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water and soil相关的网络例句

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与 water and soil 相关的网络例句 [注:此内容来源于网络,仅供参考]

The results showed apple leaf marginal withered was caused by single salt poison in soil. And that the origin of soil salt was irrigated by tiny salt water or middle degree salt water again and again. Along with irrigated number of year increasing, single salt poison tend towards more severity.

结果表明:苹果叶缘焦枯是由于土壤中单盐毒害所致,而土壤中盐分的来源是通过微咸水和中度咸水灌溉累积造成的,随年限的增加,危害日趋严重。

Building hillslope into terraced land is an important engineering measure for soil and water conservation in Ruhe watershed of Guyuan City. On the 15°~25° slope of the hilly area, Guyuan station of soil and water conservation chooses bench terrace as the main form of building hillslope into terraced land.

坡改梯是茹河流域水土保持工程中的一个重要组成部分,在丘陵区15°~25°的缓坡上,固原市水务局选择了建设隔坡梯田作为坡改梯的主要形式。

Compared with the soil water content,it will be much more scientific to use the soil water potential as the lowest limit index of crop non-sufficient irrigation and be easier to be applied and extended.

农田非充分灌溉中,习惯将土壤含水率作为控制灌溉的指标,但实质上,用土壤含水率作为控制指标是有缺陷的。

In order to effectively control soil and water loss of slope land smaller than 25° while not effect the grain production of local area, the function on soil and water conservation of mountain rice has been tested.

为有效地根治 2 5°以下缓坡耕地的水土流失又不影响当地的粮食生产,对旱稻的水土保持作用进行了试验研究。

As shown in the experimental results: as the conductor of petroleum biological degradation, the quantity of microorganism is the important factor of petroleum degradation efficiency, the huge natural capacity of microorganism in soil is its foundation of bioremediation; petroleum density in certain scope do not affect for the degradation efficiency of petroleum, and in the density of 5%, its initial degradation efficiency is higher, however after training 40 days, this kind of advantage change weak gradually, the reason may be the petroleum of high density probably having certain poison role for microorganism; the best ecological condition of petroleum contaminated soil bioremediation is that nutrition material C: N = 60, electron receives body HiOi joining quantity amount to 12 mg/g, water content is 50%, surface activator is anion surface activator of 12 Wan base benzene sulphur sour sodium; the relation of primary and secondary of factor is water content, surface activator, nutrition material and electron receiver.

试验研究结果表明:作为石油生物降解的执行者,微生物的数量是影响石油降解效率的重要因素,土壤中微生物的巨大的自然容量是其生物修复的基础;石油浓度在一定范围内对石油的降解效率并没有影响,并且在5%浓度时,其起始降解效率较高,但是到了培养40天以后,这种优势渐渐变弱,可能还是高浓度的石油对微生物有一定的毒害作用;石油污染土壤生物修复的最佳生态条件为:营养物质C:N为60,电子受体H_2O_2的累计加入量为12mg/g,含水量为50%,表面活性剂为阴离子表面活性剂十二烷基苯磺酸钠;因素的主次关系为:含水量、表面活性剂、营养物质和电子受体。

The quantitative study on the influences of soil structural properties and total organic material content on soil water characteristics, such as water holding within low suctions and saturated infiltration, especially the usage of fractal dimension, can be used in simplifying regional experienced forests-hydrological models.

4定量揭示了研究区土壤结构和有机质含量对土壤低吸力段持水性能、饱和渗透速率等水分的影响,尤其是分形理论的应用,可以为简化区域性经验水文模型奠定基础,同时明确了土壤结构稳定性、水分性质、有机质含量等在土壤侵蚀防治中的作用。

DI is the most ideal irrigation indicator as it is very much influenced by soil water potential and less affected by meteorological factors. DI value of zero is probably the best irrigation threshold. MDS is strongly affected by meteorological factors and requires reference MDS under well-irrigated conditions. RT on the other hand is not significantly related with soil water potential. Therefore neither of these variables is suitable as irrigation index.

DI 受土壤水势影响产生变化的趋势明显并受气象因子影响较小,是最理想的灌溉控制指标,可将 DI =0作为灌溉控制临界值; MDS 受气象因子影响强烈,变异性较大,且需要充分灌溉条件下的 DI 作为参考, RT 与土壤水势的相关性不高,因此均不适合单独作为灌溉控制指标。

The results showed that ridge and furrow cultivation changed micro-topography of farmland and increased soil water content of furrow by collecting the runoff generated from ridge, in favor of downward movement of soil water.

结果表明:垄沟耕作改变了农田微地形,利用垄上降雨顺垄流人沟中,从而拦蓄部分径流,相对增加了沟中土壤蓄水,有利于水分向下运移。

The monitoring experiment for soil and water loss in the spoil ground of BeijingZhuhai expressway's south section within the boundary of Guangdong Province was conducted to study the soil and water loss, ecological control and application effects of the slopes of spoil ground.

在京珠高速公路粤境南段弃土场开展水土流失监测研究,探讨了弃土场的水土流失及其生态治理的水土保持效果。

Centrifuging method was used to determine soil water characteristic curves of four undisturbed soils different in bulk density, and through the experiment, surfaces depicting quantitative relationship between mass water content, pressure head and bulk density in the four soil samples were obtained.

用离心机法测定了四种原状土壤不同容重下的土壤水分特征曲线实测点,从实验上获得了四种原状土壤的质量含水量、吸力和容重三者间定量关系曲面。

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