English translation for "土表"

soil surface

Example Sentences:

	1.	These soils are well developed and contain a subsurface horizon in which clays have accumulated 发育良好，土表下有一层粘土淀积土层。
	2.	The efficiency that black mulch increases soil temperature , that is , transfers heat from the mulch to the soil , can be improved by optimizing contact between the mulch and the soil surface 黑色塑料薄膜提高土壤温度的效率（即把热能从薄膜传递到土壤）可以通过使薄膜与土表最适的接触来提高。
	3.	Description : the soil covers is not sufficient to stop erosion ; nor are the physical structures . the only solution is to find appropriate crops to produce enough residues to favour infiltration 土表覆盖不足不能够阻止侵蚀、改变土壤结构。只有寻找合适的、能够生产足够残茬的作物，才有利于水份的渗透。
	4.	Even though potassium is stratified under reduced tillage （ as it is in a permanent sod ） , it is apparent that roots proliferate sufficiently near the soil surface to assume adequate potassium uptake by crops 虽然在少耕制下，土壤钾有明显的分层分布（象永久性草地一样） ，但在土表附近，作物根系发达保证作物对钾有足够的吸收。
	5.	Organic matter is higher at the soil surface because plant residues from either grasslands or no - till are left on the surface whereas residues in conventional fields are mixed in the soil ; giving uniform organic matter 在草地和免耕方式下，植物残体留在土表，所以表层土壤的有机质含量较高，而在传统耕作制下，植物残体被翻入土内，所以各层土壤中有机质含量差别不大。
	6.	This is also the busiest time of year for local tourism . the fields are drained during december and january and , when the land is dry , the lotus roots are harvested . several different lotus varieties can be seen in paiho 每年六月到九月是莲子采收期，尤以七月到八月是莲子的盛产期，也是莲花观光季，十二月到翌年一月则自莲田中排出田间之水，待土表乾后，开始采收莲藕。
	7.	Meanwhile , most aspects about this perspective are concerned , which include quantification of the soil water background of the plateau area , the regional spatial variation of soil water background and variation along the slope , mosaic structure and seasonal changes etc . the results show that : ( 1 ) for the fundamental circumstance for vegetation development is the original debilitated slope , so the perspective of soil water background specially for the loess plateau refers to the soil water conditions on the original slope . ( 2 ) the value of soil water background appears to be a descending trend from south to north based on the difference of vegetation zones . in the forest zone , soil moisture contents beneath 3m depth from the soil surface are more than 12 % usually ; in the forest - pasture zone , the values of soil moisture content beneath 4m depth underground are more than 6 % and stable , and tend to be ascending while the depth increases ; but the values in the dry pasture zone is lingering between 4 % to 6 % from the surface layer to sub - layers 发展了“土壤水分背景”的概念，并以之为基础对其各个方面进行了研究，使之形成一个相对独立和完整的体系，主要包括黄土高原土壤水分的背景值、土壤水分背景的区域分异、坡面分异、镶嵌结构及其季节分异等： ( 1 )由于植被生长发展、演替的基础阶段是天然草被群落，故认为黄土高原的土壤水分背景在概念上是特指该区天然草被群落下的土壤水分状况； ( 2 )黄土高原的土壤水分背景值，根据植被地带的不同表现出自南向北逐渐降低的规律：森林地带3米以下土层水分背景值普遍稳定地高于12 ，森林草原地带4米以下土层水分背景值稳定大于6 ，且均随土层的加深水分含量逐渐增加，而草原带的土壤水分背景值自土表至底土层一直在4 6之间徘徊。
	8.	( 2 ) irrigating with less water , only when the quantity of irrigating water in a puddle is more than 4000m1 , it can spread into 20cm depth where the crop roots are gathered . otherwise , it is hard for the crops to absorb the irrigating water , and the irrigating water is wasting . ( 3 ) the vertical distribution state of n . p . k . is that , n . moves with the irrigating water fast and most of n . gathers in the soil of 30 - 40cm depth ; the moving rules of p . and k . are similar （ 3 ） n 、 p 、 k元素在土壤中的垂直分布状况为： n素随滴灌水在土壤中的流动性较强，在30 ? 40cm土层集聚量较大； p素和k素在土壤中运移规律基本相似，都以土表集聚为主，到30 ? 40cm土层， k ~ +含量就接近对照，这说明土表滴灌施钾肥实际意义不大。

Similar Words：

"土被结构" English translation, "土本" English translation, "土崩" English translation, "土崩瓦解" English translation, "土边坡" English translation, "土表层" English translation, "土表处理" English translation, "土表下5" English translation, "土表下50" English translation, "土表至200" English translation