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   早期落叶病 在 植物保护 分类中 的翻译结果: 查询用时:0.016秒
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早期落叶病
相关语句
  early defoliation
    The study of regularity of apple early defoliation disease and its control by fungicide
    苹果早期落叶病发病规律与药剂防治研究
短句来源
    The apple early defoliation disease was systematically investigated in WeiBei apple growing areas in 2001-2003.The kinds of this disease had been confirmed and there were apple alternaria leaf spot Altemaria mali Roberts,apple brown spot ( Marssonina coronarian (Ell.et Davis) Davis),and apple fruit blotch ( Phyllosticta solitaria ).
    2001~2003年分别对陕西渭北苹果产区主要发生的早期落叶病进行了系统调查,初步明确了苹果早期落叶病的发生种类,其中以苹果斑点落叶病(AltemariamaliRoberts)、苹果褐斑病(Marssoninacoronarian(Ell.EtDavis)Davis)和苹果圆斑病(Phyllostccasolitaria)发病最重,病叶率49.62%~10.36%,病情指数14.82~2.33;
短句来源
  “早期落叶病”译为未确定词的双语例句
    A survey on the occurrence of Mycosphaerella larici-leptolepis Ito, Sato, & Ota on Laricis spp. in North-East provinces
    东北及内蒙地区落叶松早期落叶病的调查
短句来源
    PRELIMINARY STUDIES ON THE DISPERSAL PATTERN OF ASCOSPORES OF MYCOSPHAERELLA LARICI. LEPTOLEPTIS AND THE EFFECTS OF FUNGICIDAL CONTROL
    落叶松早期落叶病子囊孢子扩散形式及药剂防治试验的初步研究
短句来源
    STUDY ON THE LOSS CAUSED BY LARCH LEAF-CAST, DISEASE FORECAST AND THE CONTROL TARGET
    落叶松早期落叶病(Mycosphaerella larici-leptolepis)的病害损失、预测预报及防治指标的研究
短句来源
    Comparison of Resistance to Apple Leaf Spots in Fuji and Qin Guan Apple
    秦冠、富士苹果早期落叶病抗性比较研究
短句来源
    Early and late frost, Dedrolimus superans, sawfly and needle cast of larch could reduce the quality and quantity of foods of larch casebearer and had indirect effects on its population density.
    早霜、晚霜、松毛虫、叶蜂及落叶松早期落叶病等都能直接影响鞘蛾食物的质量和数量,进而间接地使鞘蛾种群密度降低。
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  early defoliation
An undercompensatory growth response was observed in one experiment after seedlings were subjected to moderate levels of early defoliation.
      
A greater storage of resources in aboveground leaves during winter by males compared to females may explain the higher preference for male leaves and the higher male mortality following early defoliation.
      
For the three species studied, early defoliation had no significant effect on subsequent growth.
      
The main diagnostic symptom was ring spot on the leaves and calyxes of young fruits; in severe cases, lesions developed on more than half of the area of the leaf, resulting in early defoliation.
      
Yield loss the following spring is a result of reduced crown vigor caused by the early defoliation.
      


The needle-cast disease of Laricis leptolepis caused by the fungus Mycosphaerella laricileptolepis Ito, Sato, and Ota, is widely distributed in North-East provinces. The primary infection of the pathogen is mainly the ascospores from the fallen leaves on the ground during the spring. In order to determine the distance of its vertical and horizontal discharge of the spores from the perithecia, a simple spore-trapping method was designed by exposing the glass slides in six directions, placed in three different...

The needle-cast disease of Laricis leptolepis caused by the fungus Mycosphaerella laricileptolepis Ito, Sato, and Ota, is widely distributed in North-East provinces. The primary infection of the pathogen is mainly the ascospores from the fallen leaves on the ground during the spring. In order to determine the distance of its vertical and horizontal discharge of the spores from the perithecia, a simple spore-trapping method was designed by exposing the glass slides in six directions, placed in three different locations and six different heights. Preliminary data showed that the ascospores could reach a height of 55 meters and a distance of 1600 meters along the wind direction. Among the 20 fungicides tested in the field on both young and large trees, 0.5°Bê limesulphur spray employed three times at 2-weeks interval gave a very good control. A ground spray on fallen leaves by six different fungicides did not give satisfactory results although 3°Bê lime-sulphur and lime (20 grams per tree) appeared to be better than dinitro-phosphatemethyl-phenol.

落叶松早期落叶病子囊孢子在空中的扩散,在长春地区,以7月份为盛期。林外水平距1600米及垂直高55米处均可捕捉到不低于林内孢子的数量,其方向符合夏季主风方向。噴药防治的效果,无論成林或幼林,均以0.5度石灰硫黄合剂最好,尤其噴药3次的更佳。地面噴药抑止产生子囊壳,以3度石灰硫黄合剂及每株20克石灰比二硝基磷甲酚效果好。

The increasing of the population of C. dahurica was controlled by comprehensive factors of wind, foods, predators and the density of its self. Spring wind caused 27% of larvae on crown to fall down. Early and late frost, Dedrolimus superans, sawfly and needle cast of larch could reduce the quality and quantity of foods of larch casebearer and had indirect effects on its population density. Birds, ants and spites were the main predators or C. dahurica and Ptermalidae, Eulophidae, Ichneumonidae and Braconidae...

The increasing of the population of C. dahurica was controlled by comprehensive factors of wind, foods, predators and the density of its self. Spring wind caused 27% of larvae on crown to fall down. Early and late frost, Dedrolimus superans, sawfly and needle cast of larch could reduce the quality and quantity of foods of larch casebearer and had indirect effects on its population density. Birds, ants and spites were the main predators or C. dahurica and Ptermalidae, Eulophidae, Ichneumonidae and Braconidae etc. were parasitic predators. Self-adjustment of population caused by self-population density was an important factor to promote evolution and development of the population, but it only occurcd at high density.

鞘蛾种群数量不可能无限制增长,其原因是多方面因素综合作用的结果。风、食物、天敌及鞘蛾的自身密度等对鞘蛾的数量增长都有明显的抑制作用。春风能使树冠上27%左右的鞘蛾幼虫落地;早霜、晚霜、松毛虫、叶蜂及落叶松早期落叶病等都能直接影响鞘蛾食物的质量和数量,进而间接地使鞘蛾种群密度降低。捕食鞘蛾的天敌主要有鸟类、蚂蚁和蜘蛛;寄生性天敌多属于金小蜂科(Pteromalidae)、姬小蜂科(Eulophidae)、姬蜂科(Ichneumonidae)及茧蜂科(Braconidae)等。由鞘蛾自身密度所引起的自我调节是促使种群进化发展的重要因素之一,但是,这种因素的作用只有在密度大的时候方能显现出来。

Compound Fungicide(CF)was made from selected fungicides by means of poison testing

复配杀菌剂是各种杀菌剂经室内药效测定筛选后,与苹果树生长必需营养元素复配而成。室内外药效测定结果表明,复配杀菌剂较常规杀菌剂药效提高,防病谱拓宽,且可促进叶、果生长、减少果园喷药次数。经在66.7公顷果园上应用试验,防病增产效果显著,对苹果早期落叶病和烂果病相对防效分别达65.1%~93.1%和83.9%~98.9%;百叶鲜重和百果鲜重分别增长18.7%~24.4%和9.73%~29.6%。

 
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