No. 29 Zhongmiansuo is a new insect-resistant hybrid cotton variety suitable for spring planting or spring planting. It combines insect resistance, high yield, and disease resistance in one body, and it is widely adapted to increase production significantly. From 1995 to 1996, he participated in the regional cotton test and production test of insect-resistant cotton. In the eight provincial tests, the output of lint for two years ranked first, and in 1998 it passed national examination and approval. No. 29 Zhongmiansuo has a growing period of 130-135 days. The plant type is moderate, the leaves are medium, and the leaves are dark green. Strong bells, smooth leaves, 5 grams of bolls, and 40% of clothes. Rapid emergence, strong seedlings, early-onset, stable growth in the budding period, high yield potential. In 2004, it was awarded the Agriculture, Animal Husbandry and Fishery Harvest Award. Zhongmian 29 (Zhongkangza No.1) is a high-yield, high-quality, insect-resistant and disease-resistant plant of the Chinese Academy of Agricultural Sciences, where cotton research P1 and RP4 (bred from the Chinese 422 strain) were used as parents. The hybrids, from 1995 to 1996, took part in the national cotton-resistant cotton regional trials and performed outstandingly in the regional trials. They were approved by the National Varietal Approval Committee in January 1998. In March and May of the same year, they were approved by the Variety Approval Committee of Shandong Province and Anhui Province respectively. 1 The characteristics and characteristics of early maturity, the growth period of 130 to 135 days, moderate plant type, medium leaf, strong bell, early maturity, smooth boring, boll weight 5.4g, clothing 40%, fast emergence, strong, early Hair, strong growth potential, stable growth during the budding period, high yield potential. 2 Insect resistance and disease resistance can effectively reduce the occurrence and damage of H. armigera and B. boehmeriae, and show good toxicity to the larvae of each generation of insect pests, especially young instars. Field plot trials and indoor leaf feeding tests showed that the mortality rate of young larvae was over 90%. The resistance to the second generation of cotton bollworm is better than the third generation and the fourth generation, and generally can reduce the number of control or the amount of 60% to 70% of the dose. In addition, due to the reduction in the number of pesticide control, protection of natural enemies of pests, especially the increase of ladybugs, has a significant inhibitory effect on cotton fuze. According to the identification of the Plant Protection Office of the Cotton Research Institute of the Chinese Academy of Agricultural Sciences, the blight of the hybrid was 2.7, Verticillium wilt disease was 19.7, which was a type of disease resistance. 3 High-yield In the regional test of national insect-resistant cotton from 1995 to 1996, the two-year test results ranked first, and the increase in production reached a very significant level. In 1995, the average yield per unit area was 1299kg/hm2 and 1075.5kg/hm2, respectively, which was 47.7% and 79.7% higher than the control (Yangmian No. 3 in the Yangtze River Basin and No. 17 in the Yellow River Basin). In 1996, the average yield per plant was 1272 kg/hm2 and 1210.5 kg/hm2, respectively, which was 15.6% higher than that of the control (Yangmian No. 3 in the Yangtze River Basin and No. 19 in the Yellow River Basin). And 39.9%, an average increase of 3664.5 yuan/hm2 over the control. In 1996, production trials were conducted at 10 points in the south of Anhui, Hubei, and Jiangxi. The average yield was 16.3% higher than that of the control Qinmian No. 3, and the production increased significantly; 1997 in Henan and Shandong. The 12-point production test in Hebei Province showed an average increase of 34.5% over the control of the Cotton Industry 19, reaching a very significant level. 4 Fiber quality Samples were collected from 13 test sites nationwide in 1996, and were examined by the National Fiber Quality Supervision and Inspection Center: average length 29.53mm, length 32.14mm, linear density 176.8m/tex, single fiber strength 3.85gf, and maturity coefficient 1.61. The test results of the Cotton Quality Inspection Center of the Ministry of Agriculture were: Stronger than 24.2gf/tex, 12.4mm long, and Mike had a value of 4.8.
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