论文部分内容阅读
伊犁绢蒿是新疆蒿属荒漠草地常见的草地建群种之一,春季担负着家畜体膘的恢复和产羔育幼,秋季家畜要在该草地上贮存更多的能量和为繁衍下一代而进行配种。以蒿属荒漠草地为基础,以伊犁绢蒿为研究对象,结合野外定点取样,分析了伊犁绢蒿根、茎、叶中可溶性糖含量在不同刈割强度下随时间的动态变化,同时,在数据分析的基础上,明确了伊犁绢蒿秋季和春季营养物质贮存和消耗始期,并对不同刈割强度下伊犁绢蒿秋季根中可溶性糖的贮存量与来年春季植物体萌发消耗碳水化合物量之间的关联性做出判断。结果表明,根部可溶性糖含量在10月15日前后完成积累,在来年植株返青时,地下(根部)的营养物质就开始消耗,向地上运输,供植株返青和生长。C2处理不仅在秋季可溶性糖积累最高,而且在来年春季植株返青生长后在体内仍然能保持一个较高的水平,C0处理在秋季或春季植株体内可溶性糖含量在4个处理中总最低,直接影响株体越冬和次年返青。这表明不刈割并不是牧草最好的恢复方式,适度刈割有利于牧草的生长和体内可溶性糖的循环利用,但C0只能使植株处于劣势或死亡。
Artemisia serrata is one of the common grassland constructive species in the Artemisia desert grassland in Xinjiang. In spring, it is responsible for the restoration of the body of the livestock and the raising of the young. In autumn, the livestock should store more energy in the meadow and grow the next generation Breeding. Based on Artemisia desert grassland, taking Seriphidium transillense as the research object and field sampling, the dynamic changes of soluble sugar content in roots, stems and leaves of Artemisia selengensis Turcz. Under different cutting intensities with time were analyzed. At the same time, On the basis of data analysis, the storage and consumption of nutrients in autumn and spring of Seriphidium <(R)> Seriphillum Ileuca were clarified, and the storage amount of soluble sugar in autumn roots of Seriphid plynaria and the amount of carbohydrate consumed The relevance of the judgment. The results showed that the content of soluble sugar in roots was accumulated before and after October 15. When the plants returned to green in the coming year, the nutrients in underground (root) began to be consumed and transported to the ground for greening and growth of plants. C2 treatment not only had the highest accumulation of soluble sugar in autumn, but also maintained a high level in vivo after the plants turned green in the next spring. The total soluble sugar content of plants treated with C0 in the autumn or spring was the lowest in four treatments, which directly affected Strains overwinter and rejuvenate the following year. This indicates that no clipping is not the best way to restore the forage. Moderate mowing is beneficial to the growth of forage grass and the recycling of soluble sugar in the body, but C0 can only make the plant at a disadvantage or die.