论文部分内容阅读
本试验于2006年5月至2007年10月,在宁夏盐池县四墩子行政村模仿天然草原,通过测定紫花苜蓿叶绿素、脯氨酸、POD活性、丙二醛含量来探讨荒漠草原中紫花苜蓿的抗逆性机制。结果表明,紫花苜蓿叶绿素含量在轻度放牧(LG)区出现了最大值,以后则随着放牧强度的增大而降低。脯氨酸含量、POD活性、丙二醛含量则随着放牧强度的增大而升高,在雨热条件较好的季节,缓解了放牧对苜蓿造成的伤害。
In this experiment, from May 2006 to October 2007, we simulated the natural grassland in Si Dunzi administrative village, Yanji County, Ningxia Province. The chlorophyll content, proline content, POD activity and malondialdehyde content in alfalfa were determined to study the effects of alfalfa Mechanism of resistance. The results showed that chlorophyll content of alfalfa appeared maximum in mild grazing (LG) area and then decreased with increasing grazing intensity. Proline content, POD activity and malondialdehyde content increased with the increase of grazing intensity, and alleviated the damage to alfalfa caused by grazing in the season with good heat and rain condition.