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有机碎屑     
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  organic detritus
     The sizes of the particulate organic detritus vary greatly, from 5.3 μm to 95.0 μm in length, with the average 46.08±27.52 μm.
     有机碎屑颗粒大小悬殊,其长径5.3~95.0μm,平均46.08±27.52μm。
短句来源
     In the model, 6 state variables (DIN, PO4-P, phytoplankton, scallop, organic detritus, and dissolved organic nutrients) were included.
     涉及溶解无机氮(DIN)、磷酸盐(PO_(4-)P)、浮游植物、贝类、有机碎屑和溶解有机态营养盐6个状态变量。
短句来源
     Surface silt clay of intertidal mudflat in Fulin Bay of Fujian province contains plenty of particulate organic detritus and silt grain.
     福建省福宁湾潮间带滩涂表层粉砂质粘土海泥中含有丰富的颗粒有机碎屑和粉砂颗粒。
短句来源
     5 to 7 days’ larve after hatching larvae mostly lived on copepod nauplii, copepodites and trochophore of Polychaeta in water of the earthen ponds, apart from feeding on particulate organic detritus.
     孵化后5~7日龄仔鱼基本上依靠摄食土池水体中的桡足类无节幼体、桡足幼体和多毛类担轮幼体,但还摄食少量的颗粒有机碎屑
短句来源
     Non-selected deposit feeders (feeding type 1B) were double in the central part of the Bohai Sea and five times as much as ten years ago in Laizhou Bay, indicating a significant increase in sedimentary organic detritus.
     渤海中部的非选择性沉积食性者 (1B型 )增加了 1倍 ,莱洲湾则增加了 5倍 ,表明该海域有机碎屑沉降量的显著增加 .
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  organic debris
     1、 Simulative Experiment in Laboratory(1) The results indicated: the the Xenocypri Davidi Bleeker had inhibitory effect on alga and can improve the transparency of water by ingesting a great deal of organic suspensoid conten when the biomass released was about 40g/m3. At this point, the removal of organic debris is 134mg/g ? d, and the removal rate of alga can reach 32.9%.
     (1) 试验结果表明,当放养密度为40g/m~3左右时,黄尾密鲴对藻类有较好的抑制作用,藻类去除率为32.9%,同时大量摄食有机碎屑,提高水体的透明度,经计算每克黄尾密鲴有机碎屑去除率为134mg/g·d。
短句来源
     The optimum temperature for its growth is from 20 to 28℃, salinity 5 to 20, pH 7. 2 to 8. 2. The animal feeds mainly on diatoms and organic debris. It grows fast before the age of 3. The maximum size collected until now had a shell of 9. 1cm length, 7. 8cm height and 5.1cm width. The animal belongs to gonochorism.
     红树蚬分布于热带-亚热带海区,生活在咸淡水交汇的河口和潮间带,生长最适的水温20—28℃,盐度5—20,海水pH7.2─8.2,底质为软泥、泥砂或砂泥,栖息深度约10cm,以底栖硅藻和有机碎屑为食,繁殖期为5—9月。
短句来源
  organic-detritus
     PHYTOPLANKTON AND ORGANIC-DETRITUS IN HIGH-OUTPUT FISH PONDS WITH BLACK CARP AS THE MAJOR CULTURED SPECIES
     主养青鱼高产池塘的浮游植物和有机碎屑
短句来源
  organic detrital
     A PRELIMINARY REPORT ON THE QUANTIFICATION OF THE SEDIMENTING ORGANIC DETRITAL CARBON IN DONGHU LAKE, WUHAN
     武汉东湖水柱沉降物有机碎屑碳测定初报
短句来源
     SEDIMENTATION RATES OF PARTICULATE ORGANIC DETRITAL CARBON, NITROGEN AND PHOSPHORUS IN DONGHU LAKE, WUHAN
     武汉东湖颗粒有机碎屑碳、氮、磷的沉降速率
短句来源
     Organic detrital carbon content was calculated from the differences between total particulate organic carbon and plankton carbon.
     把两者换算成有机碳量,然后从总颗粒有机碳量与浮游生物活体碳量之差,求得颗粒有机碎屑碳量。
短句来源
     Paniculate organic detrital carbon generally accounts for 50% of the total seston organic carbon, and 61-104% of the plankton carbon. Particulate organic detrital carbon is about 2 to 6 times that of phytoplankton carbon and plays :a very important role in the trophic structure of the seston.
     颗粒有机碎屑碳一般占浮游物总颗粒有机碳的50%,占浮游生物活体碳的61%—104%。
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      organic detritus
    Microorganisms and organic detritus served as intermediate collectors of gold delivered with the continental runoff from provenances of the East European Platform.
          
    The isotope composition of the carbon in dissolved carbonates formed by OM mineralization is distinct from the composition of plankton and organic detritus, being enriched in 13C by 4-7‰.
          
    Organic detritus and soil erosion are the main contributions to POC in the turbidity maximum, especially in the flood season.
          
    The POC mean of the whole lake was 5.01 mg/L due to the large amount of organic detritus of both allochthonous and autochthonous origin.
          
    Organic detritus of the Cochin Backwater (India) is largely composed of fine silt and sand particles around which organic matter adheres and forms aggregates.
          
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      organic debris
    The discrete succession concept emphasizes the existence of morphologically and biochemically distinguishable stages (a fraction cascade) of transforming the organic debris into humus.
          
    According to the biochemical concept, the organic debris transformation is represented as the mineralization of individual organic substances with different rates, more often without taking into account the influence of humus formation.
          
    The testing of these concepts led to the conclusion that the discrete succession and biochemical concepts should be integrated for the elaboration of the theoretical basis for assessing the rate of organic debris transformation in the soil.
          
    The undetached peritrophic membrane of the mysis shrimp larva (Solenocera atlantidis) provides a substratum on which microbes, organic debris and planktonic organisms accumulate.
          
    The remaining items consisted of molluscs, polychaetes, ophiuroids, plant material, sand, and unidentified organic debris.
          
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      其他


    Nauplius of the brine shrimp (Artemia salina) has been used extensively as a live food for rearing larvae of marine fishes and prawns. The brine shrimp can be fed on a variety of live unicellular algae. 1. A morphological anatomy of the brine shrimp was described in detail. 2. The reproduction, growth and individual development of the brine shrimp were detailed. 3. Hatching conditions of the resting eggs of the brine shrimp were discussed.

    本文利用我国北方塘沽盐场产的卤虫(Artemia salina)休眠卵作为孵化培养的试验材料,对卤虫的形态进行解剖观察并作详细叙述。卤虫以单细胞藻及有机碎屑为饵。一生中经过无节幼虫期、后无节幼虫期、拟成虫期和成虫期的变态过程。在这一过程中要经过多次蜕皮,每蜕皮一次,身体就长大一次。雌雄虫的形态区别主要在于第二触角和生殖器官。雄虫一般极为少见。雌虫产两种类型卵子:休眠卵和非休眠卵。后者为孤雌生殖。卤虫的生长和性成熟与其水温等有关系。水温高,生长成熟都比较快。水温还和休眠卵的孵化速度有关。平均水温20.8℃时,经46小时开始孵化;25℃经24小时开始孵化;29.5℃经12小时开始孵化。孵化水的波美氏度(卤度)以4—5度最为合适。在缺乏光照时,孵化率大为下降。卤虫无节幼虫是世界海产鱼、虾幼体的著名活饵料。因此,对其孵化、培养条件的进一步探讨是很有必要的。

    This paper embodies the results of hydrochemical survey and the estimations ofphytoplankton production in eight high-yield fish ponds of Helie commume Wuxi fromMay to August 1977. Three ponds of Wuli Hu fish farm are also studied for compa-rison. The high-yield ponds have moderate main ions in content, with a constant pHvalue. The effective nitrogen of the water averaged 1.24mg/l, among which NH_4-N61%, NO_2-N 16% and NO_3-N 24%. The soluble reactive phosphorus is 0.028mg/l.COD_(Mn) is 13.3mg/l. Owing to the...

    This paper embodies the results of hydrochemical survey and the estimations ofphytoplankton production in eight high-yield fish ponds of Helie commume Wuxi fromMay to August 1977. Three ponds of Wuli Hu fish farm are also studied for compa-rison. The high-yield ponds have moderate main ions in content, with a constant pHvalue. The effective nitrogen of the water averaged 1.24mg/l, among which NH_4-N61%, NO_2-N 16% and NO_3-N 24%. The soluble reactive phosphorus is 0.028mg/l.COD_(Mn) is 13.3mg/l. Owing to the high N/P value (61-139), the phosphorus shouldbe the limiting factor of the promary productivity. Based upon a rough calculation, it shows that the particulate organic matter isalmost equal to the dissolved organic matter and detritus constitutes 2/3-4/5 theparticulate organic matter. The compensation layer of the pond water lies on 77-80cm, it is 2. 4 times to theSecch transparency. The gross production of phytoplankton of the water column averaged 9.41-10.09g.O_2/M~2 per day; which is usually less than the respiration of the pond water.

    本文总结了1977年5—8月对无锡河埒口高产池塘水化学研究的成果。该地区高产池主要离子含量适中,pH稳定。有效氮含量平均1.38毫克/升,其中铵氮占61%,亚硝酸氮占14%,硝酸氮占 25%。溶解活性磷(P_2O_5)平均为 0.028毫克/升。N/P 为 61—139。COD_(Mn)为 13.3毫克/升。磷是初级生产力的限制因素。 经初步分析表明:池水中溶解有机物与悬浮有机物约各占一半,而有机碎屑占有机悬浮物的 2/3到 4/5。平均补偿深度 77—80厘米,为平均透明度的 2.4倍。5—8月间平均水柱日初级毛生产量为9.41—10.09克氧/米~2·日。池水氧气的消耗,池鱼约占20%,“水呼吸”约占70%,底质约占 10%。氧气来源约 60%靠光合作用,40%靠空气溶解。

    This paper reports the results of investigation of hydrochemical and primary productivity of the high yield adult fishpouds and the fingerling ponds from May to August in the west suburb of Har Bin city, Heilony jiang province. The high yield ponds have moderate main ions in content, with a constant pH value, The total nitrogen of the fishpond water averages 3.41mg/L. The effective nitrogen is 0.311 mg/L on an average, amoug which NH4+-N 817%, NO3--N 9.6% aad NO2-N 8.7% The total phosphorus is 0.845 mg/L on...

    This paper reports the results of investigation of hydrochemical and primary productivity of the high yield adult fishpouds and the fingerling ponds from May to August in the west suburb of Har Bin city, Heilony jiang province. The high yield ponds have moderate main ions in content, with a constant pH value, The total nitrogen of the fishpond water averages 3.41mg/L. The effective nitrogen is 0.311 mg/L on an average, amoug which NH4+-N 817%, NO3--N 9.6% aad NO2-N 8.7% The total phosphorus is 0.845 mg/L on an average, among which, the soluble active phosphorus averages 0.223mg/L. T. N/T.P is 4.03 While nitrogen compare with phosphorus, is a Little lower.Based upon a rough calculation, it shows that the CODCr of mixed fishpona water is 79.74 mg/L on an average. The ratio of dissolved organic matter and particle organic matter is 1:1.7, ana detritus constitues about 4/5 of the particle organic matter. The depth of the averaged compensation of the adult fishponds (Honggi) is 44 cm,it is 1.9 times to the Secch transparency. The averaged compensation depth of the fingerling ponds is 30.5 cm, it is 1.5 times to the Seceh transparency.The gross production of phytoplanktonof the Honggi pond water column averages 9.23g O2/M2 perday from May to August, and the fingerling ponds is 13.26g O2/M2 pcr day between July and Angust.Low transparency and shallpw photosynchesis layer are main factors which effect the promary productivity.The ways which can raise the fish yield are probably to add nitrogerpus fertilizer and to reduce the quantity of the artificiau feed.

    本文报导了1984年5~8月对黑龙江省哈尔滨市西郊高产成鱼池和鱼种池的水化学和初级生产力调查的结果。该地区高产池主要离子含量适中,pH稳定。总氮平均含量为3.41毫克/升,有效氮平均含量为0.311毫克/升,其中铵态氮占81.7%,硝酸态氮占9.6%,亚硝酸态氮占8.7%。总磷平均含量为0.845毫克/升,其中溶解活性磷(P_2O_5)平均为0.223毫克/升。总N/总P为4.03。氮、磷相比,氮素偏低。 经初步分析表明:池水原水平均CODcr为79.74毫克/升。溶解有机物与悬浮有机物比值约为1:1.7,有机碎屑约占有机悬浮物的4/5。成鱼池(红旗池)的平均补偿深度为44厘米,为透明度的1.9倍。鱼种池的平均补偿深度为30.5厘米,为透明度的1.5倍。5~8月问红旗池平均初级毛生产量为9.23克氧/米~2日。7~8月闻鱼种池平均初级毛生产量为13.26克氧米~2日。透明度太低,光合作用水层太浅可能是影响初级生产力的主要因素。增施氮肥,适当减少人工饲料的投喂量,可能是提高鱼产量的措施之一。

     
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