Selective Trainer Wang Qinglian Selection Unit Henan Institute of Science and Technology (formerly Henan Vocational and Technical Teachers College) Approved No. Henan Juvenile Cotton 2004001 Variety Source Bainong 8602 New Fuxin 3313 å®šå‘ Oriented Breeding of Offspring Characteristic Characteristics Baimian No. 1 is a high-yield, high-quality plant. The medium-maturity cotton varieties suitable for spring planting are resistant to pests and diseases. The growth period is 136~140d. Seedlings are fast, orderly, robust, and tolerant to low temperatures. Seedlings grow fast. Seedlings are large and young shoots are greenish. The leaves are medium and large, with shallow nicks, few hairs, medium light transmission, full leaf type, and dark green leaves. The average plant height is 103cm, the plant tower is loose, the first fruit node is 7.5 knots, the fruit branch angle is medium, the stem is thick, toughness is good, resistance is lodging, stem color is reddish. The buds are fast and concentrated, and their stamens are yellow. The average number of fruiting branches is 12.6, and the average number of bolls per plant is 16.9. The bolls are strong, the bolls are oval, the boll weight is 5.38g, and the cottonseed is 11.8g/100. The high score for clothing is 42%, which is 2.85% higher than that of China Cotton 41. The shell is thin and easy to collect. The average pre-frost rate was 89.45%, which was 2.0% higher than that of Zhongmian 41. The rate of infertile seeds was 9.39%, which was 0.17% less than that of Zhongmian 41. The quality of cotton fiber detected by the Cotton Quality Supervision, Inspection and Testing Center of the Ministry of Agriculture has reached the National “10th Five-Year Plan†breeding target, and the resistance to pests and diseases detected by the Cotton Research Institute of the Chinese Academy of Agricultural Sciences: Fusarium wilt disease refers to 4.72, Verticillium wilt disease refers to 23.41 Anti-cotton bollworm. The variety showed early prematurity, premature aging, high stamina, high quality, high yield, strong resistance to stress, good pest resistance, and high resistance to wilt and verticillium wilt resistance. It is a good new species with development value. Yield performance is high. According to the results of the 24-point test for two years, Baimian No. 1 lint and pre-frost lint increased by 14.42% and 16.33%, respectively, compared with the control Zhongmian 41 and the yield increased to a very significant level. Among them, in the regional test of spring cotton varieties group in 2002, the yields of seed cotton, lint, and pre-frost lint were 245.62 kg, 103.72 kg, and 95.21 kg, respectively, which were 6.97%, 12.17%, and 14.2% higher than the control variety Zhongmian 41 respectively. The yields of seed cotton, lint, and pre-frost lint were 142.8 kg, 56.2 kg, and 48.9 kg, respectively, which were 11.7%, 15.8%, and 21.8% higher than the control variety Zhongmian 41. The two-year average seed cotton, lint, and pre-frost lint The yields were 194.21 kg, 79.96 kg, and 72.06 kg in turn, which were 9.34%, 14.24%, and 18.0% higher than the control variety Zhongmian 41 respectively. In 2003, they participated in the production test. The yields of seed cotton, lint, and pre-frost lint were 130.9 kg and 52.0, respectively. The kg and 43.6 kg yields were 9.1%, 14.8%, and 13.0% higher than the control variety Zhongmian 41 respectively. Cultivation techniques 1. Planting methods: According to the climatic characteristics, plant characteristics and planting habits of the Huang-Huai cotton region, Baimian No. 1 is suitable for spring sowing, intercropping with wheat and cotton, mulching with plastic film, or seedling transplanting. All three methods can be applied. 2. Timely sowing, pay attention to broadcast a full seedlings. Live spring or mulch film coverage requires sowing on April 15~20; nutrition seedlings require sowing in early April and transplanting in late April and early May. Before sowing, we must carefully select the seeds for drying and increase the maturity of the seeds so as to strive to broadcast all seedlings. 3. Properly dense planting to promote seedling growth. The suitable density of Baimian No. 1 is 2500~3000 strains per mu. After wheat, we must eliminate the pods in time and water them early to promote the growth of cotton seedlings and guarantee the rapid development of cotton seedlings. 4. Strengthen water and fertilizer management, increase organic fertilizer and phosphorus and potassium fertilizers. Since Baimian No. 1 has the characteristics of high plants and strong bolls, it is particularly important to increase the application of organic fertilizers and phosphorus and potassium fertilizers. At the same time, it is required to apply appropriate early fertilization and increase the boll weight. 5. Pay attention to the prevention and control of pests in cotton fields other than the fourth generation of cotton bollworms and lepidoptera in cotton fields. In the early stage, attention was paid to the prevention and control of aphids, red spiders, and thrips; mid-term attention was paid to the control of insect pests and shell insect pests; and the fourth generation of cotton bollworms was controlled at a later stage. The review opinions of the variety meeting were reviewed. Baimian No. 1 was in line with the approved standards for cotton varieties in Henan Province and was approved by the 5th Henan Crop Variety Approval Committee at the eighth meeting. Suitable for planting in Henan and Huanghuai cotton districts.
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