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为揭示杏树营养物质含量与多毛小蠹Scolytus seulensis Murayama危害的关系,本文通过对多毛小蠹不同危害程度的杏树树叶和韧皮部中的营养物质(可溶性糖、多糖、可溶性蛋白)含量进行研究。用方差分析和相关性分析判断各个营养物质含量与多毛小蠹危害之间的关系。结果表明,小蠹危害后,能使树体一系列生理生化反应。不同受害程度的杏树树叶中营养物质含量差异不显著(P>0.05);不同受害程度的杏树韧皮部中营养物质含量变化存在显著差异(P<0.05),3种营养物质含量均表现为重度受害(50.34±0.68,21.46±1.52,11.31±0.10)>轻度受害(44.75±0.7,17.33±0.06,10.35±0.27)>健康(38.58±0.88,11.92±0.51,9.25±0.24)。对不同受害时期营养物质含量的分析表明,树叶中可溶性糖和多糖含量均呈现先下降后上升的趋势,7月时含量最低。韧皮部中可溶性糖和多糖含量均呈现先上升后下降的趋势,7月时含量最高。可溶性蛋白含量在树叶和韧皮部中表现一直呈上升趋势,8月时含量最高。经过相关性分析,受害程度与韧皮部中的营养物质(可溶性糖、多糖、可溶性蛋白)的含量在各个受害时期均呈正相关关系(r>0.834),其中与可溶性糖和可溶性蛋白在7月相关性最大(r=0.948,0.939);与多糖在8月相关性虽大(r=0.961)。杏树植株中营养物质含量越高被害率越高,且不受季节变化的影响。
In order to reveal the relationship between the apricot nutrient content and the damage of Scolytus seulensis Murayama, the contents of nutrients (soluble sugar, polysaccharide, soluble protein) in leaves and phloem of apricot with different degrees of harm were studied in this paper. ANOVA and correlation analysis were used to determine the relationship between the content of each nutrient and the damage of Beech moths. The results showed that, after beetles harm, can make a series of tree physiological and biochemical reactions. There was no significant difference in the content of nutritive substances in leaves of almond trees with different degrees of victimization (P> 0.05). There were significant differences in the content of nutritive substances in phloem of different degree of apricot trees (P <0.05), and the content of three nutrients showed severe Victims (50.34 ± 0.68, 21.46 ± 1.52, 11.31 ± 0.10)> Mild victims (44.75 ± 0.7, 17.33 ± 0.06, 10.35 ± 0.27)> healthy (38.58 ± 0.88, 11.92 ± 0.51, 9.25 ± 0.24). Analysis of the contents of nutrients in different victimization stages showed that the contents of soluble sugar and polysaccharide in leaves tended to decrease first and then increase, and lowest in July. The contents of soluble sugar and polysaccharide in phloem tended to increase at first and then decrease with the highest content in July. Soluble protein content in leaves and phloem showed an upward trend, the highest content in August. Correlation analysis showed that there was a positive correlation between the degree of victimization and the content of nutrients (soluble sugar, polysaccharide and soluble protein) in phloem at all stages of injury (r> 0.834), with the correlation between soluble sugar and soluble protein in July (R = 0.948,0.939). The correlation with polysaccharide in August was large (r = 0.961). The higher the nutrient content of the apricot plant, the higher the damage rate is and is not affected by the seasonal changes.