土壤发生

In the plots of 1985, wilt disease was inhibited by calcium cyanamide and reduced by S-H mixture (product of Taiwan Fertilizer Company) and lime.

一九八五年期，各种添加物并不影响土壤中病原菌之族羣密度，但是氰氮化钙可抑制萎凋病的发生，而SH混合物及石灰处理则可延迟病势的发展。

Fusarium wilt of peas and its causal organism, Fusarium oxysporum f. sp. pisi, could be effectively suppressed by amending the soil with calcium cyanamide (CaCN2) in greenhouse.

温室试验结果显示，施用氰氮化钙(CaCN2)可有效降低土壤中豌豆萎凋病菌的数目和抑制豌豆萎凋病的发生。

It was rev ealed that:cuprite,malachite and tenorite are the three main kinds of copper-bea ring minerals which would be supersaturated when Cu concentration in the solutio n is high enough(higher than 0.0016 mol/L,0.0079 mol/L separately) under the stu dy conditions.Copper exists in the solution mainly as the species of CuCO3 ,Cu2+ and CuOH+.The corresponding content of CuCO3 would be decrea sed following the deposition of the copper-bearing minerals,nevertheless,Cu2 + and CuOH+ would be increased.

模拟结果表明，在土壤中常见的E h和pH及研究区的年平均温度条件下，溶液中铜离子的含量达到一定的浓度时，可以生成赤铜矿(当Cu≈00016 mol/L)、孔雀石及黑铜矿(当Cu≈0 0079mol/L)等次生矿物，溶液中Cu的存在形式也发生了变化，即CuCO3所占的比例不断减小，而Cu2+和CuO H+的含量则相继增高，且Cu2+的增幅大于CuOH+。

First of all, as the forests disappeared, the propagation decreased, while some kinds of plants and animals were even close to deracination or had already died out. Next, the natural disasters, such as flood, drought, and tornado, etc. broke out more frequently and strongly. Again, without the protection by forests, soil erosion and fertility decline together with other problems appeared. Finally, forest vicissitude also had negative effect to social economy and people's lives.

首先是由于森林面积的减少，导致一些森林动植物的数量减少，濒临灭绝，甚至消失；其次，森林的变迁导致海南岛水灾、旱灾和风灾等自然灾害发生次数增加，强度加大；再次，土地失去森林的保护而引发严重的水土流失和土壤肥力下降等种种问题；最后，森林的变迁还对社会经济及人们的生活产生不利的影响。

On base of investigating and analyzing,the species,occuring ruleand disserve characteristics of alfalfa field weeds in Beijing area were discussed.And put forward weed control methods of alfalfa seedlings were put forward.

本文在调研、分析北京地区大田苜蓿地杂草种类、发生规律及危害特性基础上，采用土壤耕作、刈割和化学药剂相结合的措施，对苜蓿幼苗地和大田杂草进行综合防治，取得良好效果。

The results illustrate that the dustfall in Hotan is influenced by days and intensities of airborne dirt,raising sand and sand storm and has important effect on the soil.

通过野外调查、定位试验和室内分析，探索了新疆和田扬沙、沙尘暴、大风和浮尘产生的原因及发生规律与土壤降尘量的关系及其时空变化特点。

The results showed that soil corrosion of mild steel was not only influenced by surrounding media but also controlled by the amout, structure and efflorescence extent of corrosion products at different stages.

本工作以埋在苏打盐土中的A3钢为例，用实验论证低碳钢的腐蚀速度与腐蚀发生与发展的不同时期密切相关，为认识土壤中钢铁的自然腐蚀规律及其机理提供依据。2实验方法2。

In atmosphere, lightning , strong electric field , rock , ray in soil also can make air ionization happened; Waterfall , fountain , sea wave , rainwater etc., the meeting uses water and the windage but produces a free electron.

大气中闪电、强电场、岩石、土壤中的射线也能使空气发生电离；瀑布、喷泉、海浪、雨水等，会使水与空气摩擦而产生自由电子。

The results of tests on salt content and soluble ions of these samples show that: pH value of soil in this area is between 7.82 ~ 8.26, the thickness of salt collection layer is in 0~20cm, 40~60cm,soil salt is on up as a whole, but there is also some eluviation.

样品的盐分以及各可溶性离子含量的测试结果表明：区内土壤pH值在7.82～8.26之间，盐分聚集层的厚度在0～20 cm，40～60 cm，总体以盐分上行为主，但也有淋滤作用发生。

It is found that montmorillonite and kaoline show different behaviors of dissolution and precipitation, which greatly alter the potential grade crossing the whole soil areas.

本文采用自制的电动修复装置，研究了模拟土壤组分高岭土和蒙脱石在外加电场条件下发生的变化。

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