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            • In some xerophytes , such as cacti , most of the leaves are modified into spines , greatly reducing the leaf area for transpiration ; the photosynthetic function of the leaves is taken over by the green stems
            • Many researches show , the environmental adaptable process of the xerophytecan be divided into two different stages . in the first stage , seeds sprout and fini - sh the adaptation xerophytic process ; in the second stage , xerophyte grows in arid condition by using natural water
            • Weather or not the vegetation restoration and rebuilt can be achieved will largely depend on weather or not sprout can build up the mechanism to resist dry stress . this point of view has been pro - ved by plants living on the natural water . usually the xerophyte has particular ability to endure drought for long term
            • The fact that the xerop - hyte grows naturally in desert presents that the sprout of xerophyte has special adaptive ability to endure the first draught season in its life . it is the most essential factor for the sprout of the xerophyte going through the first hot summer to build up the xeromorphic structure and physiological function
              在水分條件漸減乃至干旱、炎熱的立地條件中,幼苗能否及時適應? ?旱生結構的迅速形成與生理功能的迅速完善,是決定旱生植物能否在荒漠氣候條件下繼續生長的至關重要的因素。
            • 4 the optimal water niche of m . h and m c are wetter than middle soil water content , belongs to mesophytes ; the optimal water niche of mosla scabra , on photosynthesis is more wetter than that of m . h and me , the optimal water niche between mesophytes and hygrophytes , and leaning to hygrophytes ; the photosynthetic water condition of m . d is arid environments , and its ecotype exits between mesophytes and xerophytes , and leaning to xerophytes . 5 m . h and m . s are locating between shade plants and sun plants , while m . c and m . d obviously belong to sun plants
              4 、杭州石薺?與華薺?光合的最適水分條件是中等偏濕,其水分生態類型應屬于中生植物;石薺?光合的最適水分條件比杭州石薺?與華薺?光合的最適水分條件要求更濕,其水分生態類型介于中生和濕生植物之間,更偏向濕生;小魚仙草光合作用的水分生態條件是干旱條件,其水分生態類型介于中生與旱生植物之間,更偏向旱生。
            • The paper made an ecological anatomy , a cultivation experiment on the lime - soil habtat and an analysis on the diurnal variation of photosynthetic an transpiration rate from three aspects of morphology , transplantation , physiology . the conclusion is that : ( 1 ) from the viewpoint of morphological anatomy , it has typical xerophyte structure such as strong root system , small leaf area , dense floss under the leaf surface , high stomatal density , the small opening degree , developed vessels and palisade tissues etc
              從形態學、栽培學和生理學三方面對迷迭香進行生態解剖、石灰土上的栽培實驗以及光合蒸騰速率日進程的分析,得出以下結論: ( 1 )在形態解剖上:迷迭香具有發達的根系,較小的葉面積,葉片下表面密被絨毛,氣孔密度大,開度小,厚的角質層和發育良好的木質部和柵欄組織等典型的旱生結構。
            • The ways of study are followed : insp - ecting and observing their living condition on the open fields ; cultivating sp - rout , examining physiological and biochemical changes in plants ; paraffin sec - tioning . the study results show : due to the species diversity , though the sproutsof xerophyte have several strategies to adapt to environmental drought in the long term evolution process , they have obtained same adapting mechanism to the short of water
            • The characteristics of biodiversity of yellow river delta are as follows : the vegetation structure is simplex and coverage is lower , which is characterized with obvious younger nature and abundant wetland ; the flora composition is simple , the plants usually could resist against salt and drought ; the xerophytes and meso - xerophytes are abundant , there are many mutual species with inner mongolia , which incarnated the biology corridor function of yellow river ; there are many animal species belong to national protected species , so the significance for biodiversity protection is great
            • It's difficult to see xerophyte in a sentence. 用xerophyte造句挺難的
            如何用xerophyte造句,用xerophyte造句,xerophyte in a sentence, 用xerophyte造句和xerophyte的例句由查查漢語詞典提供,版權所有違者必究。

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