生物量

The molluscs were the first in biomass and density of the benthos.

全年各类群生物中，平均生物量及栖息密度都以软体动物居首位。

Coastal waters; Benthos; composition of species; biomass, density; community structure; diversity index

近岸海域；底栖生物；种类组成；生物量；栖息密度；群落结构；多样性指数

The biomass between silver carp and bighead carp is in a ratio of 7:3 during the experiment.

试验期间鲢鱼和鳙鱼的放养生物量为7：3。

However, the dimensions of the heterogeneities of plankton biomass and bioluminescence intensity can differ, as was noted above.

然而，浮游生物量非均质性和发光强度的尺寸可以不同，正如上文所述。

Based on the assessment of mycelial biomass, xylanase activity and content of xylose-equivalent reducing sugars in their liquid cultures, the isolate CY4786 was best for xylanase production in a basal medium containing birchwood xylan (10.0 g/L)as a sole carbon source, yeast extract (2.5 g/L) and sea salts (15.0 g/L) with initial pH 7.8. When assayed at the optimized regime of 50℃ and pH 4.6, the activity of xylanase produced by CY4786 in 7d liquid culture at 25℃ reached 1.07 × 104 unit/mL.

根据培养液中菌丝生物量、木聚糖酶活力和木糖等价还原糖含量等指标的测定，菌株CY4786在起始pH 7.8的木聚糖-酵母膏-海盐液体培养基中25℃下震荡(100r/min)培养7d产酶最佳；粗酶液在50q℃和pH 4.6的优化条件下进行测定，木聚糖酶活力达到1.07×104U/mL。

Boletus edulis, Gomphidius viscidus, Laccaria bicolor and Leccinum scabrum, growing in the media with different mass concentrations of DDT were studied in vitro.

结果表明：DDT没有影响外生菌根真菌的生长模式，只是改变了其生长速度和生物量积累。

The choice of carrier is important for the immobilization of Thiobacillus ferrooxidans . Activated carbon, gangue, ceramic granule and zeolite were used as carriers, and their effect on the oxidative activity of the bacteria and the biomass adhering to carriers were analyzed.

载体的选择对氧化亚铁硫杆菌的固定化至关重要，选择活性炭、煤矸石、陶粒和沸石4种载体，考察这4种载体在不同添加量下对氧化亚铁硫杆菌氧化活性的影响，并分析载体表面附着的生物量。

The result showed that the biomass, plant height, dry weigh, carnification, K(superscript +) content and K(superscript +)/Na(superscript +) ratios of I. lactea var. chinensis decreased with increasing NaCl stress, while root/shoot ratios and Na(superscript +) content increased. The water content and carnification degree of roots in all treatments were higher than shoots, which, however, was not significantly related to salt concentration.

试验结果表明：在NaCl胁迫下，随著胁迫浓度的增加，马蔺生物量、株高、干重、肉质化以及K含量、K/Na比值降低，同时根冠比、Na含量增加：各盐处理区根系含水量和肉质化程度大於茎叶，但与盐浓度的相关性不大。

Fuwankia organic potash fertilizer can improve vegetable growth and increase the yield of cucumber, small cabbage, and celery in sunlight greenhouse.

西芹的株高、茎粗、地上植株、地下根重以及总生物量增加。富万钾有机钾肥能明显促进蔬菜生长，提高产量。

With sand culture in greenhouse, this paper studied the effects of different concentration sea water on the biomass, ion absorption and distribution, chlorophyll content, and photosynthesis of chicory seedlings.

采用沙培的方式，研究了不同浓度海水对菊苣幼苗生物量、离子吸收分布、叶绿素含量以及光合作用变化的影响。

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。