土壤覆盖

The forming mechanism and the changing regular of soil water content under plastic mulch were systematically expounded.

系统阐述了地膜覆盖土壤水分效应的形成机制及其变化规律。

Effects of plastic film mulch on soil microbial biomass in spring wheat field in semi-arid loess plateau.

不同时间地膜覆盖对半干旱区春小麦土壤微生物生物量的影响。

Because of the high organic matter at the soil surface and the presence of a crop residue mulch, soil water also tends to be higher at the soil surface.

由于土壤表层有机质含量较高且有植物残体的覆盖，所以其水分含量也较高。

A 3-year-long field experiment was carried out to investigate the effects of nitrogen rate on nitrogen uptake and utilization of winter wheat and residual nitrate in soil under straw mulch.

通过田间定位试验研究秸秆覆盖条件下施氮量对小麦氮素吸收利用及土壤硝态氮残留的影响。

If a test finds that soil has too much lead, you might be advised to remove the soil or cover it with sod grass.

如果检测结果表明土壤中铅含量过高，建议你把这些土移走或种上草皮加心覆盖。

Snow pack directly influences soil temperature, freezing and thawing depths,freezing speed and upward migration cours...

积雪覆盖直接影响土壤温度、冻结融化深度、冻结速度和水分向上的迁移过程、融化过程中的蒸发和入渗过程等。

The ash is now the soil, olive and fruit trees cover the landscape, and former Atlantis (Crete, Santorini, and perhaps other Aegean islands) is mostly buried.

火山灰现在是土壤，橄榄树和果树覆盖着土地，从前的亚特兰蒂斯（克里特，圣多里尼，很可能还有其他爱琴海的岛屿）大部分都被埋藏了。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。