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[目的]比较华山松健康树皮、感疱锈病树皮中矿质元素含量的差异,为深入了解该病害对华山松的影响机理、探索水肥控制该病害的新途径提供理论依据。[方法]采用电感耦合等离子体发射光谱法(ICP-OES)测定华山松感染疱锈病(Cronartiumribicola)后树皮矿质元素含量的变化。[结果]从华山松健康树皮中检测出矿质元素45种,从感染疱锈病树皮中检测出矿质元素46种。这些矿质元素中植物生长必需矿质元素均为14种,其他矿质元素31种(感病后为32种)。华山松感病后矿质元素总量降低了15.77%,其中,植物生长必需元素降低了15.54%,其他元素含量降低了17.07%,其中Ca含量减少最多,减幅约达75%。含量大小顺序也发生了变化,健康树皮中为Na>Ca>B>K>Si>Mg>S>P,而在感病树皮中为Na>B>K>Ca>Mg>P>Si>S。[结论]该研究结果为施用矿质元素控制疱锈病病害奠定了基础。
[Objective] The aim of the study was to compare the differences of the mineral elements in the barks of the healthy barks and the blister rust barks of Huashanus pineus, and to provide a theoretical basis for further understanding of the mechanism of the disease on Pinus armandii and for exploring new ways to control the diseases. [Method] The content of mineral elements in the bark of Pinus armandii was determined by inductively coupled plasma atomic emission spectrometry (ICP-OES). [Result] Forty - five mineral elements were detected from the healthy barks of Pinus armandii, and 46 kinds of mineral elements were detected from the barks infected with blister rust. Among these mineral elements, there are 14 kinds of mineral elements necessary for plant growth, and 31 kinds of other mineral elements (32 kinds after being infected). The total amount of mineral elements in Pinus armandi decreased 15.77%, of which the essential elements for plant growth decreased by 15.54% and the contents of other elements decreased by 17.07%. The content of Ca decreased the most, a decrease of about 75%. The order of content also changed. The healthy barks were Na> Ca> B> K> Si> Mg> S> P, while in the diseased bark, Na> B> K> Ca> Mg> P> Si > S. [Conclusion] The results of this study laid the foundation for controlling mineral diseases of blister rust by mineral elements.