盐胁迫下外施脯氨酸和磷肥对青杨雌雄幼苗生长及生理特性的影响

Effects of Exogenous Proline and Phosphate Fertilizer on Growth and Physiological Traits of Female and Male Populus cathayana Seedlings under Salt Stress

摘要:

为探讨盐胁迫下外源脯氨酸和磷肥的作用，对不同处理的青杨雌、雄幼苗的生长和生理生化指标进行了研究。结果表明：盐胁迫会影响青杨雌、雄植株的生长和生化物质含量，但喷施脯氨酸和根施磷肥均能在一定程度上提高雄株幼苗的耐盐性，而对雌株耐盐性的影响并不明显。因此，在盐碱地改良时宜选用抗逆性较强的雄株进行种植，同时可考虑选用经济适用、操作方便的磷肥来提高植株耐盐性。

Abstract:

In order to understand the effects of exogenous proline and phosphate fertilizer under salt stress, the growth and physiology index of Populus cathayana seedlings were studied with different treatment. The results showed that the growth and biochemical substances contents in female and male seedlings were affected under salt stress, while the application of proline and phosphate fertilizer could improve the salt tolerance of male seedlings to a certain extent, but it was not obvious on female seedlings. Therefore, it is better to choose male seedlings with strong stress resistance in the improvement of saline alkali land, and at the same time, it is considered to choose phosphate fertilizer for enhance salt tolerance of plants because of affordable and easy to use.