查询词典 water and soil

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。

The air pressure changes and its influence under ponding infiltration are important to guide water saving irrigation and soil water conservation.

本文试图通过试验研究、理论推导两个方面，对非饱和渗透系数的确定及积水入渗过程中土中水—气运动规律进行较为全面、深入地研究。

The ammonia volatilizing of fertilizer is suit to the dynamic equation as Y=a+bt, the coefficients in the equation are related to the kind of fertilizer, temperature and water content of soil, and the dynamic equation about ammonia volatilization including water and temperature and the is developed.

肥料氨累积挥发量符合零级反应动力学方程Y=a+bt，方程中系数与肥料种类、温度和土壤含水量有关，碳铵a、b值均比硫酸铵高，土壤含水量增大，a、b值降低，温度升高，a、b值增大，并由此得到含温度或土壤湿度因子的肥料氨挥发动力学方程，并建立了含水、热因子的肥料氨挥发水热耦合效应动力学方程。

And through the principle of effective stress constitutive model; pore water pressure, pore air pressure; and pore water and consolidation of the environment; three-part analysis and discussion that the principle of effective stress based on modern soil mechanics, faced with a large theoretical and practical test.

并通过对有效应力原理的本构模型；孔隙水压、孔隙气压；和孔隙水与固结环境；三个部分的分析、讨论，认为以有效应力原理为基础的现代土力学，面临具大的理论和实践的考验。

The job of agricultural drainage is to accelerate removing of the excessive water and salt in soil,control the underground water table at favourable depth,so that it can assure crops growing well and avoid salinization.

农田排降任务是加速排除土壤中过量的水分及盐分，控制地下水位在适宜的深度，保证作物的正常生长及防止土壤返盐。

The ammonia volatilizing of fertilizer is suit to the dynamic equation as Y=a+bt, thecoefficients in the equation are related to the kind of fertilizer, temperature and water content of soil, and the dynamic equation about ammonia volatilization including water and temperature and the is developed.

肥料氨累积挥发量符合零级反应动力学方程Y=a+bt，方程中系数与肥料种类、温度和土壤含水量有关，碳铵a、b值均比硫酸铵高，土壤含水量增大，a、b值降低，温度升高，a、b值增大，并由此得到含温度或土壤湿度因子的肥料氨挥发动力学方程，并建立了含水、热因子的肥料氨挥发水热耦合效应动力学方程。

This paper discusses the varying laws of soil water and nutrients in thecase of different fertilizer conditions thereby to reveal the effects of water and fertilizerand its inter-reaction upon crop nutrient uptakes,moisture utilization and growth anddevelopment.

探讨了旱地农田不同水肥条件下土壤水分和养分的变化规律，揭示了水和肥及其相互作用对作物养分吸收、水分利用以及生长发育的影响。

The water content and soil nutrient concentration are the highest near the 155-meter height of water level. The vertical distribution of vegetation spatial pattern demonstrates four belts, which respectively include Floodplain annual herb belt, Xanthium sibiricum belt, Paspalum paspaeoides belt and riparian Heights High-grass plants belt.

3受三峡库区蓄水水位变动影响下的的研究区域，表征河流生境变化的水分格局、土壤养分、植被分布均表现为明显的梯度变化，水分、土壤养分在155m附近为最高；植被空间格局呈四个带垂直分布，即从低海拔到高海拔依次为河漫滩一年生草本植物带、苍耳带、双穗雀稗带和河岸高地高草植物带。

Determining the structure of macropore can better understand and predict the behavior of water and solutes in macroporous soil, and help to protect the environment of underground water.

确定土壤大孔隙结构，可以很好地理解和预测水及溶质在有大孔隙土壤中的运移，保护地下水环境。

In the pot test, with the hybrid mid-rice Liangyoupeijiu as material,4 soil water potential (flooding, 0,-30 and 60 kPa) and 5 nitrogen levels (0, 1.5, 2, 2.5 and 3.0 g/pot) were set up to study the effects of water and fertilizer coupling on growth characters and yield of rice.

方法］在盆栽试验中，以杂交中稻两优培九为材料，设4种土壤水势（淹水、0、-30和-60 kPa）和5种氮肥水平（0、1.5、2、2.5和3.0 g/盆），研究水肥耦合对水稻生长性状及产量的影响。

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。