fraxinus 中文意思是什麼

Samara a nut or achene whose pericarp is extended to form a wing for wind dispersal, e. g. ash ( fraxinus excelsior )

翅果：指堅果或瘦果中果皮延伸成翼狀，以利於風媒傳播的果實類型。如白蠟樹的果實（歐洲白蠟樹） 。

Five chitosan samples ( 3. 8 10 ^ 5, 7. 8 10 ^ 4, 4. 8 10 ^ 4, 1. 7 10 ^ 4, 2. 3 10 ^ 3 ) were used to investigate their activity in vitro against phytopathogenic fungi, which caused anthracnose on garden plants such as euonymus japonicus, ophiopogon japonics and magnolia grandiflora, and rot on fraxinus hupehensis

採用平板法研究了殼聚糖系列樣品對大葉黃楊炭疽病、沿階草炭疽病、廣玉蘭炭疽病和對節白蠟腐爛病等庭院植物病原真菌的體外抗菌性能。

The release of winged-seed from acer and fraxinus species, can be encouraged by shakers.

對于槭屬和q屬等種子有翅的樹種，可以用搖樹機搖落。

In order to make clear the regulation of the combustion and the heat - transport process of fire - retardant treated wood, the combustion of untreated, fire - retardant solution soaked, and fire - proof paint coated white pine ( pinus bungeana ) and northeast china ash ( fraxinus mandshurica ) wood as well as the rising process of temperature at different sites in wood were measured in this study, taking a multi - function fire - proof experiment oven to simulate the typical process of fire

摘要為了弄清楚阻燃處理木材的燃燒及其熱傳導規律，該研究採用多功能耐火實驗爐模擬典型火災的發生過程，測定了未處理、阻燃劑水溶液浸漬處理、塗刷防火塗料白皮松和水曲柳木材的燃燒及木材內不同位置的升溫過程。

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。

Spatial distribution pattern of tree species populations and interspecific association in fraxinus mandshurica and juglans mandshurica forest community

水胡林群落樹木種群空間分佈及種間關聯性

Advances and prospectives of fraxinus mandshurica rupr

水曲柳研究進展和展望

Study on the site conditions suitable for young plantation of fraxinus mandshurica

水曲柳幼林適生立地條件研究

Cytological investigation of somatic and zygotic embryogenesis of fraxinus mandshurica

水曲柳體細胞胚與合子胚發生的細胞學研究

The effects of light, agar and carbon sources on the growth of in vitro cultured root tips of fraxinus mandshurica were studied

摘要研究了光照有無、瓊脂添加與否和不同碳源對離體培養的水曲柳根尖生長的影響。

Trials of fraxinus chinensis with plastic - wrapped afforestation technique

白蠟纏膜造林試驗研究

The release of winged - seed from acer and fraxinus species, can be encouraged by shakers

對于槭屬和?屬等種子有翅的樹種，可以用搖樹機搖落。

Some photosynthetic characteristics of fraxinus mandshurica seedlings grown under different soil water potentials

不同土壤水勢條件下水曲柳幼苗的光合作用特徵

The results showed that the growth of root tips in liquid medium was better than that in agar - solidified medium and solid - liquid two phase medium, for that increasing agar concentrations in medium will reduce the root growth ; darkness was beneficial for fraxinus mandshurica root tip culture in vitro ; as the carbon sources, sucrose was better than glucose and maltose as the carbon sources, and 3 % sucrose was best for the root tip growth of fraxinus mandshurica

結果表明，不添加瓊脂的液體培養基對根尖的生長較添加瓊脂的固體培養基和固液培養基好，原因是增加瓊脂的量會抑制根的生長；暗培養比光培養更有利於水曲柳離體根尖的培養；蔗糖作為碳源的效果較果糖和麥芽糖好，其中以3 %的蔗糖對離體根尖的生長效果最好。