土层

No evident regularity was found in the depth from 15 to 30 cm. There was an obvious accumulation of OM and TN in the top 30 cm of the fallowed soils, of which the accumulation of OM was faster than that of TN and there was more accumulation in no-tillage compared to tillage. Soils applied with inorganic and organic fertilizers had much more OM and TN at 0～5 cm and 5～15 cm depth than soils applied with only inorganic fertilizers and soils without fertilization. However, OM and TN in these treatments were less than that in fallow treatment. No significant differences in OM and TN contents were found between fertilization treatments. Only in the 5 cm of top soils, OM and TN of the soils treated with only inorganic fertilizers were more than that of CK.

长期休闲的土壤在整个耕层有明显的有机质和氮素累积，其中碳的累积快于氮的累积，免耕条件下比耕翻条件下累积量更大。0～5 cm和5～15 cm土层有机肥与无机肥配施的处理，其有机质和全氮质量分数均显著高于单施化肥处理和不施肥处理，但均低于休闲处理；15～30 cm土层各培肥处理则无明显差异；单施化肥的土壤有机质和全氮质量分数高于不施肥处理，但这种差异只在表层（0～5 cm）较显著。

However spinach yield in the plots after sweet corn harvest and fallowing was significantly higher than that after amaranth.

种植填闲作物后土壤0～90cm土层中NO_3~--N含量降低到100kg／hm~2N以下，但90cm以下土层NO_3~--N含量仍较高，休闲处理表现出明显的氮素矿化和淋溶现象。

The irrigation rate of infiltration irrigation and drip irrigation was half the rate of furrow irrigation in each event.

从累积矿化氮量－时间曲线变化的趋势看，可将保护地土壤0~50cm剖面分为三个层次，其中渗灌与滴灌处理相似，为0~20cm、20~40cm和40~50cm土层，而沟灌处理则为0~30cm、30~40cm和40~50cm土层。

The results show that for a certain depth and damping coefficient, if the wave impedance ratio is small, the seismic re...

计算结果表明，对于一定的土层厚度，在一定阻尼比条件下，土层和基岩的阻抗比小到一定程度时，可以将基岩假定为刚性约束，而误差可以控制在一定的范围内。

In this paper,a method of one-layered model replacing multi-layered model to calculate soil transfer function is discussed.And the feasibility of the method is studied by earthquake records SMART-1 array.

探讨了用单一土层模型替换复杂场地求解土层场地传递函数的方法，并用SMART-1台阵地震记录对这一方法的可行性进行了研究和讨论。

A hardened soil horizon, usually in the middle or lower part of a soil profile, A hardpen is typical of PODSOLS, where iron compounds leached from the upper layers accumulate in the B horizon, staining it red-brown and forming an impermeable layer that can prevent drainage, resulting the in waterlogging of higher horizons.

硬质地层是一种典型的灰壤，其中铁的化合物从上层土壤中渗出，在 B 层中聚集，使得土壤呈现棕红色，构成了极难透过水的土层，这种地层的存在使上层的土层更易发生水涝。

Compared with bed planting,there was higher soil water storage in wheat furrow planting field,however,there was lower dispersion of soil water storage at the same stage on 0~90 cm layer of furrow planting field and the similar dispersion of soil water sto...

从沟播和垄作麦田土壤贮水量差值的分析可以看出，沟播麦田土壤贮水量要明显高于垄作麦田，沟播的同一时期沟垄间的土壤水分差异在0 90cm土层要低于垄作的，而10 0 12 0cm土层就极其相近。

Under the plastic-mulched ridge and furrow cultivation, the average soil water content of furrow (12.7%) was significantly higher than that of ridge (9.1%) at the soil depths of 20-100 cm. The locally compacted ridge served as a water flow barrier and a rainfall collection area under locally compacted ridge and furrow cultivation, and the water content of furrow was significantly higher than that of ridge in the same soil depths, which was similar to the characteristic of soil water distribution under plastic-mulched ridge and furrow cultivation. No significant differences were found in soil water content of furrow between locally compacted ridge and furrow cultivation and plastic-mulched ridge and furrow cultivation, with the same efficiency of water collection.

相对于自然垄沟，膜垄的集雨效果明显，沟中土壤平均含水量显著高于垄中，20～100cm土层范围内平均土壤含水量分别为12.7％和9.1％；成垄压实土壤水分在剖面分布状况与盖膜垄沟的水分分布相似，水分向沟内集中，沟中土壤水分含量显著高于同一土层深度处垄中土壤含水量，且与盖膜垄沟处理下沟中土壤水分含量无显著差异，在集水和聚水方面表现出和膜垄的相似性。

Based on the deep foundation pit project of tunnel in Nanjing metro west extending line, the supporting methods of the bored pile biting into deep mixing pile in soft soil are discussed. The key construction techniques and monitoring results for the supporting form in watered and soft soil bed are expounded. The ability of resisting seepage must be considered when insertion depth of supporting structure is designed, which may also prevent the skirting from losing its stability.

以南京地铁西延线区间隧道的深基坑工程为背景，对软土层条件下的钻孔桩咬合深搅桩的支护方法展开探讨和研究，著重阐述含水软土层中该围护型式的关键施工技术和监测结果，指出在设计围护结构插入深度时必须考虑抵抗渗流破坏的能力，同时安全的插入深度也是防止维护结构&踢脚&失稳的保证。

The results showed that (1) compared with conventional N treatment, the N loss of economic N treatment reduced while NUE and N residue in soil improved under water-saving condition;(2) Use efficiency of fertilizer applied as basal fertilizer was higher than that as top-dressing fertilizer under water-saving condition;(3) The fertilizer N residue rate was from 29% to 41%, and 60% of N residue, which distributed in 1m depth soil concentrated in 0～20cm surface layer;(4) In whole growing stage of wheat, fertilizer N hadn't leach to 130cm depth;(5) NUE of economic N treatment under conventional irrigation decreased by 16.6% compared with the same N treatment under water-saving condition.

结果表明，与常规施氮量处理相比，节水灌溉条件下节肥施氮量处理的氮肥损失率降低，氮肥当季利用率和土壤残留率提高；基施氮肥的利用率高于追施氮肥；土壤肥料氮的残留率在 2 9%～ 41 %之间，分布于 1m土层中，其中60 %以上集中在 0～ 2 0cm土层；在整个小麦生长季内，肥料氮并没有淋洗到 1 30m以下。节肥施氮量在常规灌溉下的当季利用率比在节水灌溉下降低 1 6 6%。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失