nutrient adj. 营养的,滋养的。 n. 营养物,营养品,养分,养料;营养剂。 nutrient broth 肉汁。 nutrient medium 培养基。
limitation n. 1.限制。 2.界限;极限;限度;局限性;限制因素。 3.【法律】(诉讼)时效,有效期限。 a limitation on imports 进口限制。 an arms limitation 军备限制。 Each man has his limitations. 人各有所不能。 know one's own limitations 有自知之明。 owing to the limitation of space 限于篇幅。
Methods : firstly , tetraselmis tetrethele had been cultured for ten days under stresses of nutrients limitation , light limitation , lower salinity and higher salinity , while normal condition was control 方法:将四列藻置于营养限制胁迫、光限制胁迫、低盐和高盐胁迫下培养10天,以正常条件作对照。
However , the arisen time of overcompensation was different under different stresses , and it appeared at initial - middle stage under the stresses of nutrients limitation and light limitation , while at middle - later stage under the stress of salinity for the cause of the lag effect of osmosis regulation . in addition , the overcompensation in microalgae was probably one internal cause of algae bloom 另外,营养限制胁迫和光限制胁迫下产生的超补偿作用主要是表现在培养过程的初中期,而对于盐胁迫下产生的超补偿作用,由于渗透调节过程的“滞后效应” ,因而其在培养过程的中后期表现得更明显。
Based on the judging methods and rules of nutrient limitation , it is concluded that phosphorus is not a limiting factor fur the phytoplankton growth in the changjiang estuary water area , and the conclusions of phosphorus limitation or nitrogen limitation drawn only by the ratio of nitrogen to phosphorus are imperfect 根据营养盐限制的判断方法和法则,在长江口及其附近海域,磷并不是浮游植物生长的限制因子,仅靠氮磷比值来得到磷限制或氮限制的结论是不完善的。