Introduction of Qiangshuo 168 Maize Varieties (Brief Introduction of Seed Yield Traits of Qiangshuo Maize in National Audit)

Qiangshuo 168 corn seeds (Guoyuanyu 20 180087) can be sown in spring or summer. The growth period of spring sowing area is generally about 135 days, and that of summer sowing area is generally about 133- 145 days. Qiangshuo 168 is suitable for planting in the place where the accumulated temperature reaches 2800℃. Good adaptability, strong lodging resistance, high yield, mature living trees and long standing time, especially high resistance to southern rust.

Brief introduction of Qiangshuo 168 corn seeds

Qiangshuo 168 is a new maize variety with high yield, which is easy to be bred. It has passed the examination and approval of the main producing areas of Huanghuaihai, with an average yield of 657.5 kg per mu.

Qiangshuo 168 maize variety can be planted not only in the main corn producing areas in northern China, but also in the main corn producing areas in southwest China, becoming one of the most widely planted maize varieties.

This maize variety has the advantages of red cob, yellow grain and half-horse tooth shape, and has the characteristics of good adaptability, strong lodging resistance, high yield, mature living trees, long standing time and so on, especially high resistance to southern rust.

Brief introduction of national trial of Qiangshuo 168 maize varieties

Qiangshuo 168 maize seed passed the examination and approval in Liaoning Province on 20 17 (No.:20170031); 20 18 passed the examination and approval of Henan province (No.:20 1800 12).

In addition, in 20 18, it passed the national examination of northeast spring corn area (national examination: 20 180087) and southwest spring corn area (national examination: 20180087); In 20 19, it passed the examination and approval of Huanghuaihai Summer Maize Region. The national trials are as follows:

ExaminationNo.: Guo Shen Yu 20 180087

Variety name: Qiangshuo 168

Applicant: Yi

Breeders: Yi, Wu Guisong, Chen Zengqi, Gao Wei, Liu Guijie, Li Bing, Wang Ming, Li Hanze and Xin Chen.

Variety source: N547× Tai 548

Main characteristics of Qiangshuo 168 maize varieties

① Maturity

The growth period of spring sowing Qiangshuo 168 in Liaoning Province is 129 days, which is about 1 day shorter than that of the control variety Zheng Dan 958, and it belongs to the middle-late maturity maize hybrid.

② Plant types

Qiangshuo 168 has a compact plant type, with a plant height of about 3 1 1cm, an ear position of about 127cm and a plant type of about 22 leaves.

The ear of this maize variety is tubular, the ear length is about 2 1.5cm, the number of rows per ear is 16- 18, and the ear axis is red.

③ Grain

The seeds of this corn variety are yellow, the seed type is half horse teeth, and the weight of 100 seeds is about 36.3 grams.

The seed setting rate, lodging rate and lodging rate of Qiangshuo 168 maize were 85.5%, 0.9% and 1.5%, respectively.

④ Quality determination

The results showed that the bulk density of Qiangshuo 168 was 765g/L, the crude protein content was 9. 1%, the crude fat content was 4. 14%, and the crude starch content was 75.34%.

⑤ Disease resistance

After artificial inoculation, Qiangshuo 168 is resistant to Great Leaf Spot (1-3), Gray Leaf Spot (1-7), Curvularia leaf spot (1-3) and stem rot (0-5.8% incidence).

Yield performance per mu

Qiangshuo 168 is a new maize variety with strong adaptability, disease resistance and high yield.

Qiangshuo 168 corn seeds were planted in southwest China, with an average yield per mu 1243 kg; Summer sowing in Huang-Huai-Hai area, the average yield per mu 13 14 kg, the highest yield per mu can reach 1798 kg; The average yield per mu is1652kg, and the highest yield per mu is 2480kg.

Suitable planting area

Qiangshuo 168 corn seeds are suitable for planting in three major corn producing areas in Northeast China, Huanghuaihai and Southwest China, and can also be planted in Liaoning, Henan, Gansu and other provinces.

Key points of cultivation techniques of Qiangshuo 168 maize.

Qiangshuo 168 is not easy to be planted too closely, and it is planted in southwest China, generally about 3000 plants per mu; Planting in East China and North China, about 4000 plants per mu; Generally, 4200 ~ 4500 seedlings are protected per mu in summer sowing in Huang-Huai-Hai area.

In field management, farmers should pay attention to preventing lodging, and pay attention to preventing and controlling diseases and pests such as southern rust, aphids, corn borer and smut in the middle and late growth period.