The experiment assumed two kinds of the rice soil of different fertility level.
试验是采用肥力水平不同的两种水稻土进行。
The fertility level of the reed fields in Yangtze River basin is higher than that in Hanjiang River basin.
长江干流苇田肥力高于支流汉江的苇田肥力。
The destruction of soil, At present, there are 110 countries where the arable land's fertility level is lowering.
土壤遭到破坏目前，有110个国家的可耕地的肥活程度在降低。
In the mean time, we also analysed changing laws of Lou soil? S physical properties in heavy loam soil region under different fertility level.
同时，还着重分析了重壤带的土娄土在不同肥力水平下其物理性质的变化规律。
In a word, we conclude that (1) : the soil fertility level was greatly influenced by the Long-term local addition of fertilizer, especially by the farmyard manure.
总之，我们可以得出以下结论：(1)：长期不同施肥对土壤肥力水平影响很大，尤其是长期施加厩肥。
Soil microaggregates can influence the soil physical, chemical and biological properties and may be used as an overall index for evaluating the fertility level of soil.
土壤微团聚体具有影响土壤理化生物性质多方面的作用，可能作为评价土壤肥力水平的综合指标。
From the point of view of soil comprehensive fertility and considering the dependence of crops on the fertility factors, the results of quantitative study of the soil fertility level are shown.
从综合肥力的观点出发，结合作物对各肥力因素的依赖程度，对土壤肥力水平进行了定量研究。
Thus a new type of fertility culture is urgently needed to carry on the adjustment, and stabilize the low fertility level and adjust population structure through the integration of fertility culture.
这都急需一种新型的生育文化来进行调节，通过生育文化的整合作用，来稳定低生育水平，调整人口结构。
The odd ones out are America and Britain, which both have lots of women at work and fertility rates close to replacement level (with immigration making up the rest).
美国和英国则是例外，它们都有大量工作妇女，且生育率接近替代水平（不足部分有移民补充）。
But the policy has almost certainly reduced fertility below the level to which it would have fallen anyway.
但几乎可以确信的是：该政策已将生育率降低到标准以下，事实上这一标准无论如何都应可达到。
From fertility that is almost as high as one can get to below replacement level in 22 years: social change can hardly happen faster.
花了22年将生育率降到等值更换水平，我们不得不说没有比这个更快的社会变革了。
Here, countries have escaped the fertility trap and the childbearing rate is around 1.8-not high, but higher than it was, and, in some cases, reaching the magic replacement level.
这里的国家逃离了生育陷阱，生育率大约1.8——不高，但已今非昔比，而且有时候达到了神奇的更替水平。
Africa has some of the most exhausted soils in the world, with less than 1% of organic matter in them, half the level required for good fertility.
世界上消耗最大的土壤一些在非洲，土壤中的有机物含量不到1%，这不到良好生产含量的一半。
The CASS study calls for a "prompt" change of policy to get the fertility rate up to around the "replacement level" of 2.1.
社科院研究号召一个“刺激”性政策改变来使生育率提升到2.1。
Fertility starts to drop at an annual income per person of $1, 000-2, 000 and falls until it hits the replacement level at an income per head of $4, 000-10, 000 a year (see chart 2).
人均年收入到1000至2000美元时，生育率开始降低，收入到4000至10000时，生育率降到生育等值更换水平（见图表2）。
The reason is that widening replacement-level fertility means population growth is slowing down anyway.
理由是生育等值交换水平的扩展表明人口增长不论怎样还是在减速。
Europe's total fertility rate has been below the level needed to replace the population for about 34 years, according to a 2005 Rand Corp.study.
根据兰德公司2005年的一份研究，34年来欧洲总生育率已低于替代人口所必需的水平。
The total fertility rate had been 5.8 in 1950, he notes, and had declined sharply to 2.3 by 1980, just above replacement level.
他解释说，1950年总生育率为5.8，而1980年巨幅下降至2.3，略微高于人口更替水平的底线。
The fertility rate is the number of children a woman can expect during her lifetime; 2.1 is the replacement level, the point at which the population stabilises.
人口出生率是指女性一生预期生养的儿童数目；2.1是更替水平，人口在这一点上保持稳定。
So for three decades, fertility rates have mostly been below the “replacement” level—of just over 2.0 in rich countries.
因此在30年内，有大部分时期，生育率都低于“置换”水平——在发达国家刚超过2.0。
If you look at the overall size of the world's population, then, the picture is one of falling fertility, decelerating growth and a gradual return to the flat population level of the 18th century.
如果你观察全世界的总人口，整个大局显示的是生育率下降，人口增长减慢，逐渐回归到18世纪的人口稳定状态。
Results showed that the Integrated Fertility Index (IFI) of orchard soil in red earth regions of Guangxi were between 0.17 to 0.25 and belong to mid-low level.
结果表明，广西红壤果园土壤肥力综合指标值(ifi)在0 17 ~ 0 25之间，果园土壤肥力属中下水平。
It is a possible that the study of total soil enzyme activity appraise the level of soil fertility.
用酶活性的总体进行土壤肥力水平评价的可能性。
The level of fertility was negatively correlated with infection frequency, and there was no effect of it on the incubation period.
肥力水平与侵染机率呈显著负相关，对潜育期无明显影响；
The researches on the etiology aim at guiding clinical prevention and treatment, improving fertility and alleviating the complications that the low estrogen level causes.
对其病因学的研究，旨在指导临床预防和治疗，提高生育力，缓解低雌激素水平所致的并发症。
According to the classification criterion of soil nutrient, the soil fertility in this area is at a middle level.
按照土壤养分含量分级标准其土壤肥力属中等水平。
Replacement rate — The level of total fertility that is compatible with a stationary population.
替换率——用来协调静止人口的总出生率级别。
Organic matter is a very important part of soil. The level of content is one of the key indicators to measure soil fertility.
有机质是土壤的重要组成成分，其含量水平是衡量土壤肥力的重要指标之一。
The women's educational level can be involved into certain factors like birth idea, family structure, first marriage age, employment status to influence the fertility rate.
分析表明，妇女文化程度与其平均活产子女数呈负相关关系，并且妇女文化程度通过生育观念、家庭结构、初婚年龄、就业状况等因素对生育率产生影响。
The women's educational level can be involved into certain factors like birth idea, family structure, first marriage age, employment status to influence the fertility rate.
分析表明，妇女文化程度与其平均活产子女数呈负相关关系，并且妇女文化程度通过生育观念、家庭结构、初婚年龄、就业状况等因素对生育率产生影响。
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