以下为句子列表：
英文: This paper describes the impact of rotation and succession planting on seedling growth of Cunninghamia lanceolata, Ziziphus jujuba var. spinosa and Magnolia officinalis etc and its corresponding soil fertility in the forestry nursery.
中文: 摘要研究了林业圃地连作与轮作培育杉木、酸枣、厚朴等苗木的生长状况及土壤肥力的变化。
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英文: Method:Vitamin C was extracted from Ziziphus jujuba by HAc,and the osazone was formed by dealing with vitamin C. Its absorption was measured in 90 nm by spectrophotometry.
中文: 方法:用乙酸从大枣中提取维生素C,由维生素C形成脎,于波长90 nm处测定脎的吸光度。
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