Mathematical Model for Controlling Soil Erosion by Vegetation and Its Application.

Properly managed forests prevent flooding and soil erosion, and stabilize climatic conditions.

管理得当的森林可以防止土壤的冲蚀和水灾, 而且可以稳定气候状况.

Soil erosion is a result of comprehensive effect of geographical environment factors.

土壤侵蚀是地理环境各因子综合作用的结果.

Of course, more than planting trees to prevent soil erosion.

当然还要多植树造林,防止水土流失.

Soil erosion and non-point source pollution are two serious environmental issues.

土壤侵蚀与 非 点源污染是两大重要的环境问题.

The methods involve soil fertility management as well as reduced tillage.

这些方法包括管理土壤肥力和减少耕作.

There's really not very much food down there. About two weeks' worth.

那儿真的没多少吃的了,大概能维持两个星期.

With increase of matter input, the restoration of soil fertility quality was accelerated gradually.

随着物质投入量的增加, 土壤肥力质量的恢复也逐渐加快.

The fertilizer can raise soil fertility significantly, and increase the content of organic matter.

有机肥能有效地提高土壤肥力, 并可以有效地促进土壤有机质的增加和更新.

Only 12 weeks ago he underwent major heart transplant surgery.

12个星期前他才刚刚接受了风险很高的心脏移植手术。

Organic standards require soil fertility conservation and promotion of natural enemies ( see above ).

有机标准要求通过天敌保持和改善土壤肥力 ( 见上 ).

The serious effects of sand gold mining on soil fertility were paper.

砂金开采对土壤肥力产生严重影响.

Strip check space varies with plot slope, soil fertility and irrigation.

条畦宽度随地块坡度 、 土壤肥力和灌溉而变化.

The soil fertility shows a decrease trend in cornpea rotation.

玉米、豆轮作,土壤养分均呈下降趋势.

Principal component analysis was used to derive soil fertility variation factors.

运用主成分分析选取土壤肥力变异因子.

Soil fertility could be evaluated objectively by principal component analysis.

土壤主成分分析能较为客观地评价土壤肥力水平.

The different land use patterns affect soil physical property and soil fertility quality.

不同的土地利用方式影响着土壤的理化性质及土壤质量.

Therefore microorganism quantity and enzyme activity of soil alsoused as an evaluation index of soil fertility.

土壤微生物数量、酶活性与土壤养分含量之间存在相关关系,可以作为评价土壤肥力的指标.

Improve soil aggregate structure, reduce compaction, improve soil fertility activation.

改良土壤团粒结构, 减少板结, 提高活化土壤肥力.

Candle burning themselves Gan , Gan chunhua soil fertility.

甘为红烛燃自身, 甘为泥土育春花.

After soil improvement, the yield of this land has increased greatly.

改土后, 这块地的产量大幅提升.