本文对影响VA菌根真菌孢子种群组成和季相变化的因素进行了讨论。
The factors that affect spore population composition and seasonal variation of va mycorrhizal fungi were discussed in this article.
聚类结果显示野生大豆天然种群组成结构与地理分布存在一定的相关性。
The cluster analysis indicated there was certain association between the genetic structure of wild soybean accessions and geographic distribution.
白洋淀纤毛虫主要由耐有机污染的种群组成，说明白洋淀主要受有机污染。
Ciliates in Baiyangdian lake were composed mainly by tolerant organic pollution community, it shows that Baiyangdian lake is polluted mainly by organic materials.
目的调查珠海口岸地区鼠体表寄生虫蚤、革螨、恙螨、蜱、吸虱的种群组成。
Objective To investigate species composition of gamasid mites, chigger mites and flea on the rodent in Zhuhai Port.
结论 为中老边境吸血蠓种类分布、种群组成和蠓媒疾病的研究提供了参考依据。
Conclusion The investigation provides the reference for species distribution, community composition and studies of infectious disease by hematophagous Culicoides.
结果表明，沟谷热带雨林各层次中的乔木种群组成是不稳定的，常常随时间而改变。
The result shows that the composition of tree populations is unstable and changes with time.
生产田采集的软腐病菌进行分离、纯化，并根据形态学特征分析了大白菜软腐病菌的种群组成。
Rupr. in Heilongjiang Province were isolated and purified to analyze the population structure of soft rot bacteria by morphologic characteristics.
试验结果表明：水体增温对水库浮游植物的种群组成、优势种的优势度、藻类密度和生物量均有影响。
The results of investigation and indoor simulated test showed there were effects of increased water bodies temperature on the structure, dominant, density and biomass of phytoplankton community.
结论基本摸清秀屿港口岸蝇类种群组成及季节消长，对实施蝇类生物控制和开展传染病监测等工作提供了科学依据。
Conclusion The clarified fly species composition and seasonal fluctuation at Xiuyu Port provide scientific references for fly controlling and infectious diseases monitoring.
结论基本摸清秀屿港口岸蝇类种群组成及季节消长，对实施蝇类生物控制和开展传染病监测等工作提供了科学依据。
Conclusion The clarified fly species composition and seasonal fluctuation at Xiuyu Port provide scientific references for fly controlling and infectious diseases monitoring.
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