查询词典 biomass

The results showed that the soil catalase and dehydrogenase activities, soil microbial biomass N and microbial biomass C were restrain somewhat by four acetanilide herbicides at the beginning of cultivation, but can recover soon.

研究表明，培养初期丁草胺、乙草胺、丙草胺和异丙甲草胺对土壤过氧化氢酶和脱氢酶活性、对土壤微生物量氮和微生物量碳有不同程度的抑制，但均能很快恢复，四种供试酰胺类除草剂对土壤生态的影响不大，除草剂之间也没有表现出显著差异；培养初期rac-异丙甲草胺和S-isomer高浓度处理均比常规用药量处理对土壤酶、土壤BN和Bc的影响大。

To improve the precision of tree biomass parameter calculation, this paper explicates the principle, method and process to estimate the parameters of tree biomass by the nonlinear least square according to the formula of allometry method. It gives the formula to calculate the variance and covariance estimated parameters, and reveals the essence of logarithmic linearization regression of power function.

为了提高林木生物量参数的计算精度，根据林木相对生长公式，阐述用非线性最小二乘法求解生物量参数估值的原理、方法和过程；给出计算参数估值之方差与协方差的公式；揭示幂函数对数线性化回归的本质。

It was concluded that the electrostatic attraction between negative dye molecule and positive biomass due to amidogen protonation was the important mechanism of dye biosorption by biomass.

氨基质子化引起的菌体正电性和染料负电性之间的静电引力是染料吸附的重要机制。

The number of bacteria, fungi, ammonifier and nitrobacteria were positively correlated with the biomass of growing roots and absorbing roots, while the number of nitrogen-fixing bacteria was negatively correlated with absorbing root biomass.

细菌、真菌、氨化细菌和硝化细菌数量与生长根和吸收根生物量之间显著正相关；固氮菌则仅与吸收根生物量显著负相关；而纤维素分解菌与根系生物量的相关关系不显著。

Biomass is a widely-existed renewable resource. The natural biomass used to produce ethanol by fermenation is mainly divided into three types: sugar, amylum and cellulosic materials.

生物质是一种广泛存在的可再生资源，经发酵生产乙醇所用的天然生物质资源原料主要分为3类：糖、淀粉和纤维素物质。

Based on the food chain relationship between nutrition, autotrophy and detritus biomass, considering the complementarity of the nutrition which is caused by the animalcule decomposition of the propagation reliquiae, as well as its losing caused by physical therapies, we set up a model of zoology dynamics about the reciprocity of nutrition-autotrophy-detritus biomass, and analyze the dynamical stability of the model solution by using modern nonlinear theory.

基于营养盐、赤潮藻类、碎屑的生物量之间的食物链关系，考虑到由于海洋内微生物分解动植物遗体对营养盐的补充以及物理因素导致的流失，建立了营养盐－赤潮藻类－碎屑的生物量相互作用的耦合生态动力学模型。运用现代非线性动力学理论，对模型解的动力学稳定性进行了分析。

The poly-culture biomass of silver carp and bighead carp played an important role during biomanipulation in case of no extraneous nutrient addition, which depended on the actual productivity of water body. So it is favorable to improve biomanipualtion of fish to choice the stocking biomass according to productivity of water body.

鱼类的生物量对其生物操纵作用的发挥有重要的影响，水体中鲢、鳙适宜生物量的选择是由水体中生产力水平决定的，根据水体的实际生产力水平来选择鲢、鳙的生物量，有利于其生物操纵作用的发挥。

The effects of biomass accumulated in different stages were different for seed yield. The biomass accumulated before flowering and seed yield were conic section while terminating flowering and maturity stage linear correlation respectively.

增加开花后群体的光合生产量油菜不同生育时期形成的生物产量对子粒形成的作用不同，初花之前形成的生物产量与子粒产量呈二次曲线关系，而终花期和成熟期的生物产量与子粒产量呈直线关系。

In two basins, Bohai and Qinglian, Rotifera contributed most to biomass in almost each size class, followed by copepod. Both the size range of the zooplankton and the body size at which peak biomass occurred were lower than in temperature lakes.

根据对两个子湖一一波海湖和青莲湖2002年和2003年生物量分布的分析与比较，2003年生物量均有所下降，在生物量分布的每个体重等级上轮虫基本上都是第一优势类群，其次是桡足类。

The coppiced shrub remained two coppice shoots adding the parameters obviously of the number, the total length,1 the biomass of new branch and the number and biomass of leaf. 3. the leaf area decreasing with the increasing of adjusting degree.

在相同的生境下，三种调控措施中对基径、顶梢生长影响最明显的是2克隆株/丛与3克隆株/丛；2克隆株/丛的调控措施明显增加当年新生枝的数量、总长度、生物量以及叶片的数量和生物量；而叶面积随调控措施程度的增加有逐渐减小的趋势。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。