新疆平原荒漠盐渍草地土壤微生物生态分布的研究

来源 :中国草地 | 被引量 : 0次 | 上传用户:dulcimerqin
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
对新疆平原荒漠盐渍草地土壤微生物生态分布的研究结果表明,新疆平原荒漠盐渍草地中分布的微生物数以细菌占绝对优势,占总菌数的99.8%。0~40cm土层是该类草地土壤微生物数量分布及生物学活性最大的区域。土壤微生物呈明显的季节变化规律。氮素生理群微生物以氨化细菌最多,芽孢细菌次之,硝化细菌极少,好气固氮菌未测定到。平原荒漠盐渍草地中各类微生物的数量及分布密度均低于同地区的耕地土壤。 The results of the study on the ecological distribution of soil microbes in desert salinized grasslands of Xinjiang Plain show that the number of bacteria in desert salinized grasslands of Xinjiang Plain is dominated by bacteria, accounting for 99.8% of the total number of bacteria. The 0-40 cm soil layer is the area with the largest number and distribution of soil microorganisms in this kind of grassland. Soil microorganisms showed obvious seasonal variation. Nitrogen physiological group of microorganisms to ammoniated bacteria most, followed by spore bacteria, nitrifying bacteria very few, good gas nitrogen-fixing bacteria were not measured. The number and distribution density of all kinds of microbes in plain desert salinized grassland were lower than that of arable land in the same area.
其他文献
期刊
A series of novel L-amino acid esters prodrugs of acyclic nucleoside phosphonates was synthesized and their anti-HBVactivity was evaluated in HepG2 2.2.15 cells
如今,村镇的路灯安上了,每天晚上送电,早晨停电,也是一个不大不小的麻烦.我们使用上海产的音片定时开关钟及交流接触器,研制成功了路灯自动控制装置.线路如下图. Nowadays,
IBM公司新近推出的IBM ThinkPad 760 XD,是众多笔记本产品中当之无愧的精品。这是ZD(中国)实验室在测试了该款笔记本电脑以后得出的结论。 IBM ThinkPad 760 XD的售价约为58
怎样才能进一步提高具有加速功能的一流2-D、3-D显示卡的性能?用8MB内存取代4MB内存后,显示卡的性能会有什么样的变化?Matrox的Millennium Ⅱ与Number Nine的Imagine128 Ser
有消息说13.8英寸屏幕的便携机即将问世,您能抵御大屏幕的诱惑吗?你的眼睛能够适应大屏幕吗? There is news that 13.8-inch screen portable machine is coming out, you c
原来,许多厂商都把传真机,复印机和打印机集成为一种设备,这种设备通常部只提供有限的功能及命令,而价格却相当昂贵。今年,一些公司如Xerox(施乐)公司、Toshiba(东芝)美国信
6月24日获悉:时值联想1+1家用电脑销售10万台之际,联想集团从6月28日起再次在全国范围内推出为期两个月的“联想署期送慧笔特惠奉献全家受益”暑期热卖活动,使联想1+1电脑迈
Crystal of Yb3+-doped Ba3Gd(BO3)3 has been grown by the Czochralski method. The spectroscopic characterizations have been investigated at room temperature. The
提高职业技术学校的教学质量是职业教育诸多问题中的核心问题。提高职业教育教学质量要在师资建设,学习兴趣,教学手段,教学设施等方面深入研究,推动教学创新。 Improving th