What are the main high-yielding maize seed varieties?

High-yielding maize seed varieties

The main varieties of high-yield maize seeds are Longgao L2, Liangyu 99, Denghai 6702, Delinong 988, Zhongdan 909, Jundan 29 and Tunyu 808. the requirements of planting environment for different varieties of corn are also different. below, we will make a brief description of the characteristics of these types of corn seeds.

1. Longgao L2

Longgao L2, a high-yield maize variety, is famous for its grain yield of 667 tons per mu and iron stalk lodging resistance. under good conditions of high water and fertilizer, Longgao L2 has created a high yield record of 32000 jin per hectare, which is praised by the industry.

The maize seed Longgao L2 was bred by the High yield breeding Room of Maize Research Institute of Heilongjiang Academy of Agricultural Sciences and approved by Heilongjiang Variety approval Committee in 2004. The approved name of the variety is Longgao L2 and the trade name is Baoyulonggao L2.

This maize variety adapts to a wide area, the growth period is about 122 ℃, and the approved accumulated temperature is 2350 ℃. Under the condition of accumulated temperature above 2500 ℃, it will obtain ideal dehydration effect and maturity, so it is suitable for planting in the first and second accumulated temperate zone of Heilongjiang Province. The seedling growth is robust, the plant height is about 2.8 meters, the ear position is 95 cm, the leaf is raised, the plant type converges, the stalk is strong, the living stalk is mature, it has good drought resistance and stress resistance, and is highly resistant to maize leaf spot, head smut, maize smut and bacterial wilt. Fruit ear cylindrical, 18-22 rows, about 45 grains per row, 100-grain weight 35 grams, grain horse tooth type, orange, bulk weight 751g, horny grain, suitable cultivation conditions, the yield can reach more than 1000 kg.

In the high-yield field, the average yield of Longgao L2 is more than 30000 jin, which is much higher than that of the varieties with the same maturity, which has created a record of high yield of corn in Heilongjiang Province. the commercial grain is horny grain, the rice quality is hard, the price is relatively high, and the commercial grain is golden in color. it is suitable to be used as food raw material, feed and wine-making raw material, and this variety has aroused great enthusiasm from people in the industry and farmers all over the country.

2. Liangyu 99

[approval number] National trial Jade 2012008.

Liangyu 99 is a density-tolerant variety with spring sowing growth period of about 135 days, plant height of 270 cm, ear position of 100 cm and compact plant type. Fruit ear cone type, ear length 400px, ear row number 16-18 rows, yellow grain, horse tooth type, quality, 100-grain weight 36.5g, red axis. For planting in plots with medium fertility and above, spring sowing is suitable for planting in most late-maturing corn areas in Liaoning, with a suitable density of 4000,000 plants / mu and a general yield of 700kg per mu.

Liangyu 99 can be planted with high density, with 4500 murmur5000 trees per mu, with uniform ears inside and outside, no empty pole and no protruding tip. High resistance to lodging, thick stalk, resistance to grade 8 gale. High resistance to bacterial wilt, head smut, rough dwarf disease and dwarf mosaic virus. The rice is of good quality and high yield. Generally, the yield per mu is 900kg, and the high yield is more than 1100 kg, which is 15-20% higher than that of Zhengdan958.

3. Denghai 6702

[approval number] National trial Jade 2011009.

[approval opinion] the variety conforms to the national maize variety approval standard and has been approved. It is suitable for summer sowing in Shandong, Baoding and the south of Hebei Province, Henan (except Pingdingshan and Zhoukou), Guanzhong Irrigation District of Shaanxi (except Xianyang), northern Anhui, northern Jiangsu and Yuncheng, Shanxi. Pay attention to the prevention and control of stem rot, powdery mildew and Curvularia leaf spot in areas with high incidence.

4. Delinong 988

[approval number] National trial Jade 2011010.

[approval opinion] the variety conforms to the national maize variety approval standard and has been approved. It is suitable for summer sowing in Shandong, Henan (except Zhengzhou and Zhoukou), Baoding and the south of Hebei (except Shijiazhuang), northern Jiangsu and Guanzhong irrigation area of Shaanxi. Pay attention to prevent lodging, use with caution in areas with high incidence of tumor powdery mildew.

5. Zhongdan 909

[approval number] National trial Jade 2011011.

[approval opinion] the variety conforms to the national maize variety approval standard and has been approved. It is suitable for summer sowing and planting in Henan, Baoding and southern areas of Hebei, Shandong (except Binzhou), Guanzhong Irrigation District of Shaanxi, Yuncheng of Shanxi, northern Jiangsu and northern Anhui (except Huaibei City). Use with caution in areas with high incidence of powdery mildew.

6. Dredging sheet 29

[approval number] National trial Jade 2011012.

[approval opinion] the variety conforms to the national maize variety approval standard and has been approved. It is suitable for summer sowing in Henan (except Nanyang and Zhoukou), Baoding and the south of Hebei (except Shijiazhuang), Shandong (except Zaozhuang), Xianyang in Shaanxi, Yuncheng in Shanxi, northern Jiangsu and Fuyang in Anhui. Pay attention to prevent lodging, use with caution in areas with high incidence of tumor powdery mildew.

7. Tunyu 808

[approval number] National trial Jade 2011013.

[approval opinion] the variety conforms to the national maize variety approval standard and has been approved. It is suitable for summer sowing in Henan, Hebei Baoding and south areas (except Shijiazhuang), Shandong (except Yantai), Guanzhong Irrigation District of Shaanxi and Yuncheng of Shanxi Province. Be careful not to lodge.

How can we identify high-yield corn seeds?

1. Improve the identification ability of maize seed quality.

① seed selection principle: before selecting seeds, we should first make clear the type of seed selection and understand the local natural environmental conditions, such as soil quality, accumulated temperature, precipitation, light, frost-free period and so on. According to the actual local environmental conditions, the maize seed varieties suitable for the local environmental characteristics were selected. In addition, in the selection of corn seeds, we should pay attention to the selection of large-scale seed sales enterprises with good reputation, and pay attention to whether the identification of seed packaging is complete and effective and whether it meets the actual requirements of the state.

② identification of seeds: learn to identify corn seeds, especially for the identification of aged seeds, generally old seeds are stored and dried for a long time, the color of the seeds is often dark, the embryo area is hard, put your hand into the seed pile, there will be powder on your hands. By contrast, the new corn seeds are bright in color and full in shape. In addition, we can identify the mixed corn seeds by their appearance. In general, the size and shape of the maize seeds in a seed area are relatively uniform. If there is a large morphological gap between the maize seeds, we should pay attention to whether there is a mixing phenomenon.