生物量

It suggested that Cynodon dactylon had strong toleration to flooding by prolonging stem, changing leaf shape and reducing biomass.

实验表明狗牙根繁殖体通过延长茎长、改变叶形和减少生物量等方式对水淹显示出较强的耐受能力。

The average biomass removal rate of TN and TP of Canna indica and Cyperus alternifolius was 21.69 and 7.97 mg/, 12.31 and 5.95 mg/, respectively.

对污水中TN、TP的去除率，美人蕉达到84%、80%，伞草达到77%、72%；对TN、TP的平均生物量去除速率，美人蕉为21.69、7.97 mg/，伞草为12.31、5.95 mg/。

The comprehensive evalucation resulted in a strong drought resistance group including ZXY04P-201、ZXY03P-227、ZXY03P-122 and ZX Y04P-136, a weak drought resistance group including ZXY04P-101、ZXY04P-89,ZXY04P-239 and a intermediate group including the others according to the the above indicators. 3. The results of study on drought mechanism for 4 Dactylis glomerata L. under continuously water stress and rewatering show: the water saturation deficit of leaves arose hastily, and ZXY04P-239 changed most obviously while ZXY04P-201 changed only slightly under drought stress. ZXY03P-173 and ZXY04P-201 increased in the relative plasmalemma permeability and the soluble sugar content while thant of ZXY04P-75 and ZXY04P-239 showed the trend of initial increasing, reaching the peak at the 8th day, then decreasing under drought stress.

20份鸭茅种质幼苗期抗旱性研究表明，干旱胁迫条件下，所有材料的株高、生物量显著下降，叶片脯氨酸和可溶性糖作为重要的渗透调节物质，其含量迅速增加，质膜相对透性的数值变大，细胞膜受伤害程度增大，水分饱和亏缺值变大，植物保水能力变弱，胞间CO2浓度增大；净光合速率、蒸腾速率、气孔导度和叶绿素含量等指标测定值减小，通过20份鸭茅种质苗期抗旱性综合评价，发现ZXY04P-201、ZXY03P-227、ZXY03P-122、ZXY04P-136属强抗旱性材料，ZXY04P-101、ZXY04P-89、ZXY04P-239属弱抗旱性材料，其他属于中等抗旱性材料。

The fungal biomass and dye decolorization had a positive relationship under the condition of different carbon and nitrogen sources.

对菌丝生物量和染料脱色率的研究表明，在不同碳源和氮源条件下，两者之间具有明显的正相关性。

As a result, the P schrenkiana population has reverse-J shaped DBH class, age structure and tree density patterns but with a bell-shape biomass pattern. The Schrenk spruce population also has a classical linear survivorship curves between Deevey Ⅱ and Deevey Ⅲ type.

研究结果表明中部天山雪岭云杉种群的胸径、年龄结构和种群密度都呈倒－J型分布，种群生物量呈钟型分布，存活曲线基本介于Deevey Ⅱ和 Deevey Ⅲ型之间。

Biomass in the rain forest was far more than that in the plantation of 12 years,especially for the shrub layer.But the biomass of litterfall collected in the plantation was greater than that of the rain forest for the reason that Betula alnoidis defoliated in dry seasons.9 Four years observation found that soil bulk density tended to increase first, then decrease after planting trees;total soil porosity and non-capillary porosity tended to decrease and after few years they recovered to different degrees;the soil cation exchange capacity for all forest types increased;in the soil of 0-30cm depth,soil salt saturation tended to decrease;nutrient content in the soil of 0-60cm depth in the young stand tended to decline;soil effective P,effective K and N contents all tended to decrease.

山地雨林的总生物量远远大于10年生的西南桦人工林，其中灌木层的相对差别尤其巨大。94次的观测发现，人工林栽植后，土壤容重一般呈现一个先上升后下降的特点；而土壤非毛管孔隙度、土壤总孔隙度大多呈下降趋势，几年后有不同程度的恢复。

Inoculating nitrogen fixing bacteria (2＃, 12＃, 14＃, 7＃,and mixing bacteria species) to tissue culture you nglings of Dendrocalamus latiflorus, it is shown that inoculating nitrogen fixing bacteria can promot younglings survival rate and plant nitrogen content.

用2＃、12＃、14 ＃、7＃菌及混合菌液对麻竹组培苗进行接种显示，接种固氮菌可提高苗木成活率和植株含氮量，14＃、7＃菌和混合菌接种可显著提高麻竹组培苗生物量。

The number of mold, bacteria, culturable microorganisms, aerobic nitrogen-fixing bacteria, anaerobic nitrogen-fixing bacteria, aerobic cellulose decomposition microbes, anaerobic cellulose decomposition microbes were the most in 16-year-old organic tea garden, and the biomass carbon and nitrification of edaphon were also the strongest.

霉菌、细菌、可培养微生物总量、好气性自生固氮菌、嫌气性自生固氮菌、好气性纤维分解菌、嫌气性纤维分解菌均以16年生茶园最多，土壤微生物生物量碳和硝化作用也以16年生茶园最强。

We analyzed the relations of plant ecological type groups and community biomass and environment changes in the grassland communities of Leymus chinensis as edificator along Northeast China Transect.

初步分析了中国东北样带以羊草为建群种或共建种的草原群落植物水分生态类型功能群生物量及其与群落初级生产力和环境变化的关系。

KUE (K〓 usage effeciency) is to be used to judge the K〓 usage effeciency of plant, EKER (Economic K〓 Efficiency Ratio) is a important index to screen soybean genotypes with high potassium usage efficiency.

KUE和EKER分别与生物量和籽粒产量有关，而大豆最终的收获器官是籽粒产量，因此，KUE可用来衡量植株营养体的钾利用效率，EKER则是筛选钾高利用效率大豆品种的重要指标。

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。