水土

The herbage should be utilized more ,which is important to develop our livestock farming ,improve deteriorated rangelands and preserve water and soil.

在简述目前我国黄花苜蓿国研究现状的同时，提出要大力开发利用这一牧草资源，它必将对我国畜牧业生产、退化草地改良及水土保持等发挥重要作用。

We will strictly implement the spirits of the 17th Congress of the CPC. In line with the viewpoint of scientific development and the new ideas of harmony between water and man, we will grip the opportunity, deepen reform and speed up development as to resolve the four main puzzlers we are facing which are the disaster caused by flood and drougnt, water scarcity, soil erosion and water pollution.

江西水利人将认真贯彻党的十七大精神，以科学发展观和人水和谐治水新思路为指导，抓住机遇，深化改革，加快发展，着力解决面临的洪涝灾害、干旱缺水、水土流失、水污染四大水问题，促进全省经济社会又好又快发展，为在新起点上实现江西崛起的新跨越提供有力的水利保障。

Containing many nutrients, it is of great value to be developed in poultry raising, health care, keeping soil and even greening barren hills.

由于它具有多种营养成分，因此在畜禽饲养、医疗保健、水土保持和绿化荒山等方面有较大开发利用价值。

Through strengthening natural forest conservation and nature re-serve management, continuing key eco-protection projects, establishing important ecosystems, and stepping up natural ecological restoration, by 2010 some 90 percent of typical forest ecosystems and key national wildlife species will be under effective protection; nature reserves will account for 16 percent of the national territory; 250,000 sq km of land suffering from water and soil erosion will have been improved; 300,000 sq km of land will have been ecologically restored; and 22 million ha of desertified land will have been put under control.

通过加强天然林资源保护和自然保护区的监管，继续开展生态保护重点工程建设，建立重要生态功能区，促进自然生态恢复等措施，到2010年，力争实现90%左右的典型森林生态系统和国家重点野生动植物得到有效保护，自然保护区面积占国土总面积的比重达到16%左右，综合治理水土流失面积25万平方公里，实施生态修复面积30万平方公里，治理荒漠化土地面积2200万公顷。

In this paper, an attempt is made to predict the applied prospects of reed at water-lever-fluctuating Zone in the Three Gorges Reservoir Region by analyzing the present situation, in other words, reed may prevent water erosion, eutrophication in water, heavy metal pollution, solid castoff pollution, garbage infiltration and water pollution, the overrunning of algae and so on.

本文通过分析三峡库区消落带的生态环境问题，预测了芦苇在库区的应用前景，即可防止水土流失、水体富营养化、重金属污染、固体废弃物污染、垃圾渗漏液污染和藻类爆发等问题。

Soil and water conservation ; farmer households' behavior ; farmer households' off-farm work ; resources use ; Logistic model

水土保持；农户行为；农户兼业；资源利用； Logistic模型

Drainage ditch built with biological bricks is a new type of biological measure for soil and water conservation works.

生物砖排水沟是一项新型水土保持工程型生物措施。

Through development of multiple cropping to exploit the sunlight resources, thermal resources, water resources and soil resources of farmland in summer fallow period is very helpful for improvement of soil fertility and to prevent fie...

发展多熟种植，开发利用夏闲期农田光热水土资源，有助于改善农田土壤肥力、缓解农田生态系统退化、增加农区畜牧业饲料来源，实现农牧结合，增加农牧民经济收入。

Ecological restoration and soil and water conservation of spoil ground slope are the key projects of environmental protection in expressway construction.

高速公路弃土场边坡的生态恢复与水土保持是公路建设环境保护的重要内容。

Results showed that soil and water loss was serious, and soil erosion modulus was about 32 360 t/(km^2a) on spoil ground. Moreover, distinct gully erosion was observed on the slope.

结果表明，弃土场水土流失剧烈，侵蚀模数平均为3.24×10^4t/，边坡沟蚀现象明显。

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。