nutrient adj. 營養(yǎng)的,滋養(yǎng)的。 n. 營養(yǎng)物,營養(yǎng)品,養(yǎng)分,養(yǎng)料;營養(yǎng)劑。 nutrient broth 肉汁。 nutrient medium 培養(yǎng)基。
limitation n. 1.限制。 2.界限;極限;限度;局限性;限制因素。 3.【法律】(訴訟)時效,有效期限。 a limitation on imports 進(jìn)口限制。 an arms limitation 軍備限制。 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:將四列藻置于營養(yǎng)限制脅迫、光限制脅迫、低鹽和高鹽脅迫下培養(yǎng)10天,以正常條件作對照。
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,營養(yǎng)限制脅迫和光限制脅迫下產(chǎn)生的超補償作用主要是表現(xiàn)在培養(yǎng)過程的初中期,而對于鹽脅迫下產(chǎn)生的超補償作用,由于滲透調(diào)節(jié)過程的“滯后效應(yīng)” ,因而其在培養(yǎng)過程的中后期表現(xiàn)得更明顯。
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 根據(jù)營養(yǎng)鹽限制的判斷方法和法則,在長江口及其附近海域,磷并不是浮游植物生長的限制因子,僅靠氮磷比值來得到磷限制或氮限制的結(jié)論是不完善的。