查询词典 fertility rate

It can decrease the decomposition rate of organic substance and improve humification coefficient, so it can raise the quantity and quality of organic matter and improve the sandy soil fertility.

膨润土能够降低有机物料的分解速率、提高腐殖化系数，从而增加有机质的含量和质量，提高土壤酶活性，改善土壤肥力状况。

I am well aware of the dire consequences of fertility falling below the replacement rate in the long run.

其实，我当然了解人口替代不足在一段时日之后将为我国带来多大的麻烦

Regressive method of orthogonal conic substitution with 5 factors had applied to study the effect of different planting density and different application rate of N, P2O5, K2O and organic manure on the grain yield and economic benefit of spring corn, and the simulation model of yield formation of spring corn in the medium fertility field was set up.

2005年在长沙采用5因素2次正交旋转回归设计方法，研究了不同密度和氮肥、磷肥、钾肥、有机肥不同施用量对春玉米产量与经济效益的影响。

Under nature pollination condition,the fruiting rate is about 2%by self-fertilization, and heterosis of character of tea plant filial generation is unavoidable due to the limitation of its self-fertility.

茶树虽然是异花授粉植物，但自花结实率一般为2%左右，要想利用杂种第一代，需要采取隔离等措施。

F1 hybrid has the morphological feature which is between the male and female parents and shoed strong heterosis, exuberant vitality, late ripe period and low rate of self-fertility. The average chromosome configuration of F1 in PMC MI was 18.58Ⅰ+18.59Ⅱ+0.085Ⅲ+0.028Ⅳ. At anphase Ⅰ in PMC, some laggard chromosomes arranged in equatorial plate. Micronucleus and a lot of abnormal cells can be observed at dyad, tetrad and microspore.

杂种F1形态特征介于双亲之间，具有较强的杂种优势，生长旺盛，熟期晚，自交结实率较低。F1花粉母细胞减数分裂中期Ⅰ平均染色体构型为18.58Ⅰ+18.59Ⅱ+0.085Ⅲ+0.028Ⅳ，PMC后期Ⅰ观察到部分落后染色体排列在赤道板上；二分体、四分体和小孢子时期，细胞内普遍观察到微核，且出现大量异形细胞。

The chemistry behavior research of wollastonite indicated that the silicon-potassium fertilizer has a chemical active in organic acid.The factors affecting manurial effect of silicon-potassium fertilizer are not only soil pH and desilicification,but also content and type of organ in the soil.Wollastonite chemistry behavior indicates that silicic acid can be dissolved out from silicon-potassium fertilizer in chlorhydric acid solution if pH of solution is not smaller than 2. The drop of apparent density,increase of DBP sorptive rate and specific surface for leavings indicate that hydrated silicon oxide is polyporous,and those mineralogic feature presignify that silicon-potassium fertilizer has a role of conservation of both Moisture and Fertility and improving soil structure.After active ingredient releasing,silicon-potassium fertilizer leaves half the substance (non-active ingredient)in soil.

熟料单矿物在酸溶液中的化学行为研究表明，硅钾肥矿物在有机弱酸中的化学活性较好，影响硅钾肥肥效发挥的因素是土壤pH值和土壤的去硅化程度，还有土壤有机质的含量与种类；硅灰石在盐酸溶液中化学行为表明，在反应体系pH不小于2的情况下，硅钾肥矿物大量溶出硅酸根组分；溶解残余物表观密度降低、DBP吸着率和比表面积增加表明水合二氧化硅是以多孔形式存在，为硅钾肥具有保水保肥、改良土壤结构的提供了矿物学依据。

Onservative therapy for CIN has not significant influnce on fertility, while cold knife conization and LEEP conization may increase the premature delivery rate, which may be associated with premature ruption of fetal membrane.

IN保守治疗对于患者受孕能力无显著的影响；宫颈冷刀锥切及LEEP锥切可能增加早产率，早产率的增加可能和胎膜早破的发生有关。

On one hand fertilizer rate must be in accordance with soil fertility and crop's nutrient property; on the other application should abide by the principle of combining the organic manure with inorganic nutrients and primary with secondary and micro-nutrients.

一方面施肥量必须与土壤肥力和作物养分特征一致；另一方面应当有机肥与无机养分配合施用，大量元素、中量元素和微量元素配合施用。

Globalisation, it seems, leads to a shift in the direction of "replacement fertility": the rate at which the size of a population eventually stabilises.

看起来，是全球化导致了&更替生育率&——使人口最终稳定下来的生育率——方向的转变。

Globalisation, it seems, leads to a shift in the direction of "replacement fertility": the rate at which the size of a population eventually stabilises.

看来全球化带动了这些国家往&更替生育率&的方向走。

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。