查询词典 biomass

Sorghum-Sudan grass which is an annual forage grass in Gramineae have been bred for biomass promotion.

高丹草是一年生禾本科新型饲用牧草，提高其饲草产量是高丹草育种的重要目标。

Now study on kinetics and mechanism of biomass decomposition in HTLW has been done, and a lot of researches should be done to prepare LA efficiently and greenly.

但是目前研究仅停留在生物质资源在高温液态水中分解动力学和机理的研究，对于乙酞丙酸绿色高效制备方法，还需要持续深入的研究。

With adjacent semi-moving dune as the control, this paper studied the effects of 5-, 10- and 22-year old Hedysarum fruticosum plantations on the nutrient status, microbial biomass, and enzyme activities at the soil depths 0-10, 10-20 and 20-30 cm.

以半流动沙丘为对照，对5、10和22年生山竹岩黄蓍人工固沙群落不同层次（0～10、10～20 和 20～30 cm）土壤的养分状况、微生物生物量和土壤酶活性进行了对比研究。

In order to get high yield, the individual biomass and related factors (height, tillers and leaves number) were located on the chromosomes and analyzed genetic effect with QTLs. The heterotic vigor was discussed.

为提高育种中对牧草产量性状优良基因型选择的效率，对高丹草的单株产量及其构成因素进行QTL定位，确定其在染色体的位置及其遗传效应，探讨其杂种优势产生原因。

Root-derived organic carbon is composed of three compartments: root detritus, root eaudates and root symbionts, which represents a large important and potential C sink in forest ecosystems, The known responses of root derived organic carbon and heterotrophic microbes to elevated CO2 were reviewed. Overall, increases in root biomass, productivity, and exudation indicate an augmentation of C inputs into the soil via roots, although changes in root lifespan are still unclear and may modify this flux positively or negatively, Altogether, changes in root chemistry and morphology that may augment soil C storage under elevated CO2 include decreased N concentration and wider root diameter, Alternately, a shift in rooting depth upwards in the soil profile may increase average turnover rates of root detritus. Effects of CO2 concentration on C qualities of root exudates and root symbionts are the least understood components discussed here, Changes of soil heterotropic microbial activity and community under elevated CO2 still remained large uncertainties.

林木根源有机C包括根东通过根枯落物、根系分泌物和根共生菌周转3条途径向土壤输入的有机C，它是森林生态系统中一个重要的、潜在的C汇，综述了根源有机C与其微生物对CO2浓度升高的响应，虽然对根系寿命的变化尚不清楚，但CO2浓度升高将导致根系生物量、生产量、死亡量和分泌物的增加；同时，CO2升高亦促使根共生菌生物量的增加而增加了共生菌的C归还潜力，表明CO2升高使根源有机C的输入增加了，CO2农度升高情况下，根系化学性质和形态特征的这些变化均有利于增加土壤C的吸存；而根分布深度的降低则对土壤C吸存不利；CO2浓度升高对根分泌物和根共生菌质量的影响研究则极少，CO2浓度升高下土壤微生物活性和群落组成的变化存在较大的不确定性，目前CO2浓度升高下林木根源有机C对森林长期C吸存的贡献仍很不清楚。

In chapter 6, the foraging behaviour, biomass allocation and reproductive characteristics of Humulus scandens which grow under different nutrient supply were studied.

第六章以攀援植物葎草为材料，探讨了在不同养分供应水平下植株的觅食行为、生物量分配以及繁殖特性。

The effects on yield and canopy biomass accumulation and distribution after anthesis of later sowing wheat were studied in different fertility levels. The results showed that each above ground organs hydrocarbonate accumulation increased with fertility level rising.

对不同肥力水平下晚播小麦开花后地上器官光合产物积累、运转和对产量影响的研究表明，开花后同一天，各地上器官光合产物的积累量均随肥力水平的提高而增加。

And then analyze the characteristic of a hypaethral quarry and some ecological and environmental impact brought by opencast working. Such as some familiar pollute source, harms brought by opencast working: botanic reakage, water pollution, edaphic reakage, water and soil loss, biomass reduce.

然后对露天采石场的特点以及开采造成的生态环境影响进行分析，如一些常见的污染源，开采造成的危害：植被破坏、水体污染、土壤破坏、水土流失、生物量减少等。

The results showed that biomass of Eucalyptus exserta stands were increscent with the increasing of stand age.It was 2.77 t/hm2 in the stand of 0.7 year and was 70.932 t/hm2 in the stand of 7.7 years.

结果表明，窿缘桉林分的生物量是随着林分年龄的增长而增加，即由造林初期(0.7 a生)的2.77 t/hm2增加到主伐期(7.7 a生)的70.932 t/hm2。

The increscent of species biomass percentage, which is used to present the competitive ability of species growth, was not significantly correlated between un-drought plots and drought plots. This means that drought stress has significant effect on the competitive hierarchies of species growth characteristic.

以消亡百分率代表物种存活特征竞争能力，干旱胁迫和正常对照样地内物种消亡百分率之间存在显著正相关，存活特征的竞争等级未发生明显的变化，说明干旱胁迫对物种存活特征的竞争等级的影响作用较弱。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。