查询词典 soil conservation

Soil and water conservation effects from using Vetiveria zizaniodes to protect the slope were significant. Soil loss from the slope where Vetiveria zizaniodes grows decreased by 92.24%, and the slope was stable compared with the control plots.

采用香根草生态护坡技术治理弃土场边坡水土流失，水土保持效果显著，坡面土壤流失量比对照小区减少92.24%，边坡稳定。

Soil and water loss in the gullied loess hilly region in northern Shaanxi attracts worldwide attention, where soiseasonable distribution of contour shrub belt is of significant soil and water conservation effect with runoff decrease of over 30%, sediment reduction of more than 50%, and it can also increase plant coverage of 15％ to 20% on slope farmland and forms shrub network on hill slope,and change the situation of ecological environment deterioration and sparse vegetation.

摘 要］陕北黄土丘陵区的水土流失问题举世瞩目，而坡耕地的水土流失尤为严重。资料表明，配置合理的等高灌木带具有较强的保持水土效益，其径流削减率在30%以上，泥沙削减率在50%以上，可增加坡耕地植被覆盖度15%～20％，在峁坡上能很快形成林网，大大改观坡耕地长期植被稀疏、生态环境恶化状况。

As a result silver chai n forest land has a better capacity in soil and water conservation than naked l and. It can reduce surface runoff than naked land when rainfall changes around 3 0mm. In 2000, 179.42 g/m~2 soil were lossed in silver chain forest land, 980.1 g/m~2 in naked land on the contrary.

结果表明，与裸地相比刺槐林有很好的水土保持作用，能明显地减少地表径流和泥沙侵蚀。3 0 mm左右降雨量，有林地减少地表径流的能力是无林地的 3倍以上。2 0 0 0年径流观测场有林地土壤流失量为 179.4 2 g/ m2 ，无林地土壤流失量为

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。

Second, effects of conservation tillage on soil enzyme activities. SS had higher urease activity and sucrase activity in 0~20cm soil layer.

2保护性耕作对土壤酶活性的影响深还0~20cm土层脲酶和蔗糖酶活性较高。

Peat has properties of water and nutrient conservation, its soil organic matter and cellulose was also rather abundant, so peat is an important soil amendment.

中文摘要：草炭有机质含量高，疏松多孔，纤维含量丰富，保水保肥力强，是一种重要的土壤改良剂。

It is advanced farming technology which through the implementation of reduced tillage, no-tillage technology, using crop stalks stubble ground cover to reduce soil water erosion, wind erosion, so as to enhance the capacity of soil fertility and drought-resistance .Function and role of conservation tillage technology have been proved by practice.

保护性耕作技术是相对于传统耕作的一种新型耕作技术，起源于19世纪末的美国，通过对农田实行少耕、免耕技术，尽可能用农作物秸秆、残茬覆盖地表，以减少土壤水蚀、风蚀，从而提高土壤肥力和抗旱能力的先进耕作技术。

This research reveals that dynamic action is the root reason for soil water-erosion, and that law of conservation of mass and energy is the basic principle of soil erosion, and that the coexistence of erosion and sediment is a universal rule of soilwater-erosion.

根据力学和物质与能量原理，对土壤水力侵蚀这一自然地理现象从哲学的高度进行分析，认为水动力作用是土壤水力侵蚀的根本原因；物质与能量守恒是土壤水力侵蚀的基本法则；侵蚀与沉积并存是土壤水力侵蚀的普遍规律。

This research reveals that dynamic action is the root reason for soil water erosion, and that law of conservation of mass and energy is the basic principle of soil erosion, and that the coexistence of erosion and sediment is a universal rule of soilwater erosion.

提出基于能量力学机理的 3个土壤水力侵蚀的新理论，即侵蚀平衡理论、最大梯度理论和水流侵蚀力理论。

Soil and water conservation monitoring in construction project is of great significance to soil and water loss control.

开发建设项目的水土保持监测工作对于防止新的水土流失具有十分重要的意义。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。