排序方式： 共有5条查询结果，搜索用时 46 毫秒
1
1.
海带孢子体吸收磷酸盐的初步研究 总被引：1，自引：0，他引：1
对于陆地植物吸收磷酸盐的研究已有不少报道。WillyLin(1979)报道了玉米根对钾和磷酸盐的吸收情况。pedro Bravo-F(1981)研究了在不同温度和不同浓度下，玉米根吸收磷酸盐和钾的情况。D．J．Lathwell(1967)研究了温度对离体玉米根吸收正磷酸盐的影响。 相似文献
2.
INTRODUCTIONMarinemicroalgaeacquiretheirinorganiccarbonforphotosynthesisfromseawaterwhereinorganiccarbonmaybepresentasfreeCO2 ,H2 CO3andHCO-3 andCO2 -3 .TheproportionsofdifferentDICformsareprimarilyrelatedtopH ,andtotemperatureandsalinitytoalessextent.ThetotalDICisashighas2mmol Linseawa terbutthisismainlyintheformofHCO-3 .InnormalpHrangeof7.8-8.2inseawater,HCO-3 accountsfororethan 90 %ofthetotalDIC,whilefreeCO2 islessthan1 % .TheequilibriumconcentrationoffreeCO2 isonly1 2 μm… 相似文献
3.
对于陆地植物吸收磷酸盐的研究已有不少报道。Willy Lin(1979)报道了玉米根对钾和磷酸盐的吸收情况。pedro Bravo—F(1981)研究了在不同温度和不同浓度下,玉米根吸收磷酸盐和钾的情况。D.J.Lathwell(1967)研究了温度对离体玉米根吸收正磷酸盐的影响。藻类吸收磷的研究也有人作了不少工作。W.Herbertsenft(1981) 相似文献
4.
Experiments with Lamnaria japonica were conducted in Meidao Bay and Pier Bay,Qingdao,China,Nitrogen-starved plants were fertilized intermittently with 7.1 mM NH4-N solution for 1 hour at 3 day intervals, after which chlorophyll a, fucoxanthin, chlorophyll c and B-carotene contents were analyzed. Photosynthetic and growth rates of plants and nitrogen content of seawater were determined. Photosynthetic and growth rates of the nitrogen-enriched plants were higher than those of the controls, and their contents of chlorophyll a, fucoxanthin, chlorophyll c and B-carotene were 1.65,0.67,0.33 and 0.06 mg . dm-2 respectively, or 2.46,2.03,1.86 and 1.81 times those of the controls. The ratio of fiicoxanthin to chlorophyll a in nitrogen-enriched plants was lower than that of the controls. Normal growth rate of the plants (2 cm.day-1 in length)were reached when the chlorophyll a content exceeded 0.1 mg.g-1 fresh wt., indicating that chlorophyll a content can serve as an indicator of normal growth.Experimental resul 相似文献
5.
细基江蓠繁枝变型生长适宜环境条件的研究 总被引：12，自引：0，他引：12
于１９８５年４月－１９８６年３月对细基江蓠枝变型在广西池塘中的生长率作用年连续测定，研究几种主要环境因子对其生长的影响。结果表明，１．在广西地区池塘水温的年变化范围在１５－３２℃，藻体能周年生长；水温在２０－３０℃时生长较快；全年平均生长率为２．４％ ２．对生长率和光合作用速率的适宜盐度范围为１４－２７，以２１左右为最好。３．无机氮营养盐的浓度在４μｍｏｌ／Ｌ左右，即可维持较快的生长率。４．栽培深 相似文献
1