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干旱、水涝、弱光、病虫害等不良环境条件,直接影响棉株生长发育,并在其农艺经济性状上表现出来。如果能够掌握各个农艺经济性状在不良环境下的变化情况,则在育种和生产上进行性状评估和选择是有较大意义的。1992年,棉花生长前期干旱,中期棉铃虫大发生,后期又多阴雨,这种不良环境条件有利于研究棉花农艺经济性状的变异和稳定性。为此,我们根据大量棉花品种的农艺经济性状分别在1991年和1992年的品种次数分布情况,来探讨不良环境对陆地棉产量和纤维品质性状的影响。
Drought, waterlogging, low light, pests and diseases and other adverse environmental conditions, a direct impact on cotton plant growth and development, and in its agronomic economic traits manifested. If we can grasp the changes of agronomic economic traits in adverse environment, it is of great significance to conduct trait evaluation and selection in breeding and production. In 1992, there was a drought in the early growth period of cotton and a large occurrence of cotton bollworm in the mid-stage and more rainy later in the season. This adverse environmental condition is conducive to studying the variation and stability of cotton agronomic economic traits. Therefore, based on the distribution of the number of varieties in agronomic economic traits of a large number of cotton varieties in 1991 and 1992, we investigated the impact of adverse environment on the yield and fiber quality traits of upland cotton.