High-yield, high-quality and semi-compact corn --- Zhaoyu 6

The maize generation hybrids jointly bred by Shandong Zhaoyuan Seed Company, the Institute of Seed and Seed, and the Shandong Provincial Seed Management Station were originally codenamed 2938 and their combination was Zhao 938296. On March 9, 2004, Shandong Province's crop varieties were approved. Validation committee approval. Second, the characteristics of characteristics: Zhaoyu No. 6 is a mid-maturing variety, Zhaoyuan spring broadcast in Shandong 130-135 days, summer live and wheat fields interplanting the whole growth period of 95-104 days. The plant type is semi-compact, with green leaf sheaths at the seedling stage, an average plant height of 275 cm, an average ear height of 118 cm, a total number of 19-20 leaf pieces, a slight pinkish filament, and an anther purple. Ear-cylindrical, ear length 18.3-25.2 cm, ear 5.1 cm, bald 1 cm, number of rows 16.6-18 rows, grain number 559-700 grains, cob light red, yellow, dent, seeded The rate is 86.3%, and the grain weight is 325.7-360 grams. In 2002, the identification results of the national designated accreditation unit were: resistance to large spot disease, high resistance to small spot disease, resistance to Curvularia spp., bacterial wilt, and high resistance to corn smut. Analysis by the Ministry of Agriculture Grain Quality Supervision, Inspection and Testing Center (Beijing) showed that the crude protein content was 12.11%, the crude fat content was 5.1%, the lysine content was 0.37%, the crude starch content was 71.8%, and the capacity was 718 g/L. III. Output Performance: Zhaoyu No. 6 participated in the regional trial of hybrid corn in Shandong Province from 2001 to 2002. In the two-year 25 trials, 21 sites increased production and 4 sites reduced production. In 2001, the average yield was 600.7 kg per mu, which was 4.6% more than that of Dandan 4, and the average per mu yield was 595.3 kg in 2002, which was 11% higher than that of Ludan 50. In 2003, he participated in the production screening test of maize hybrids in Shandong Province (Group 2). The average yield per mu was 606.4 kg, which was 11.4% higher than that of Nongda 108. In 2002, the yield of 1.5 mu high-yield fields reached 971.6 kg, and in 2003, the yield of high-yield fields reached 1,018 kg. Fourth, the cultivation points: This species is suitable for southern early spring, late autumn planting, with 3500 per acre is appropriate, the north wheat field late harvest or wheat harvest after grab live, reasonable planting density 3300-3500 strain is appropriate, high-yield cultivation can increase 4000 strains. In the management of fertilizers and waters, we mainly promoted the use of basic fertilizers, seedlings, and early-onset hair growth. This breed focuses on tasseling at the big bell mouth, and pays attention to watering at the end of the grouting period, as long as it does not delay short-term sowing of wheat. Extend the number of days of growth to achieve full maturity and increase grain weight. During the seedling stage (early unearthed), the large bell mouth period and the silking and pollination period, special attention should be paid to the timely prevention and control of pests and diseases. The production capacity of this variety is generally 300-400 kg per mu in Zhaoyuan, and 450-550 kg per mu in Inner Mongolia and Gansu. The parental error period is 5-6 days. The father's seeding is preferably planted by interval type sowing, that is, the first period of broadcast on the 6th day after mothering, and the second period of broadcast on the 9th day. :4. V. Adapt to the region: Huanghuaihai (Shandong, Jiangsu, Henan, Anhui, Beijing, Tianjin, Sichuan) and other places.

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