论文部分内容阅读
选择新疆阿克苏市柯柯牙典型的5种果树:红枣(Ziziphus jujuba)、核桃(Juglans regia)、苹果(Malus pumila)、葡萄(Vitis vinifera)和香梨(Pyrus sinkiangensis),并对树种叶面滞尘量及其对水分利用效率的影响进行研究。结果表明,5种果树滞尘能力为葡萄5.37mg/cm2>香梨4.55mg/cm2>红枣3.88mg/cm2>核桃3.03mg/cm2>苹果0.92mg/cm2。水分利用效率为葡萄(2.646μmol·mmol-1)>香梨(1.810μmol·mmol-1)>核桃(1.698μmol·mmol-1)>红枣(1.359μmol·mmol-1)>苹果(1.043μmol·mmol-1)。通过分别比较5种果树滞尘量与水分利用效率之间的相关性得出,5种果树的滞尘量与净光合速率、蒸腾速率、水分利用效率之间并无显著相关关系。表明果树在长期适应极端环境的过程中,形成了自身的调节机制,滞尘量对果树的水分利用效率的影响不大。
A total of five typical fruit trees were selected from the group of Kekeya, Aizu, Xinjiang: Ziziphus jujuba, Juglans regia, Malus pumila, Vitis vinifera and Pyrus sinkiangensis, Amount and its effect on water use efficiency. The results showed that the dust-holding capacity of the five kinds of fruit trees was 5.37mg / cm2 for grapes, 4.55mg / cm2 for pear, 3.88mg / cm2 for jujube, 3.03mg / cm2 for walnut and 0.92mg / cm2 for apple. The water use efficiency of grape (2.646μmol · mmol-1)> pear (1.810μmol · mmol-1)> walnut (1.698μmol · mmol-1)> red dates (1.359μmol · mmol- mmol-1). The results showed that there was no significant correlation between the dust holding capacity and net photosynthetic rate, transpiration rate and water use efficiency of five kinds of fruit trees by comparing the dust-holding capacity and water use efficiency of five kinds of fruit trees respectively. The results showed that during the long-term adaptation of fruit trees to extreme environments, fruit trees formed their own regulatory mechanisms, and the amount of dust-holding had little effect on the water use efficiency of fruit trees.