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yield make-up
相关语句
  产量构成
     Several economical characters, i.e. the yield make-up and product qualities,of both male and female plants of Asparagus officinalis L. were analysed.
     本文对石刁柏雌雄株产量构成及产品品质等经济性状进行了分析。
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  相似匹配句对
     and the yield raised.
     并有一定的防虫增产效果。
     Make Friends
     交个朋友吧!
短句来源
     make decision;
     协助领导落实决策;
短句来源
     How to improve increasing yield potential and make a breakthrough?
     如何在现有基础上提高品种的增产潜力并改进其品质,以取得突破性进展?
短句来源
     Its yield is higher by c.
     使用C.
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Among 31 clones of Cunninghamia lanceolata in two seed orchards, about 20% of clones are high-yielding, its yield making up approximately 30% of the total; mild-yielding clones are a little more than 20%, its yield accounting for 17%. The generalized heritability of cone-yield hw2=0.66, on the average. There are differences in male-female ratio, structure of female inflorescence, cone volume, density 癴 branching and surface area of crown among the clones. In general, the plant with...

Among 31 clones of Cunninghamia lanceolata in two seed orchards, about 20% of clones are high-yielding, its yield making up approximately 30% of the total; mild-yielding clones are a little more than 20%, its yield accounting for 17%. The generalized heritability of cone-yield hw2=0.66, on the average. There are differences in male-female ratio, structure of female inflorescence, cone volume, density 癴 branching and surface area of crown among the clones. In general, the plant with "more female characters", clustering stobiles, big cones and large and dense crowns is high-yielding. According to the data of 72 clones, 21% clones have big seeds; 47% are of middle seeds and 32% are of small seeds, 24% clones are imbued with high germination pergentage; 57% with middle's and 19% with low's. The clones with big seeds has higher seed germination, percentage than others; but the seed germination energy has a tendency the otherway.

在观察的31个无性系中丰产的约占20%,产量约占总产30%;中等的占60%弱,产量占54%;低产的占20%强,产量约占17%。结实的广义遗传力hw~2平均0.66。不同无性系在雌雄花比、雌花序结构、球果大小和分枝稠密度等方面存在差异。一般植株“偏雌性”、聚生雌花序占优势,球果大、树冠表面积大而分枝稠密的无性系结实量高;反之,“偏雄性”、单生雌花序为主、球果小、树冠表面积小而分枝稀疏的无性系结实量低。据72个无性系的分析,大粒种子无性系约占21%,中粒的约占47%,小粒的占32%;高发芽率无性系占23.6%,中发芽率的占57%,低发芽率的占19.4%。大粒种子无性系的发芽卒往往高于中、小粒种子无性系;而发芽势有相反趋势。

Grass biological regenerating characteristics of 4 species was studied in the aspects of regenerating mode(RM.), regenerating rate(RR.), regenerating intension(RI) and regenerating developmental rhythm. The RM. of Serphidium transillense in spring is mainly that the short and long nutritive twig damaged by utilization continuous to grow and the bud at root collar developed to new twig,regeneration of productive twig is effected obviously by the Period and the frenquency of cutting. While in autumn,there in only...

Grass biological regenerating characteristics of 4 species was studied in the aspects of regenerating mode(RM.), regenerating rate(RR.), regenerating intension(RI) and regenerating developmental rhythm. The RM. of Serphidium transillense in spring is mainly that the short and long nutritive twig damaged by utilization continuous to grow and the bud at root collar developed to new twig,regeneration of productive twig is effected obviously by the Period and the frenquency of cutting. While in autumn,there in only one mode which is the bud on the top of nutritive twig developed to new leaf(not new branch). To sum up,this grass generated weakly so that its average RR is only 1. 9cm/10 days and its regrowth yield make up 77% of the total yield. The RM of Carex turkestanica in spring is mainly that the bud near ground in the inner round of plant developed to new leaf and the leaf without being damaged continuous to grow. The leaf which had been cut grew weakly. The grass asexually regenerated with root—stem is belong to the type of e arly development, its regenerating capability with regrowth yield of 88% of total yield is stronger than that of S. transillence. There are three types of RM which in spring is similar to that of in autumn for Festuca ovina: the bud at tillering node developed to new leaf, the leaf without damaged continuous to grow,Its average RR is 2.0cm/10days,the RR is strong in spring,weaken and stable in autumn and paused in summer. And its total regrowth biomass take 87% of the gross. The RM of Stipa capillata,as xeric crowded rosette grass.is similar to that of F. ovina. It turn green late in spring and come in dormant little in summer. Hot is less harmful to it,so its regeneration keep better in autumn. Its RR is the fastest anmong the four grass,and its regrowth yield take up 88% of the total. The growth of reproduction twig of them is the effected obviously by whatever mode of utilization. The regenerating capability of the 4 species in order is S. capillata , F. Ovina, C. turkestanica, S. transillense.

从牧草的再生方式、再生速度、再生强度和再生草生育期规律研究了四种优势牧草再生生物学特性。伊犁绢蒿(Seriphidium transililense)春季再生主要由被剪割后的短、长营养枝继续生长和利用后受到刺激的根颈部位上的芽长成新的营养枝,利用后的长营养枝也可发育为生殖枝,但受利用时期与次数的影响较大;秋季主要靠营养枝的顶芽长成新叶(而不长成新枝)再生。总的来看,其再生较弱,与一次利用比,多次利用后,平均再生速度明显下降,再生草总量占总产草量的77%。短柱苔草(Carex turkestanica)春季主要以株丛内轮近地表处的芽长成新叶和未被利用破坏的叶子继续生长的方式再生,利用后残留的叶片也可继续生长,但速度较慢,秋季则只有最内轮的芽萌生成很小的叶片一种再生方式。其再生能力高于伊犁绢蒿,再生草总量占总产量的88%。羊茅(Festuca ovina)的再生方式在春秋两季相差不大,均以三种方式再生:即分蘖节上的新芽长成新叶;顶端未经利用的叶片继续生长;顶端被利用后残留叶片继续生长。多次利用后,平均再生速度为2.0 cm/10天,春季再_生力较强,秋季则显微弱,夏季休眠期没有再生。再生草总量占总产量的87%。针...

从牧草的再生方式、再生速度、再生强度和再生草生育期规律研究了四种优势牧草再生生物学特性。伊犁绢蒿(Seriphidium transililense)春季再生主要由被剪割后的短、长营养枝继续生长和利用后受到刺激的根颈部位上的芽长成新的营养枝,利用后的长营养枝也可发育为生殖枝,但受利用时期与次数的影响较大;秋季主要靠营养枝的顶芽长成新叶(而不长成新枝)再生。总的来看,其再生较弱,与一次利用比,多次利用后,平均再生速度明显下降,再生草总量占总产草量的77%。短柱苔草(Carex turkestanica)春季主要以株丛内轮近地表处的芽长成新叶和未被利用破坏的叶子继续生长的方式再生,利用后残留的叶片也可继续生长,但速度较慢,秋季则只有最内轮的芽萌生成很小的叶片一种再生方式。其再生能力高于伊犁绢蒿,再生草总量占总产量的88%。羊茅(Festuca ovina)的再生方式在春秋两季相差不大,均以三种方式再生:即分蘖节上的新芽长成新叶;顶端未经利用的叶片继续生长;顶端被利用后残留叶片继续生长。多次利用后,平均再生速度为2.0 cm/10天,春季再_生力较强,秋季则显微弱,夏季休眠期没有再生。再生草总量占总产量的87%。针茅(Stipa capillala)再生方式总体上与羊茅基本相同。春季返青再生较晚,夏季休眠现象表现较弱,炎热对新叶的危害不大,秋季新叶仍有一定的再生能力。其再生速度是四种牧草中最快的类型。再生草总量也可占总产量的88%。这四种牧草一年最多可利用五次,春季四次,秋季一次,春季利用对生殖枝的生长都有一定的影响。从再生速度与再生强度两方面比较,它们再生能力的强弱顺序为针茅、羊茅、短柱苔草、伊犁绢蒿。

This essay compares 4 different cover forme and obtained film house is the most suitable in spring of Beijing. The temperature varies is fit to Photosyn thesis accumulate of assimilates product and yield make up. Becauce temperature is exceed 34℃ in greenhouse,so plant appeared spindling, economic yield was low.

本试验通过4种不同的覆盖方式对莴苣的生产进行了比较。得出春季生产以大棚栽培方式最为适宜,其温度变化尤其是昼夜大温差适于生菜的光合作用及同化物的运输、积累及产量形成,地上部鲜重中有98%形成了产量;根系发育好,有利于地上部对水分及营养物质的吸收和利用;叶片的同化效率高,每枚叶片对产量的贡献较大,进而使单株产量较高,品质好;结球提前,成熟期早。温室栽培温度过高,使生菜出现徒长,经济产量低;露地及单层膜覆盖栽培,温度低,不适于生菜的生长,生物产量及经济产量皆低,没有生产意义。

 
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