论文部分内容阅读
本研究采取随机区组排列,分析育苗方式(水浮育苗、营养钵育苗、穴盘育苗)与耕作方式(翻耕、旋耕、免耕)对棉花生理特性的影响。结果表明:在湖南气候条件与栽培技术体系下,影响叶片光合速率、叶绿素含量、可溶性蛋白质(PRO)含量、丙二醛(MDA)含量的主导因子是育苗方式。水浮育苗保持较高的叶绿素、可溶性蛋白质、可溶性糖含量和较低的丙二醛含量,果枝叶片光合速率高、叶面积指数高、干物质积累多、生殖器官与营养器官比值趋于合理,营养钵次之,穴盘育苗最差,翻耕保持较高的叶绿素、可溶性蛋白质、可溶性糖含量和较低的丙二醛含量,果枝叶片光合速率高、叶面积指数高、干物质积累多、生殖器官与营养器官比值趋于合理,旋耕次之,免耕最差,水浮育苗和翻耕组合有利于增强棉株生理机能,延缓棉株衰老。
In this study, randomized block array was adopted to analyze the effects of seedling raising methods (water floating seedling, seedling raising nutrition pot, plug seedlings) and tillage (tillage, rotary tillage and no tillage) on physiological characteristics of cotton. The results showed that under the climatic conditions and cultivation techniques in Hunan, the dominant factors affecting leaf photosynthetic rate, chlorophyll content, soluble protein (PRO) content and malondialdehyde (MDA) content were the breeding methods. Water floating seedlings maintained high chlorophyll, soluble protein, soluble sugar content and lower content of malondialdehyde, high photosynthetic rate of fruit branch leaves, leaf area index, dry matter accumulation, genital and vegetative organs ratio tends to be reasonable, Followed by the nutrition bowl, the worst seedling, the higher tillage retention of chlorophyll, soluble protein, soluble sugar content and lower content of malondialdehyde, leaf photosynthetic rate, leaf area index, dry matter accumulation, The ratio of reproductive organs to vegetative organs tended to be reasonable, followed by rotary-tillage followed by no tillage, and the combinations of floating seedling and tillage were conducive to enhancing the physiological functions of cotton plants and slowing the senescence of cotton plants.