Using rice-wheat rotation system as studied objective, to study the effect of free air CO2 enrichment on soil microorganism, to probe the response and adaptation ability of soil microorganism to future global change, and to expound the relationship with soil carbon and nitrogen transformation.

研究農(nóng)田自由大氣CO2濃度升高對土壤微生物的影響，探討土壤微生物對未來全球變化的響應(yīng)及適應(yīng)能力日韩性色自拍视频网站在线播放，并闡明與土壤碳和氮轉(zhuǎn)化的關(guān)系超碰97自慰。

Chapter three is the degradation of Abamectin in soils. The results show:(1) The decomposition of Abamectin is fastest in Aquic Cambosols while slowest in Udic Cambosols in five kinds of different soils.(2) Organic matter content in soil is the most important factor which influences the degradation half-life of Abamectin in soil, and their relative coefficient arrives at 0.9323, but pH value, total nitrogen, CEC and field maximum moisture capacity correlate little.(3) Soil organic matter, soil temperature and pesticide concentration can obviously affect Abamectin degradation in soil, in addition, the degradation half-life of Abamectin in sterilized soil is far more than that in non-sterilized soil, which maybe contributes to microorganism in soil. Chapter four is the microbial degradation of Abamectin.

第三章研究了阿維菌素在土壤中的降解，結(jié)果表明：(1)五種不同類型土壤中99re这里只有精品视频在线观看，阿維菌素在潮濕雛形土中降解最快麻豆精品视频在线，而在濕潤雛形土中降解最慢；(2)土壤有機質(zhì)含量與阿維菌素半衰期相關(guān)性較強人人草av在线，相關(guān)系數(shù)為0.9323XXXXWWW视频欧美，而土壤酸堿度、總氮含量狼友视屏在线、陽離子交換量和田間最大持水量等因子與阿維菌素半衰期相關(guān)性較小特黄特色A级无码毛片视频，說明影響阿維菌素在土壤中降解的最主要因子為有機質(zhì)含量；(3)土壤有機質(zhì)国产白白视频在线观看、土壤溫度和農(nóng)藥濃度等因素對阿維菌素在土壤中的降解有較大影響黄片在线视频观看欧洲，此外滅菌條件下其降解半衰期遠(yuǎn)大于未滅菌時的半衰期，這表明阿維菌素在土壤中的降解可能和土壤微生物有關(guān)免费看的黄色网站在线观看。

As shown in the experimental results: as the conductor of petroleum biological degradation, the quantity of microorganism is the important factor of petroleum degradation efficiency, the huge natural capacity of microorganism in soil is its foundation of bioremediation; petroleum density in certain scope do not affect for the degradation efficiency of petroleum, and in the density of 5%, its initial degradation efficiency is higher, however after training 40 days, this kind of advantage change weak gradually, the reason may be the petroleum of high density probably having certain poison role for microorganism; the best ecological condition of petroleum contaminated soil bioremediation is that nutrition material C: N = 60, electron receives body HiOi joining quantity amount to 12 mg/g, water content is 50%, surface activator is anion surface activator of 12 Wan base benzene sulphur sour sodium; the relation of primary and secondary of factor is water content, surface activator, nutrition material and electron receiver.

試驗研究結(jié)果表明：作為石油生物降解的執(zhí)行者国产黄色视频天天，微生物的數(shù)量是影響石油降解效率的重要因素，土壤中微生物的巨大的自然容量是其生物修復(fù)的基礎(chǔ)网友自拍露脸日韩视频在线播放；石油濃度在一定范圍內(nèi)對石油的降解效率并沒有影響色哟哟网站进入方法，并且在5％濃度時，其起始降解效率較高http曰本wwwcom，但是到了培養(yǎng)40天以后在线视频免费91，這種優(yōu)勢漸漸變?nèi)酰赡苓€是高濃度的石油對微生物有一定的毒害作用免费看哟女网站；石油污染土壤生物修復(fù)的最佳生態(tài)條件為：營養(yǎng)物質(zhì)C：N為60大学生国产在线，電子受體H_2O_2的累計加入量為12mg/g，含水量為50％欧美免费版污网站，表面活性劑為陰離子表面活性劑十二烷基苯磺酸鈉人操人人摸人人干；因素的主次關(guān)系為：含水量、表面活性劑、營養(yǎng)物質(zhì)和電子受體免费AV网站网址不卡。

soil culturable microorganism activities：土壤微生物

有益微生物:Effective Microorganism | 土壤微生物:soil culturable microorganism activities | 微生物特性:Characteristic of microorganism