地下灌溉

The results show that buried depth of phreatic water levels has a very important influence on the agricultural environment and transformation between soil water and groundwater.

试验方法与试验条件概述在昌吉均衡试验场选用天山北麓平原有代表性的冬小麦和玉米两种主要作物，人为控制地下水位，模拟不同潜水埋深条件下的种植试验，土壤条件和灌溉制度与当地基本保持一致。

Based on the continuously irrigating model test of brackish water(4.7g·L-1)on the shallow thick-bedded clay parting heavy loamy soil with treatments of different amendments,such as zeolite,phospho-gypsm and so on,the effects of long term brackish water irrigation on the physical and chemical characters of soil and the effects of amendments on the soil of long term brackish water irrigation were all discussed.

在天津市静海县重壤质浅位厚层夹粘土上，布置了连续多年灌溉浅层地下微咸水(矿化度4.7 g·L-1)的模拟试验，对土壤渗透特性、土壤团粒结构等物理性状以及全盐、分盐等化学性状的影响进行了研究。

It is suggested that policy should be on the basis of minimum irrigation, soil mulching and straw and manure utilization, and the leading one of its measures should be to use high-salined groundwater as an accompaniment of river water, by the integration of the power-pumped-Yellow-River irrigation system and well-water irrigation system, to lower the watertable and reduce the irrigation cost. Thus the dynamic balance of salts, as well as the prevention and reclamation of salinization, will have been kept through the management of water and soil organic matter.

在此基础上结合国内外盐渍化防治及盐渍土改良利用方面的发展趋势，笔者提出应该以水盐平衡理论为指导，以节水灌溉为前提，以地面覆盖和土壤培肥为基础，以井排系统与引黄灌水系统并网，井渠混灌，降低地下水位为突破口，通过对水分和肥力的调控和管理达到对盐分的调控和管理，使盐分在土体或灌区实现动态平衡，从而达到土壤盐渍化的预防和治理。

The basic concept of FOP can be summarized as to further optimize effective prescription according to the standard of curative effects and with the aid of modern science and technology and theories of traditional Chinese medicine.

其基本内涵可概括为：以确有疗效的中药复方为研究对象，以现代科学技术和传统中医药理论为技术支持，以该复方所治病证的药效响应为评价标准，以优化重组疗效更优的新复方为研究目的。

Ever since our world has been a world, native forests have been indiscriminately exploited by man.

自从我们的世界一直是世界原生森林被任意剥削人。