- 行业: Earth science
- Number of terms: 26251
- Number of blossaries: 0
- Company Profile:
An international scientific society that fosters the transfer of knowledge and practices to sustain global soils. Based in Madison, WI, and founded in 1936, SSSA is the professional home for 6,000+ members dedicated to advancing the field of soil science. It provides information about soils in ...
指定的高度，在重力場中提高身體所需的工作量。的重力的頭表示重量能量，等於 Z，在以上任意參考高度 (z) 的土體中測量點的距離。重力勢表示為每個卷的能量，等於距離提出的產品、 Z、 水密度，ρ 和萬有引力常數 g (ρgZ)
Industry:Earth science
在某一特定數量的土壤或多孔介質中的固體顆粒的面積。(i) 打賭表面積是這一領域的氣體分子，如 N2 或 O2，可以吸附，通常不包括擴大蒙脫石等粘土的平面表面。(ii) EGME 表面地區是那在哪乙烯乙二醇單乙醚可以吸附其中通常包括擴大蒙脫石等粘土的平面表面。
Industry:Earth science
En metod för att förbereda skogen jordar för plantering eller sådd som består av mekaniskt trycka undan humus lagret att exponera mineraljord.
Industry:Earth science
Any organic or inorganic material of natural or synthetic origin (other than liming materials) that is added to a soil to supply one or more plant nutrients essential to the growth of plants. These may include:
* acid-forming - Fertilizer that, after application to and reaction with soil, increases residual acidity and decreases soil pH.
* blended - A mechanical mixture of different fertilizer materials.
* bulk-blended - A physical mixture of dry granular fertilizer materials to produce specific fertilizer ratios and grades. Individual granules in the bulk blended fertilizer do not have the same ratio and content of plant food as does the mixture as a whole.
* complete - A chemical compound or a blend of compounds that contains significant quantities of all three primary nutrients, N, P, and K. It may contain other plant nutrients.
* compound - A fertilizer formulated with two or more plant nutrients.
* controlled-release - A fertilizer term used interchangeably with delayed release, slow release, controlled availability, slow acting, and metered release to designate a controlled dissolution of fertilizer at a lower rate than conventional water-soluble fertilizers. Controlled-release properties may result from coatings on water-soluble fertilizers or from low dissolution and/or mineralization rates of fertilizer materials in soil.
* granular - Fertilizer particles sized between an upper and lower limit or between two screen sizes, usually within the range of 1 to 4 mm and often more closely sized. The desired size may be obtained by agglomerating smaller particles, crushing and screening larger particles, controlling size in crystallization processes, or prilling.
* injected - Placement of fertilizer into the soil either through use of pressure or nonpressure systems.
* inorganic - A fertilizer material in which carbon is not an essential component of its basic chemical structure.
* liquid - Fertilizer wholly or partially in solution that can be handled as a liquid, including clear liquids and liquids containing solids in suspension.
* mixed - Two or more fertilizer materials blended or granulated together into individual mixes. The term includes dry mix powders, granulated, clear liquid, suspension, and slurry mixtures.
* organic - A material containing carbon and one or more plant nutrients in addition to hydrogen and/or oxygen.
* pop-up - Fertilizer placed in small amounts in direct contact with the seed.
* salt index - The ratio of the decrease in osmotic potential of a solution containing a fertilizer compound or mixture to that produced by the same weight of NaNO3 x 100.
* sidedressed - A fertilizer application usually banded to the side of crop rows after plant emergence.
* slow-release - See fertilizer, controlled-release.
* starter - A fertilizer applied in relatively small amounts with or near the seed usually during planting for the purpose of accelerating early growth of the crop plants.
* suspension - A fluid fertilizer containing dissolved and undissolved plant nutrients. The undissolved plant nutrients are kept in suspension with a suspending agent, usually a swelling type clay. The suspension must be flowable enough to be mixed, pumped, agitated, and applied to the soil in a homogeneous mixture.
* top-dressed - A non-incorporated surface application of fertilizer to a soil after the crop has been established.
Industry:Earth science
Zona inmediatamente encima de la mesa de agua donde el suelo está saturado, pero bajo la presión subatmosférica.
Industry:Earth science
