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马蹄礁底栖海藻的研究 总被引：1，自引：0，他引：1
In this paper, the composition, distribution, seasonal variation and biomass of benthic algae of Qingdao Mati Reef were studied during the period from May of 1981 to April of 1982.The results of the investigation are as follows: 1. 83 species of benthic algae of Qingdao Mati Reef were found,and they are indentified as: 13 Chlorophyta, 16 Phaeophyta and 54 Rhodo-phyta.2. According to the flora of 83 species of benthic algae in Qingdao Mati Reef, it seems that they belong to warm temperate.3. The annual biomass and biomass variation of benthic algae in March were hightest of the west part of Qingdao Mati Reef. 相似文献
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选择中国的黄土-古土壤序列的超磁细菌作为研究对象，以透射电镜、扫描电镜、生化实验和有机地球化学方法先后研究了从黄土地区陕西段家坡、甘肃西峰以及陕西洛川富集的趋磁细菌，结果表明，虽然趋磁细菌在黄土和古土壤层的形态有所差异，但它们均由细胞膜、细胞质和沿长轴排列的磁小体与气泡组成，在适宜的条件下它能生长出较多的磁小体。磁小体由氧化铁组成，并可从体内排出，使环境中部分Fe^2 转变为Fe^3 ，促使地层磁化率增高，尤其在古土壤层段，中国黄土剖面中趋磁细菌的产量是地表温度、湿度、pH、铁含量的函数，与湖沼中的趋磁菌相比，它在菌体形态、磁小体的数量与排列方式上有很大差距，因而中国西北黄土地区的趋磁细菌是典型的生态物种。 相似文献
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位于吉林省安图县东南的石门岩体中，含有大量细粒、斑状闪长岩包体，通过对其形态、产状及特征，特别是包体的结构、矿物成分及矿物生长习性等岩相学特征的研究，初步确定石门岩体岩浆至少是由酸性、基性两种不同成分的岩浆在未完全结晶状态下相互混合形成，首次提出该岩体具岩浆混合花岗岩特征，为浆混成因花岗岩。 相似文献
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题目(2014年安徽卷第34题)根据材料和下图,结合所学知识,回答下列问题。很多中药材生长习性独特,有的喜阴,有的喜光,有的喜湿,有的耐寒,有的耐旱,有的耐盐碱……甘肃省地理位置独特,是全国中药材资源大省,素有"天然药库""千年药乡"之称。近年来,依托中药材,甘肃制药、药膳食品、日化用品等工业蓬勃发展。 相似文献
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根据材料和图1,结合所学知识,回答下列问题。很多中药材生长习性独特,有的喜阴,有的喜光,有的喜湿,有的耐寒,有的耐旱,有的耐盐碱……甘肃地理位置独特,是全国中药材资源大省,素有“天然药库”、“千年药乡”之称。近年来,依托中药材,甘肃制药、药膳食品、日化用品等工业蓬勃发展。 相似文献
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阿克苏地区红富士苹果栽培气候资源分析及发展对策 总被引：2，自引：0，他引：2
结合红富士苹果生长习性，分析了阿克苏地区红富士苹果种植的气象条件。加上适宜的栽培技术和管理措施，阿克苏地区发展红富士苹果有独特的优势。 相似文献
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人工栽培黄芩的气象条件研究 总被引：1，自引：0，他引：1
人工栽培黄芩的气象条件研究董关水（乌盟气象处，０１２０００，集宁）黄芩是我国中医药学上的一味名药，具有清热、泻火、解毒作用，对肺热咳嗽、黄胆肝炎、高血压、胎动不安有特殊功效，对支气管过敏性哮喘有一定缓解作用。由于黄岑野生采挖量少，生长周期年限长，果实... 相似文献
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KANG Yanyu LIANG Junrong GAO Yahui LIN Rongcheng GAO Hu XING Xiaoli MA Jie LUO Qiaoqi 《海洋学报(英文版)》2007,26(5):107-115
The growth and interspecies competition of two red tide algal species Thalassiosira pseudonana Hasle et Heimdal and Gymnodinium sp.were studied under different concentration ratios of nitrogen to phosphorus,and the algal batch culture experiments were conducted.The physiological and biochemical indexes were measured periodically,including the maximum comparing growth rate,relative growth rate,average double time and chlorophyll a concentration.The results showed that when the concentration ratio of nitrogen to phosphorus was 16:1,the maximum comparing growth rate,relative growth rate and chlorophyll a concentration of Thalassiosira pseudonana all reached the highest,and average double time was the shortest.This implied that the optimal concentration ratio of nitrogen to phosphorus of Thalassiosira pseudonana is 16:1.When the concentration ratio of nitrogen to phosphorus was 6:1,the maximum comparing growth rate,relative growth rate and the chlorophyll a concentration of Gymnodinium sp.reached the highest,and average double time was the shortest,so the optimal concentration ratio of nitrogen to phosphorus of Gymnodinium sp.is 6:1.From the growth curves as indicated both in the cell density and the chlorophyll a concentration,it is suggested that the influence of concentration ratio of nitrogen to phosphorus on the chlorophyll a concentration and the cell density are almost the same.Different concentration ratios of nitrogen to phosphorus had weak influence on community succession and the competition between the two algae.Gymnodinium sp.may use the phosphorus in vivo for growth,so it is important to pay attention to the concealment of phosphorus,in order to avoid the outbreak of red tide.On the basis of the importance of nitrogen and phosphorus and the ratio of their concentration,the possible outbreak mechanism of red tide of the two algae was also discussed. 相似文献
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主要介绍了青岛沿海地区栽培和野生冬观果树木的种类，开花结果日期，分布状况，生长习性及用途。对栽培种在青岛市沿海新建城镇园林绿化中宜积极应用，野生种宜在沿海苗圃先进行引种驯化再加以推广使用。 相似文献