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- effective soil layer 有效土层
- Title： Research on soil nutrient released from rice straw buried in deep soil layer by rotocultivator and the effect of yield promotion in paddy fields. 期刊：浙江大学学报（农业与生命科学版）--2000/03关键词：稻田；机械秸秆深施；养分释放；
- The particle size scope is in 0 ~ 50mm that It can test in the soil layer. 可以测试的土体的颗粒粒径范围为0~50mm。
- The effective controlling measuresmust be adopted in bored pile construction at quicksand and soft soil layer, which can reducef engineering accidents and assure engi-neering quality. 针对流砂或软土层地质情况,采取相应的预防和控制措施,保证成孔质量,减少工程事故的发生,从而确保施工的顺利进行。
- The ash powder coal in discharging field of thermal power plant shill effect soil and shallow ground water. 火力发电厂排灰场的粉煤灰对排灰场周围的土壤和浅层地下水的影响主要取决于当地土壤的类型及污染物的种类和性质。
- Drained consolidation method is an economical effective soil treatment for the construction of airport pavement on the soft foundation. 在软土地基上建设道面工程,采用排水固结法处理软土地基,是经济有效的地基加固方法之一。
- Soil adhesion may be reduced even if water cannot readily permeate the soil layer. 即使水不易进入污垢内层，也能降低污垢的吸附作用。
- Considering these phenomena, it is obvious that fertilizer is an essential component for an effective soil and water conservation programme on sloping lands. 考虑到这些，很显然，在坡地土壤有效的土壤和水分保持计划中，肥料是一项重要的组成部分。
- On the nitrate-N accumulated characteristics in deep soil layer of winter wheat field in Taihang Piedmont. 太行山山前平原冬小麦田深层土体硝态氮累积特征研究
- It is thought water supplied is the best in glen by appraising of effective soil water ofpinus sylvestris var.mongolica artifical dune-fixing forest in different site. 评价不同立地条件樟子松固沙林土壤水分有效性认为丘间低地供应状况最好。
- The deposition in an underlying soil layer of colloids, soluble salts, and mineral particles leached out of an overlying soil layer. 淀积作用胶状物，可溶性盐和矿物微粒从上层土壤向下层过滤的沉淀过程
- Species number ranked in the following order: brush and herb layer > tree layer > litter layer > soil layer. 每样地的物种数量都是以灌木草本层最多，依次为乔木层、枯枝落叶层和土壤层。
- The soil layer of Rouli is 700 to 800 meters deep. Experts have verified it is the thickest soil layer on earth. 若笠的黄土层厚达七、八百米，经过专家证实，是整个地球黄土层最厚的地方。
- Remanent magnetism of soil layer is taken as a reference frame for locating hy-drocarbon seepage zone. 本文利用土壤剩余磁性作为确定烃类渗漏带的参考系。
- The soil layer of this village is rich in nutrients, and thus suitable for cultivation. 这个村庄土层里的养分肥沃，适合耕种。
- The results showed that infiltration irrigation promotes the formation of soil aggregated structure,increases the effective soil nutrients,including NII + 4n itrogen and NO 3 nitrogen and phosphorus. 研究表明渗灌为棉株创造了良好的生长环境，促进了土壤团粒结构的形成，改善了土壤养分状况，铵态氮、硝态氮和速效磷等都有增加。
- The depth of casing should ensure it can penetrate dirty soft soil layer; its bottom should be tightly sealed. 护筒的埋设深度，应确保穿透淤泥质软土层，并做好护筒底部密封。
- That's rather an effective use of color. 这种使用颜色的手法效果相当好。
- Since August, 1998, Xinjiang area began the measure of soil layer bore stress.It was successively completed 7 stations. 摘要自1998年8月起，新疆地区开展土层钻孔应力测量，先后建成7个台。
- Though many creatures of the soil layer are a drab grey-brown or pale and colourless, there is no reason why a few can't be bright and garish. 尽管土层中的许多生物要么是单调的灰褐色，要么体色苍白暗淡，但仍有一些色泽艳丽，甚至是色彩夺目。
