Wanmai 44

1. Variety source: Wanmai 44 (formerly 96932) was selected by crop Research Institute of Anhui Academy of Agricultural Sciences. The parent combination is Zhengzhou 891 × Zhengzhou 831. It was examined and approved by Anhui Variety approval Committee on September 1st, 2001 (Variety approval No.: Wanpin Review 01020322). Second, yield performance and suitable planting areas: in 1998-2000, the average yield per mu was 426.9 kg and 526.8 kg respectively, which was 15.4% and 5.3% higher than that of Yumai 18-64, and ranked second among the tested varieties in two years. the average yield in two years was 10.4% higher than that of Yumai 18-64. It passed the regional test in August 2000. In 2000-2001, he participated in the production test of the spring group of Huaibei tablet, with an average yield of 487.2 kg per mu at five points, an increase of 8.3% over the control Yumai 18-64, ranking first among the tested varieties. It passed the production test in August 2001. The level of field yield in normal years is 400-550 kg per mu. This variety is suitable for middle and late cropping in Huaibei and middle-high fertilizer and water plots along Huaihe River in our province. Third, the characteristics: weak spring, seedling semi-grape, strong tillering ability, vigorous growth at seedling stage, leaf uprush after turning green, leaf color thick green. The three factors of yield are more coordinated than the general effective panicles of 35-400000 per mu, 34-40 grains per panicle and 38-42 grams of 1000-grain weight. The spike is oblong, the spikelets are closely arranged, and the spike layer is generally uniform. It has good cold resistance and the ability to resist various diseases is the same as that of Yumai 18-64. The plant height is 75-85 cm, and the lodging resistance is strong. The ripening period is the same as Yumai 18-64, which is 2-4 days earlier than that of Wanmai 19. White grain, grain powdery ~ half-horny, good gloss and plumpness, bulk density 780-810 g / L. Its quality is tested by the grain quality and product quality supervision, inspection and testing center of the Ministry of Agriculture (Harbin): cutin rate 30.1ml, water absorption 56.0%, formation time 2.2min, stability time 7.2min, softening degree 70B.U, evaluation value 50, maximum resistance 428B.U, extensibility 14.9cm, stretching area 87.7 square cm, steamed bread volume 460ml, steamed bread score 90. 4. Cultivation points: the sowing date of this variety is flexible, and it can be sown from the middle of October to the first ten days of November, and the best sowing time is from October 15 to the end of October. The basic seedlings per mu were sowed 10-150000 in mid-October, 15-200000 in late October and 20-250000 in November. The main way of sowing is strip sowing. Before sowing, 3-4 square of soil fertilizer, 8-12 kg of pure nitrogen, 5-6 kg of phosphorus pentoxide and 4-6 kg of potassium oxide were applied per mu. At jointing stage, a small amount of nitrogen fertilizer should be applied according to seedling condition. Jinggangmycin and Fenning were sprayed at the early jointing stage, and Fenning was sprayed at booting-heading stage to prevent diseases. Authorized by Anhui Academy of Agricultural Sciences, Wanmai 44 is exclusively produced and operated by Hefei Fengle seed Co., Ltd.