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mixed populations
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  混合种群
     Based on investigation data of 6 years from 1989~1994 on Ganjia High Mountain Grassland in Xiahe County,Gansu Province,the prediction models of the occurrence period and number of Chorthippus dubius (Zubovsky) and mixed populations were established.
     利用在夏河县甘加高山草原1989 ~1994 年共6 年的系统调查资料,分别建立了狭翅雏蝗以及蝗虫混合种群的发生期和发生量与气象因子之间的回归预测模型。
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     Iwao's law, Taylor's law and 5 kinds of gathering quotas were applied to analyze the distribution patterns of mixed populations of beet weevil larva, which belong to the genus Bothynoderus Schoenherr, in the field of the Hexi corridor, in Gansu Province. The results indicated that the distribution of the beet weevil larva population in field is aggregated.
     应用Iwao法、Taylor法和其他5种聚集度指标分析了甘肃河西地区甜菜象虫幼虫混合种群在田间的分布型,结果表明甜菜象虫幼虫在田间属聚集分布。
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     According to CE four species nymphs and adults, the grassland grasshoppers were divided three CE types, when mixed populations density were 11. 20 h. /m2, the gerbage fresh weigth were grazed 199. 57 kg/ha during an year.
     根据食量测定将本区草原蝗虫划分为3种食量类型,不同类型在不比例下其混合种群密度的为11.20头/m2时,一年取食牧草鲜重为199.37kg/ha
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     The spatial distribution pattern of mixed populations of white grubs was aggregated at the late growing stage of Paeonia Lactiflora in the field.
     蛴螬混合种群于白芍生长后期在田间呈聚集分布。
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     Capacity of rising temperature caused by mixed populations was higher than that by single populations.
     混合种群的增温能力高于单一种群;
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  混合群体
     populations (1 042 seeds of endosperm with single population and 300 seeds of endosperm with mixed populations from 170 trees of 12 populations) of Picea koraiensis were collected typically within its distribution from Changbai Mountains, its branches Zhangguangcai Mountains, Laoye Mount and Wada Mountains, to Xiaoxing'an Mountains and Daxing'an Mountains, with interspersed areas of internal Mogul grassland and Sikshote Mountains.
     在红皮云杉 (Piceakoraiensis)分布区内 ,选取了有代表性的 12个群体 (含 170个单株种子的 10 4 2粒胚乳和 30 0粒混合群体的胚乳 )进行遗传分化分析。
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     Using BSA method, a dominant multi-ovary line of common wheat (Triticum aestivum) was crossed with variety Xinong 1376(T. aestivum). From F2 segregation population, a multi-ovary and a single-ovary gene pools were established; via RAPD-PCR method, single-ovary and multi-ovary mixed populations were screened using 440 random primers.
     利用BSA法,以显性多子房小麦(Triticum aestivum)与普通小麦(T.aestivum)品种西农1376进行杂交,从F2分离世代建立多子房性状基因池和单子房基因池,采用RAPD-PCR方法,以440个随机引物筛选单、多子房的混合群体及其双亲。
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     Results: Three of the five animals had mixed populations of lung viruses,and over 50% of the clones from the 3 animals revealed F gene mutations associated with resistance to PZ.
     结果:在5只接受PZ预防或治疗的棉鼠中,3只棉鼠肺内病毒为含有逃逸株和原型株的混合群体; 来自上述3只棉鼠的F基因cDNA克隆中,超过50%显示与体外PZ逃逸株相同的F基因突变。
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  “mixed populations”译为未确定词的双语例句
     Computer Simulation of the Dynamics of Experimental Mixed Populations of Hyperomyzus lactucae Aphidius sonchi
     苦苣菜蚜—苦苣菜蚜茧蜂混合实验种群数量动态的计算机模拟
短句来源
     Group C were mixed populations(170 male and 132 female)aged 29.8(3-69)years old.
     平均年龄21.6(18-24)岁.组3:混合人群302名,男170女132;
短句来源
     INHIBTTING EFFECTS OF MOUTAN AND ITS POWDERS OR EXTRACT TO THE FORMATION OF MIXED POPULATIONS OF STEGOBIUM PANICEUM AND ORYZAEPHILUS SURINAMENSIS
     丹皮及其提取物对中药材害虫种群形成的抑制作用研究
短句来源
     Mixed populations of peanut white grubs display an aggregated pattern of distribution.
     花生蛴螬田间分布属于聚集分布。
短句来源
     The specific amplification of LmPHs revealed that seven out of eight recovered mixed populations employed the multi component phenol hydroxylase to degrade phenol.
     LmPHs扩增显示 7种回收菌群中均有以多亚基苯酚羟化酶为代谢途径的苯酚降解菌存在。
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  mixed populations
Nevertheless, there is some genetic exchange and unidirectional gene flow between the RGPs, especially in secondary (successive) habitats where mixed populations are observed.
      
The SCAR-PCR technique reliably determined species composition, detecting mixed populations of M.
      
The cereal cyst nematodeHeterodera latipons Franklin is widespread in the eastern Mediterranean area and often occurs in mixed populations withH.
      
Mixed populations of the three species (4.0%), but more commonly of M.
      
hispanus Roca >amp;amp; Arias, 1986 with which it often occurs in mixed populations.
      
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The present paper deals mainly with the fluctuations of the mixed population of 4cotton mirids, viz. Lygus lucorum Meyer-Dhr, Adelphocoris fasiaticollis Reuter, A. lineo-latus Goeze and A. suturalus Jak. Observations were made continuously in the cottonand alfalfa fields through-out the years 1954-1961 in Shensi. The relationships betweenthe mixed population and the populations of the four species were also compared. It is seen that the growth form of the mixed population of the cotton...

The present paper deals mainly with the fluctuations of the mixed population of 4cotton mirids, viz. Lygus lucorum Meyer-Dhr, Adelphocoris fasiaticollis Reuter, A. lineo-latus Goeze and A. suturalus Jak. Observations were made continuously in the cottonand alfalfa fields through-out the years 1954-1961 in Shensi. The relationships betweenthe mixed population and the populations of the four species were also compared. It is seen that the growth form of the mixed population of the cotton mirids may beinfluenced by the amounts and temporal distribution of rain-fall from June to August. Ac-cording to the position of the peak the population growth form may be divided intofour types: 1. Pre-peak type 3. Mid-peak type 2. Post-peak type 4. Bi-peak type On the basis of these different types of growth form, the temporal characteristicof damages in the growing season caused by the mirids could be clearly seen: Pre-peak type——damage mainly in the square period. Post-peak type——damage mainly in the boll period. Bi-peak type——damage in both the square and boll periods. Mid-peak type——slight damage in both the square and boll periods. The limiting factors for the fluctuations of the mixed population were also analyzed.The results showed that the population fluctuations in the square period were closelyrelated to both the amount of rain-fall in June and the basic populations in the alfalfafields in the early spring. But in the boll period the combined effect of temperatureand humidity played a more important role in checking the population of mirids. For convencience, three predictive formulae for the square and boll period have beensuggested in the following table:

本文以陕西关中棉区发生普遍,为害严重的绿盲爆(Lreu。l。ocr。m Mever-DQr)、首稻育馆(A人如加c。r订U。。。b拙。G。ez一、三点盲蝽(A.fasiaticollis Reuter)和中黑盲蝽(A.s。。tuturalus Jak.)四种盲蝽为对象,进行了数量变动的研究与分析。 文中依据生态特性的研究结果,结合8年的田间观察资料,对棉田内四种盲蝽混合种群与单种种群的消长曲线分别进行了分析与比较,根据分析结果,文中采用了盲蝽混合种群作为分析的对象,并提出棉田内盲蝽混合种群的消长曲线是受蕾铃期间降水量与降水期的影响,根据降水量与降水期的不同,其曲线变动可分为四个波动型,即前峰型、中峰型、后峰型与双峰型。由于峰型不同,即表示着该年的旱涝分布与棉株受害程度与阶段的不同,前峰型属前涝后旱型,亦即蕾期为害型:后峰型属前旱后涝型,亦即铃期为害型;双峰型属涝年型,亦即蕾铃两期为害型;而中峰型则属旱年型,亦即蕾铃两期受害均轻型。 文中依据棉株不同生长阶段中影响盲蝽种群数量变动的主导作用因素的分析结果,提出分析棉田盲蝽种群的变动应分为蕾期与铃期两阶段,由于棉株生长阶段不同,在这两阶段中影响盲蝽的主导作用因素亦...

本文以陕西关中棉区发生普遍,为害严重的绿盲爆(Lreu。l。ocr。m Mever-DQr)、首稻育馆(A人如加c。r订U。。。b拙。G。ez一、三点盲蝽(A.fasiaticollis Reuter)和中黑盲蝽(A.s。。tuturalus Jak.)四种盲蝽为对象,进行了数量变动的研究与分析。 文中依据生态特性的研究结果,结合8年的田间观察资料,对棉田内四种盲蝽混合种群与单种种群的消长曲线分别进行了分析与比较,根据分析结果,文中采用了盲蝽混合种群作为分析的对象,并提出棉田内盲蝽混合种群的消长曲线是受蕾铃期间降水量与降水期的影响,根据降水量与降水期的不同,其曲线变动可分为四个波动型,即前峰型、中峰型、后峰型与双峰型。由于峰型不同,即表示着该年的旱涝分布与棉株受害程度与阶段的不同,前峰型属前涝后旱型,亦即蕾期为害型:后峰型属前旱后涝型,亦即铃期为害型;双峰型属涝年型,亦即蕾铃两期为害型;而中峰型则属旱年型,亦即蕾铃两期受害均轻型。 文中依据棉株不同生长阶段中影响盲蝽种群数量变动的主导作用因素的分析结果,提出分析棉田盲蝽种群的变动应分为蕾期与铃期两阶段,由于棉株生长阶段不同,在这两阶段中影响盲蝽的主导作用因素亦不同,蕾期的虫口增长是受早春虫口基数与6月降水量两因素联合作用的结果,而铃期的虫口增长则系受温湿度组

In the present paper the relationships between some important ecological factors and the population size of rice leaf roller were studied. Several sub-models have been constructed , such as the sub-moel for evaluating the rice variety resistance to rice leaf roller,the sub-model of relationship between the tem.perature and the fecundity, the sub-model of relationship bet-ween the temperature and the hatching rate of eggs, the sub-model of the relationship between the mixed population of various species...

In the present paper the relationships between some important ecological factors and the population size of rice leaf roller were studied. Several sub-models have been constructed , such as the sub-moel for evaluating the rice variety resistance to rice leaf roller,the sub-model of relationship between the tem.perature and the fecundity, the sub-model of relationship bet-ween the temperature and the hatching rate of eggs, the sub-model of the relationship between the mixed population of various species of spiders and the population of the pest, and the sub-model of relationship between the density of Apanteles cypris Nixon and the survival rate of the 2nd-instar larva of the pest.Based on the Syear's average life table of 1976-1980 and the sub-models of the relationships between the ecological factors and the population dynamics of rice leaf rollar,two monitering models were developed:a) the model for monitoting the population size of the 4th-instar larva of the pest in the 2nd generation in Hailing island; b) the model for monitoring the egg density of the 3rd generation.The models were examined with the observed data of 1981, and the results showed that the models worked well under the actual conditions in Hailing island, These two monitoring models have been calibrated with the average life table of 1976-1981. The models are suited to input into the simple computer, such as TI Programmable 59 calculator, to monitor the population size of the pest.

本文在广东省阳江县海陵岛稻纵卷叶螟第二世代生命表组份分析的基础上,研究了影响种群数量的重要因子及关键因子与稻纵卷叶螟发生数量的关系,并建立了这些关系的亚模型,补充于1976—1980年平均生命表模型之中,得出了第二世代种群数量动态模型。该模型应用于自第二世代卵期预测当代四龄幼虫(暴食期)的数量,以及自第二世代卵期开始逐步预测第三世代卵量。经过1981年的调查数据检验,说明该模型具有一定的可靠性;说明了通过昆虫生命表的研究建立数量预测模型的可能性。本文进一步以1976—1981年平均生命表数据为基础,建立第二世代种群数量动态模型。该模型适应于输入简单的电子计算机内进行上述的预测以及进一步补充校正。

A new variety of cucumber ( Cucumis sativus L. var. xishuangbannanesis) which grew in Xishuangbannan autonomous region of Yunnan province was identified.Naturally, the Xishuangbannan cucumber is a mixed population with different fruit shape and skin colour.The fruit shape and flesh colour are similar to that of the Cucumis melo L. with the Characteristics of rec-tangular fruit shape, a big protruding navel and the orange flesh and pla-centa. The weight of single fruit is about 2-3 Kg, Containing large...

A new variety of cucumber ( Cucumis sativus L. var. xishuangbannanesis) which grew in Xishuangbannan autonomous region of Yunnan province was identified.Naturally, the Xishuangbannan cucumber is a mixed population with different fruit shape and skin colour.The fruit shape and flesh colour are similar to that of the Cucumis melo L. with the Characteristics of rec-tangular fruit shape, a big protruding navel and the orange flesh and pla-centa. The weight of single fruit is about 2-3 Kg, Containing large nu-mbers of seeds maximum exceeds 1,000 in some cases. For Confirming its position in taxonomy, three experiments were conducted:

西双版纳黄瓜是黄瓜(Cucumis sativus L.)中的一个新类型。具有方圆形、大脐、果肉橙色等甜瓜(Cucumis melo L.)的特征。但从西双版纳黄瓜的染色体数、与普通黄瓜杂交的可育性、一代杂种的表现和过氧化物酶同工酶酶谱等方面的观察鉴定,证明属于黄瓜。同时根据西双版纳黄瓜与普通黄瓜不同的性状,认为是黄瓜的一个变种,定名为(Cucumis sativus L.var. xishuangba-nnanesis Qi et Yuan)。

 
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