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建国以来,在环境条件和商品选择的作用下,随着育种水平的进步,南阳地区大豆品种进行3次大的更替,产量由1953年的495公斤/公顷提高到1991年的1560公斤/公顷。农艺性状也发生了一定变化。分析和认识这些变化趋势,将有助于大豆品种选育、利用和生产水平的提高。因此,在1984—1985年试验研究基础上,1990年在控制条件下对各时期的大豆代表品种进行比较,旨在明确农艺性状的演变趋势,揭示品种更替中影响大豆产量的主要产量构成因素,为及时组织品种更替等提供理论依据。
Since the founding of the People’s Republic of China, under the influence of environmental conditions and commodity selection, soybean varieties in Nanyang have been undergone three major alternations with the improvement of breeding standards. Their output increased from 495 kg / ha in 1953 to 1560 kg / ha in 1991. Agronomic traits have also undergone some changes. Analyzing and understanding these trends will help improve the selection, utilization and production of soybean varieties. Therefore, based on the experimental studies of 1984-1985, the representative soybean varieties under different control conditions were compared in 1990 to clarify the evolution trend of agronomic traits and to reveal the main yield components that affect the soybean yield during the variety alternation. Provide a theoretical basis for timely replacement of varieties.