bulk matter 中文意思是什麼
bulk matter
解釋
大塊物質-
The results showed that straw returning had not significantly increased the content of organic matter except for the treatment b. the treatments of straw - returning had a tendency to decrease the bulk density of soil in a no significant manner, thus increased the porosity of soil
實驗室內對土壤微團聚體的分析還表明，隨著稻草的施入，土壤的微團聚化程度得到了提高，但全量整株還田處理與其它處理之間差異很小。 -
Exchangeable aluminium, humic acid component content in rhizosphere soil and non - rhizosphere soil, activity acidity, organic matter content, humus component content, total amount of fifteen types of amino acid, the content of various forms of phosphorus, the amount of three main types of microbes, enzyme activity, and bulk density in non - rhizosphere soil increased
根際和非根際土壤交換性鋁含量、胡敏酸組分，非根際土壤活性酸、有機質含量、腐殖質組成、 15種氨基酸總量、各磷形態含量、三大土壤微生物數量、酶的活性和土壤容重增加。 -
Mongolica young stand, secondary natural forest, and the mixed forest of larix olgensis and fraxinus mandshurica rupr. countermeasures for controlling soil degradation were also recommended. the study got following results : ( 1 ) from young stand to mid - age of larix olgensis, with the closure of canopy and the decrease of undergrowth vegetation cover, soil acidity, enzyme activity, total inorganic phosphorus, available k, soil moisture and total porosity decreased significantly ; while soil organic matter content, humus component content, the amount of three main types of microbes, acid phosphatase activity, and bulk density in rhizosphere soil and non - rhizosphere soil increased with the increase of the amount of forest floor litter ; from mid - age stand to near mature stand, with the decrease of stand density and crown cover as well as the restoration of undergrowth vegetation after preliminary thinning, soil organic matter content, fulvic acid, exchangeable acidity, exchangeable aluminium, neutral phosphatase activity, total amount of inorganic phosphorus, the amount of actinomycetes, soil moisture, and total porosity in rhizosphere soil and non - rhizosphere soil apparently increased ; from near matu re stand to mature stand, soil activity acidity, organic matter content, humus component content, available phosphorus, total amount of amino acid, available k, soil enzyme activity, soil moisture, and total porosity in rhizosphere soil and non - rhizosphere soil decreased, but total phosphorus, soil acidity ( in particular, exchangeable aluminium ), and bulk density increased
結果表明： （ 1 ）從落葉松幼齡林到中齡林，隨著林冠的郁閉和林下植被蓋度的急劇下降，林地土壤酸度、土壤酶活性、無機磷總量、速效鉀、土壤水分含量、總孔隙度呈明顯下降趨勢，而根際和非根際土壤有機質含量、腐殖質各組分含量、三大類微生物數量、酸性磷酸酶活性和土壤容重隨著凋落物的增加呈明顯上升趨勢；從中齡林到近熟林，由於撫育間伐，林分密度及郁閉度下降，林下植被蓋度逐步得到恢復，根際與非根際土壤有機質含量、富里酸、交換性酸、交換性鋁、中性磷酸酶、無機磷總量、放線菌數量、土壤水分含量、總孔隙度呈明顯的上升趨勢；從近熟林到成熟林，隨著林齡的增大，根際與非根際土壤活性酸、有機質含量、腐殖質各組分含量、有效磷含量、氨基酸總量、速效鉀、土壤酶的活性、土壤水分含量和總孔隙度呈下降趨勢，而根際與非根際土壤全磷含量、土壤酸度（特別是交換性鋁）和容重呈增加趨勢。 -
The result indicated that straw mulching could increase soil porosity by 2. 88 % - 5. 76 %, reduce soil bulk density by 1. 86 % - 3. 73 % and the content of soil water with straw mulching was higher than that with no straw mulching treatment ( ck1 ) at different growth stage, improve water - stable aggregate ; and increase soil organic matter, available n, available p, available k, improve soil perviousness and soil retention of water and fertilizer
研究結果表明，與對照ck1 ，相比，秸稈覆蓋可使土壤總孔隙度增加2 . 88 % ~ 5 . 76 % ，土壤容重降低1 . 86 % ~ 3 . 73 % ，並且各生育期覆蓋處理的土城含水量均比對照高，並且秸稈覆蓋還田對促進土壤團粒結構形成具有較大作用，改善了土坡通透性和保水保肥性；同時秸稈覆蓋還田使土壤有機質、全氮、速效氮、速效磷、速效鉀得到明顯提高，從而培肥地力。 -
Organic matter and available n of topsoil decreased in recreational areas, but the soil bulk density and ph increased. affected by garbage decomposing, soil available p concentration varied obviously in recreational areas
活動區土壤有機質含量降低， ph值升高，容重增大，堿解氮含量降低，受垃圾分解影響，速效磷含量發生變化。 -
This study used some techniques such as organic geochemistry bulk composition combined with molecular geochemistry, source rock analysis and evaluation of organic petrology, carbon isotopes of organic matter, petroleum geology inference etc. the emphasis is mainly concentrated on the source rocks belong to the shahejie formation of pal eocene, including the source rock evaluation of denan region, geochemistry of the source rock, biomarkers of immature oils and source rocks. then the ancient geological environment was established and immature oil formation mechanism was proposed. following results have been tentatively proposed in this thesis : 1 ) based on the organic petrology studies, most of source rocks in this region is belong to immature source rock
本項研究以德南窪陷重點烴源巖- - -下第三系沙河街組為對象，應用有機地球化學理論與方法對其有機質類型和豐度、成熟度、生烴潛量等進行研究；通過特徵生物標志化合物的分析，闡明研究區未熟-低熟烴源巖母質構成、沉積環境和成熟演化；通過油源對比和生烴條件綜合分析，提出本區烴源巖生烴機制，建立未熟-低熟烴源巖有機質生烴模式。 -
The field capacity and porosity increase gradually and bulk density decrease gradually. the significance linear regression between the field capacity and soil organic matter is discovered as well as porosity and bulk density
此外，隨植被演替， 0 5cm土層田間持水量和孔隙度逐漸增加， 0 5cm土層容重逐漸降低，且均與有機質含量呈顯著線性正相關。 -
Soil improvers and growing media - sample preparation for chemical and physical tests, determination of dry matter content, moisture content and laboratory compacted bulk density
土壤改良劑和培養基.物理和化學試驗干物質含量和潮氣含量及實驗室壓實鬆散材料密度試樣制備 -
Clusters are the aggregates of a few to thousands atoms or molecules or ions their properties are neither like those for individual atoms nor the corresponding bulk and therefore clusters are named " the fifth state of the matter ". during the development of cluster science, many concepts and methods have been introduced from nuclear physics, condense matter physics and quantum chemistry, cluster science has became an new interdisciplinary field between atomic - molecular physics and condensed matter physics
團簇（ clusters ）是由2 104個原子、分子或離子通過物理或化學結合力組成的相對穩定的微觀和亞微觀聚集體，它的空間尺度在幾a至幾百a范圍內，被人們看作是介於原子分子和宏觀固體之間物質結構的新層次，並稱之為物質的「第五態」 。
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