苗期干旱胁迫及复水对春玉米叶片光能利用特性及抗氧化酶活性的影响
Shuitu Baochi Xuebao, 2018 通过盆栽进行春玉米控水试验，设置3个控水水平(正常供水、中度干旱、重度干旱)、2个水分控制时段(干旱、复水)，研究苗期不同程度干旱胁迫及复水对春玉米叶片光响应曲线、CO2响应曲线及曲线拟合参数和抗氧化酶活性的影响。结果表明：干旱胁迫条件下春玉米叶片对光辐射的利用能力下降，随着干旱胁迫程度增加，叶片最大净光合速率(Pnmax)、表观量子效率(AQY)、光饱和点(LSP)、最大电子传递速率（Jmax）、最大羧化速率(VCmax)均显著下降，而光补偿点(LCP)、超氧化物歧化酶(SOD)、过氧化物酶(POD ...
柳燕兰, 郭贤仕, 马明生
doaj
Shuitu Baochi Xuebao, 2004 通过分析克拉玛依农业开发区水土性状、荒漠植被演替规律和群落多样性,了解到区内植物的生长更新主要靠大气降水来维系,而土壤理化指标中的有机质、全N和全K含量增加是植物群落发展多样性的胁迫因素。与之相反,一定限度下的较高pH和粒度值,则可促进植物多样性水平的提高。分析结果还表明,土壤的全盐、全P和水分是影响植物多样性的潜在因素。
钱亦兵 周华荣 徐曼 蒋进 王雪芹 李东梅 赵从举
doaj
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