate, covered with white scales, and membranous after drying; The inner scale is fleshy, about 15 layers, and the weight of a single bulb is 150g. The fleshy scales are crisp and sweet, slightly spicy, with little fiber and excellent quality. They can be eaten raw and cold, fried, baked and processed to dehydrate and dry onion slices. Early maturity, less water content in bulbs, thin neck and short dormancy time. Production of 2000 kilograms of light bulbs per 667 square meters.

Jiangsu white onion: cultivated varieties in Nanjing and Yangzhou, Jiangsu. The plant height is 54 ~ 77 cm, the tubular leaves are slightly thin, and the leaves are covered with wax powder and dark green. The upper part of the pseudostem is light green and the lower part is white. Bulbs are oblate or spherical. The longitudinal diameter is 6.8 cm and the transverse diameter is 9 cm. Covered by semi-leathery yellow-white scales, the internal fleshy scales are white, with 2 ~ 4 scales and buds. The weight of a single light bulb is 100 ~ 150g. Bulbs are sweet and light, and the meat is tender and crisp. They should be eaten raw or cold, or fried, roasted or dehydrated. Early maturity, strong cold tolerance, about 2000 kg per 667㎡ bulb.