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Zhongyu 2

Approval number:   Chuan Yu 2013022
Breeding unit: Zhong Yan seed industry Limited by Share Ltd.
Characteristics: The whole growth period of spring maize sowing in Liangshan was 145 days, compared with that of Chuan Dan 15. The first leaf sheath is purple and the tip shape is round to spoon shaped. The average plant height is 259cm, the spike height is 123cm, and the total number of leaves per plant is 19-20. In the angle of leaf and stem, there is no degree of "stem", and leaf sheath is green. In the number of lateral branches of male spikelet, the lateral branches of male tassel were slightly curved in the angle of male spindle and branch. In the length of the main branches of the tassel, the color of the base of the male panicle was purple, and the glumes were purple and purple. The shape of the ear is intermediate type, the grain type is hard grain type, the top color of the seed is orange, the color of the back is orange, the color of the cochlea is white, and the grain is straight. The average panicle length is 18.2 cm, the row number of rows is 17.8 rows, the row number is 34.8 grains, and the 100 grain weight is 29.6 grams. Grain weight 738g/L, crude protein (dry basis) 9.6%, crude fat (dry basis) 4.5%, crude starch (dry basis) 71%, lysine (dry basis) 0.30%. After inoculation, it was resistant to big leaf spot and sheath blight.
Output performance: In 2010, the average yield of A group in Liangshan area was 610.1 kg, which was 9.7% higher than that of control Chuan Dan 15, and the yield increased by 7. The average yield per mu in 2011 was 635.3 kg, which was 15.8% higher than that of the control Chuan Dan 15, and the yield of 7 pilot 6 points increased. In 2011, the average yield per mu was 605.2 kg, which was 7% higher than that of the control Chuan Dan 15, and the yield increased by 7.
Main points of Cultivation: Yichun sowing is usually done in the middle of March to the middle of April. Planting density was 4000-4300 plants per mu. Apply base fertilizer, apply fertilizer and jointing fertilizer, apply heavy fertilizer, prevent pests and diseases and harvest in good time.
Suitable planting areas: Mid mature corn planting area in Liangshan Prefecture, Sichuan province.

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