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以新疆常用的扁桃砧木石头扁桃和毛桃的1年生实生苗为材料,设置土壤相对含水量分别为田间最大持水量的100%、80%、60%、40%和20%5个处理,研究了不同水分胁迫条件对其干物质和叶绿素含量的影响。水分胁迫处理第10、20、30天后取样,测定其叶绿素含量;在水分胁迫处理第30天取样测定其干物质含量。结果表明:2个供试品种对水分胁迫的反应一致。在土壤相对含水量为80%时,总干物质含量和叶质量比最高,土壤相对含水量较多或较少都会减少干物质的积累,石头扁桃总干物质含量和叶质量比的下降幅度大于毛桃。根质量比和根冠比在土壤相对含水量为80%时最低,随着水分胁迫程度的加剧,根质量比和根冠比升高,石头扁桃的升高幅度大于毛桃。在土壤相对含水量为80%时叶绿素a和叶绿素(a+b)的含量最高,随着胁迫程度的加剧和时间的延长,叶绿素a和叶绿素(a+b)的含量降低,石头扁桃的降低幅度大于毛桃。
In this paper, 5-year-old seedlings of 1-year-old seedlings of almond and peach, which are commonly used in Xinjiang almond, were used as materials. The relative water content of soil was set as 100%, 80%, 60%, 40% and 20% Effect of Different Water Stress on Dry Matter and Chlorophyll Content. The samples were taken after the 10th, 20th and 30th days of water stress treatment to measure the chlorophyll content. The dry matter content was measured on the 30th day after the water stress treatment. The results showed that the responses of two tested cultivars to water stress were consistent. When the relative soil water content was 80%, the total dry matter content and the leaf mass ratio were the highest, while the relative soil moisture content was more or less, the dry matter accumulation was reduced. The total dry matter content and leaf mass ratio decreased more than Peach. Root mass ratio and root / shoot ratio were the lowest when soil relative water content was 80%. With the increasing degree of water stress, root mass ratio and root / shoot ratio increased, and the increment of stone almond was larger than that of peach. The contents of chlorophyll a and chlorophyll (a + b) were the highest when the soil relative water content was 80%. The content of chlorophyll a and chlorophyll (a + b) decreased and the content of stone almond decreased as the degree of stress increased and the time prolonged Magnitude than peaches.