棉苗耐湿性鉴定及其与气象因子的关系

Relationship between cotton seedling's humidity resistance and climatic factors

陆地棉中棉１２号苗期耐湿性鉴定结果，１９９２～１９９４年３年间的死苗率均在１０％以内，表现为耐湿；１９９５年死苗率在１０％～２５％之间，表现为较耐湿。表明棉苗的耐湿性除受遗传因素影响外，也与环境因素有关。

In this paper, the seedling's humidity resistance of upland cotton Zhongmian No.12(Gossypium hirsutum L.) had been studied. From 1992 to 1994, the death rate of cotton seedlings was no more than 10% and showed resistance to humid damage; In 1995, the death rate was 10% to 25% and showed relatively resistance. Therefore, we deduced that the humidity resistance of cotton seedlings was influenced by climatic factors besides genetic factors. Further analysis showed that the humidity resistance of cotton seedlings had close relationship with air relative humidity in the same year.