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叶面喷施稀土可明显地促进软枣猕猴桃幼苗的生长,增加幼苗的干物质重量(0.4~15.28%),提高叶片叶绿素含量(9.8~21.7%)和硝酸还原酶的活性(5.63~48.35%),降低了细胞膜的透性,即增加了幼苗抗低温的能力。稀土对软枣猕猴桃幼苗的这些良好效应,为野生植物引种栽培,应用稀土肥料提供了依据。在稀土处理中,以500ppm的效应为最佳。 相似文献
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Concentration-time profiles of ~(125)I-labeled recombinant human interleukin-3 (125IrhIL-3) were de-termined by reverse phase high performance liquid chromatography (RHPLC) after intravenous and subcutaneous ad-ministration of the drug in 16 rhesus monkeys. The initial and terminal T1/2 in plasma after intravenous of 30 μg/kg were (0. 15 ±0.13) and (2. 21 ± 0. 59) h, respectively. Terminal half-lives after 30, 90 and 180μg/kg subcutaneous (s.c.) injections were 2. 0-3.8 h. Area under concentration-time curves (AUC) following s. c. were roughly in-creased with dose, while CL5 were similar among different dosages. The absorption rates were dependent on concentra-tion at injected site. Bioavailability was about 0.7 after s.c. Rapid biodegradation was found in plasma. Distribution profiles of total radioactivity were as follows: the highest level was found in urinary system; levels in bile-enteric sys-tem, lymph nodes, bone marrow and spleen were near to that in plasma, and level in brain was the lowest 相似文献
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