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peach trees
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  桃树
     Effect of CO_2 enrichment on respiration and photorespiration of peach trees
     CO_2施肥对桃树暗呼吸和光呼吸的影响
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     Benificial Effects of Paclobutrazol(pp333) on Fruiting Peach Trees
     多效唑(PP_(333))对结果桃树的效应
短句来源
     Effect and Regulating Techniques of CO_2 Enrichment on Peach Trees in Greenhouse
     设施桃树CO_2施肥效应及控施技术研究
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     There was significantly negative correlation between K and Fe, which K~+concentration in leaves increased when applied potassium feitilizer to the peach trees, while Fe content decreased in leaves, as a result K/Ca and K/Fe ratios significantly increased.
     当桃树施用钾肥时,叶子中K~+浓度增加而Fe减少,使K/Ca和K/Fe比显著增大。
短句来源
     THE DYNAMIC CHANGE OF COMPONENT FACTORS OF HIGH YIELD ON PEACH TREES
     桃树高产栽培中产量构成因素的动态变化
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     The results showed that the percentage of grafting success was 92.5%~97.5% to pomelo trees, 80%,95%~97.5%and 97.5% to loquat,sweet cherry and peach trees ,respectively.
     一年生接穗 3 7.5% ,甜樱 95%~ 97.5% ,97.5%。
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     The diurnal changes of photosynthetic rate of the peach trees leaves in the green house reach the Pmax at 10: 00.The second Pmax is at 14: 00,The value of photosynthetic rate is lower, the photosynthesis between 11:00~12:00 also reduced.
     设施叶片净光合速率呈双峰型日变化曲线,上午10:00左右净光合速率达到最大值,下午14:00出现次峰值,11:00~12:00净光合速率有所下降。
短句来源
     Based on the protected culture practice of peach trees in north China ,the research had been carried out in the demonstration of college of horticultural science and engineering of Agricultural University with two-year-old“Chunjie”peach( Prunus persica L. cv. chunjie)/“Dongxuemitao”(Prunus persica (L.)
     本研究立足我国设施果树生产实际,以二年生春捷(Prunus persica L. cv. chunjie)/青州冬雪蜜(Prunus persica (L.)
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     The dosages from 30 000 IJ/mL to 50 000 IJ/mI, of MK, A24 and Beijing strains (Steinernema carpocapsae) were more effective to control RNL on both apricot and peach trees.
     30000~50000条/ml,剂量的MK,A24和Beijing3个品系线虫对、杏树内的红颈天牛具有较高的侵染力;
短句来源
     ACCUMULATION LEVEL OF 42 KINDS OF CHEMICAL ELEMENTS IN LEAF TISSUE OF PEACH TREES
     42种化学元素在树叶组织内的积累水平
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  “peach trees”译为未确定词的双语例句
     Based on the greenhouse cultural practice of peach trees in north China ,the research had been carried out in the demonstration garden of horticulturalscience and engineering college of Shandong Agricultural University andsome dominant areas of protective peach production in Shandong provincewith Shuguang nectarine ( Prunus persica var. nectarine Maxim. cv.Shuguang), Zaohongzhu nectarine(Prunus persica var. nectarina Maxim. cv.Zaohongzhu), Chunjie peach[Prunus persica (L.)
     本研究立足我国设施果树生产实际,以设施油桃曙光(Prunus persicavar. nectarine Maxim.cv.Shuguang)、早红珠(Prunus persica var. nectarinaMaxim.cv.Zaohongzhu)和春捷[Prunus persica(L.)
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     All the soil applications from 0.125g/m~2 to 1.0g/m~2 and foliar sprays above 500ppm×2 intensively inhibited the vegetative growth of peach trees, reducing the mean length of the extension shoots, the growth of the trunk cross sectional area, the number and the average length of the secondary flushes, and thus cancel the hard work of summer prunning.
     土施0.125~1.0g/m~2,叶面喷布500ppm×2以上的浓度都可有效地抑制植株营养生长。 它降低了新梢生长长度,抑制了副梢的发生和生长,以及干周的增长。
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     The results showed that the grape bud dormancy could be broken efficiently by CaCN 2 treatment ,time of bud germination advanced6~17d and the germination rate raised but it had no effects on peach trees.
     结果表明:CaCN2打破葡萄的休眠效果稳定,可使萌芽提早6~17d,并提高萌芽率,其破眠效果随需冷量的增加而显著;
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     Pollens of Zhouxingshantao peach trees,apricot cultivar Katy and plum cultivar Friar were irradiated by different doses of()~(60)Co γ-rays and ultraviolet to study the radiation effect on the pollen germination and distant hybridization settings.
     本文研究了不同剂量的60Coγ射线和紫外线辐照对帚型山桃、凯特杏、黑宝石李3种果树花粉后其发芽率及远缘杂交坐果率的影响。
短句来源
     EFFECT OF PP333 ON THE GROWTH AND HARDINESS OF YOUNG PEACH TREES
     PP_(333)对桃幼树生长及抗寒性的影响
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  peach trees
Disruption was greatest when the pheromone was evaporated from the tops of the peach trees; also, pheromone traps placed in the tree tops captured significantly more males than did traps placed lower in the trees.
      
The aim of the present work was to evaluate the effects of regulated deficit irrigation (RDI) applied in the post-harvest stage of peach trees.
      
Fe enriched biosolids as fertilizers for orange and peach trees grown in field conditions
      
Results suggest that the nitrogen taken up 'late' in the season is preferentially stored in roots and used by peach trees to sustain new growth the following spring.
      
Iron deficiency in peach trees: effects on leaf chlorophyll and nutrient concentrations in flowers and leaves
      
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The peach leaf hopper, Erythroneura sp., is one of the important insect pests of thepeach tree in Kiangsu Province. There were four overlapping generations a year. Theoverwintering adults became active in the middle of March, and migrated immediately tothe peach trees as soon as the young leaves sprouted out. They could not develop on theleaves of broad bean, cabbage and radish. The appearance of adult stage of each generation was as follows:The overwintering adults hid among several evergreen trees...

The peach leaf hopper, Erythroneura sp., is one of the important insect pests of thepeach tree in Kiangsu Province. There were four overlapping generations a year. Theoverwintering adults became active in the middle of March, and migrated immediately tothe peach trees as soon as the young leaves sprouted out. They could not develop on theleaves of broad bean, cabbage and radish. The appearance of adult stage of each generation was as follows:The overwintering adults hid among several evergreen trees such as Juniperuschinensis var. Kaizuca Hort., J. chinensis L., Biota orientalis (Linn.)., Cryptomeria japo-nica D. Don., Pinus massoniana Lamb., Myrica rubra Sieb. et Zucc. It was found thatabout 30% of these adults survived even at a low temperature of --20℃ in late Feb-ruary. Chemical control experiments were carried out both in the laboratory and in theorchards. The results indicated that the malathion miscible oil (25%) at the dilution of1:1,000--2,000 was the most effective spraying formulation, which gave 100% mortalities4 hours after treatment, while 30% parathion and 50% ethion (1240) at the dilution of1:1,000 and 1:500 respectively also gave satisfactory control and exhibited comparativelylonger residual effects. The DDT miscible oil (25%) at the dilution of 1:250 was alsoeffective for controlling this species, which gave 100% mortalities 24 hours after spray-ing in the orchard, and showed the longest residual effect.

桃一点叶蝉在长江流域为桃的重要害虫,据在南京、徐州、洞庭东山等地调查,为害桃的叶蝉共有4种即:桃一点叶蝉Erythroneura sp.,小绿叶蝉Empoasca flavescens,大绿叶蝉Cicadella viridis及棉叶蝉Chlorita biguttula。以桃一点叶蝉为主。它的主要寄主是桃,其他尚有杏、李、中国樱桃、贴梗海棠、月季、苹果、梨等。桃一点叶蝉在南京一年发生四代,以第四代成虫在常绿树如龙柏、侧柏、柳杉、桧柏、马尾松、杨梅上越冬。至早春桃现蕾萌芽时,从越冬寄主上大部分直接迁飞到桃上,少量可到其他寄主上,4月以后都集中到桃上,直到晚秋开始作越冬之迁飞。至11月中下旬全部迁到常绿树上越冬。 室内药效测定结果:25%马拉松乳剂,30%E-605及25%DDT乳剂效果最好,41%敌百虫效果不好,效果最差的是10%γ666乳剂。两次田间防治试验结果与室内一致。在桃园内为避免经常使用DDT而引起螨类的大发生,可采用马拉松,E-605来代替或与DDT混合使用防治桃一点叶蝉及其他桃树害虫。

Field and laboratory investigations on the overwintering forms of five species ofaphids, the cotton aphid, Aphis gossypii Glover, the English grain aphid, Macrosiphumgrandrium (Kirby), the turnip aphid, Rhopalosiphum pseudobrassicae (Davis), the greenpeach aphid, Myzus persicae (Sulzer), and the black citrus aphid, Toxoptera aurantii(Fonsc.) were carried out during 1955--1962 in Chungking, Szechuan. Under natural conditions, the cotton aphids lay overwintering eggs on certain de-ciduous woody plants, such as...

Field and laboratory investigations on the overwintering forms of five species ofaphids, the cotton aphid, Aphis gossypii Glover, the English grain aphid, Macrosiphumgrandrium (Kirby), the turnip aphid, Rhopalosiphum pseudobrassicae (Davis), the greenpeach aphid, Myzus persicae (Sulzer), and the black citrus aphid, Toxoptera aurantii(Fonsc.) were carried out during 1955--1962 in Chungking, Szechuan. Under natural conditions, the cotton aphids lay overwintering eggs on certain de-ciduous woody plants, such as the cotton-rose, Hibiscus mutabilis L., and the shrubbyalthaea, Hibiscus syriacus L. This species, however, will remain in parthenogenetic formsthoroughout the winter season on the herbaceous plant, such as the hollyhock, Althaearosea (L.). The English grain aphid, the turnip aphid and the black citrus aphid gene-rally continue their parthenogenetic generations in winter on their particular host plants.It seems more complicate in the case of the green aphid, those bred on winter growingvegetable crops, such as the various species of crucifers, the lettuce and spinach, usuallyreproduce asexually in winter; but a few sexuparae, sexual females and males may alsoappear on peach leaves. As the sexual females would not lay any overwintering eggwithout mating, and the males usually appear later on peach tree than the sexual females,hence the females are usually incapable of laying eggs before the falling of the peachleaves. Under experimental conditions, when the turnip aphid bred on old yellowing leavesof unhealthy plants of rape at a certain low temperature would produce a few sexualfemales and eggs, but no sexual male was observed. Some results were obtained fromfield investigations on the Chinese cabbage. The English grain aphid when bred arti-ficially on ears of wheat plants, which were sown early in August and reached headingand milky stage early in winter, produced a few males, but no sexual female or eggwas observed. Insectary breeding tests proved that inoculation of the cotton aphids ontohollyhock from field cotton, cotton-rose and shrubby althaea produced parthenogeneticoffspring; when the cotton aphids inoculated onto shrubby althaea twigs, cultured intap water, produced sexual offspring. These results were quite similar to those obtainunder natural conditions. The writer considers that the temperature, the photoperiod and the kinds and growthconditions of host plants will bring a combined effect on the reproduction of sexualforms in aphids, but the effect will be various in different species. Therefore, in thesame locality, different species of aphids may have different overwintering forms becauseof their different reactions to the environmental factors. Moreover, in one districtwhere the environmental conditions are fundamentally alike, under a definite low tem-perature, a species of aphid may either reproduce parthenogenetically or produce sexualforms in winter, depending essentially upon the different nutrient conditions in the dietobtainable by the species from its host plants.

在重庆地区的自然条件下,棉蚜Aphis gossypii Glover在冬季既可以在落叶木本植物如木芙蓉Hibiscus mutabilis L.、木槿 Hibiscus syriacus L.上产生两性世代的雄蚜和产卵雌蚜,并产卵过冬;也可以在宿根草本植物如蜀葵 Althaea rosea(L.)上继续以孤雌胎生世代的有翅或无翅胎生雌蚜繁殖过冬。麦长管蚜 Macrosiphum granarium(Kirby)、菜缢管蚜 Rhopalosiphum pseudobrassicae(Davis)和桔二岔蚜Toxoptera aurantii(Fonsc)通常都继续以孤雌胎生世代繁殖过冬。桃蚜 Myzus persicae(Sulzer)在十字花科蔬菜、莴笋Lactuca sativa var.angustana Irish、菠菜 Spinacia oleracea L.等冬季作物上可以继续营弧雌胎生世代繁殖,但在桃树上Prunus persica Stokes 可以出现少数两性世代的产卵雌蚜和雄蚜。由于雄蚜的出现时期较晚,将近在落叶以前,而产卵雌蚜不经交配通常均不能产卵,因此在桃树落叶前产卵雌蚜常未及产卵而随...

在重庆地区的自然条件下,棉蚜Aphis gossypii Glover在冬季既可以在落叶木本植物如木芙蓉Hibiscus mutabilis L.、木槿 Hibiscus syriacus L.上产生两性世代的雄蚜和产卵雌蚜,并产卵过冬;也可以在宿根草本植物如蜀葵 Althaea rosea(L.)上继续以孤雌胎生世代的有翅或无翅胎生雌蚜繁殖过冬。麦长管蚜 Macrosiphum granarium(Kirby)、菜缢管蚜 Rhopalosiphum pseudobrassicae(Davis)和桔二岔蚜Toxoptera aurantii(Fonsc)通常都继续以孤雌胎生世代繁殖过冬。桃蚜 Myzus persicae(Sulzer)在十字花科蔬菜、莴笋Lactuca sativa var.angustana Irish、菠菜 Spinacia oleracea L.等冬季作物上可以继续营弧雌胎生世代繁殖,但在桃树上Prunus persica Stokes 可以出现少数两性世代的产卵雌蚜和雄蚜。由于雄蚜的出现时期较晚,将近在落叶以前,而产卵雌蚜不经交配通常均不能产卵,因此在桃树落叶前产卵雌蚜常未及产卵而随落叶从桃树上消失。从接种饲养试验的结果证明:麦长管蚜在提早至8月播种,至冬季已进入乳熟期的小麦Triticum aestivum L.穗上,可以产生少数雄蚜,但未见产卵雌蚜。菜缢管蚜在生长衰弱的油菜 Brassica napella Choix的黄脚叶上,可以产生少数产卵雌蚜及卵,但未见雄蚜。在田间瓢儿白Brassica chinensis var

A method of extraction,separation and determination of the residual rogor (O,O-dimethyl S-(N-methyl-carbomoylmethyl) phosphorothionate) in vege- tables and fruits is described.The residual quantities of the rogor retained in the cabbages of different growing stages,in two-varieties of rapes and in leaves and fruits of peach tree were determined successively at intervals of the first,third,fifth and seventh day after the spraying of the insecticide. The insecticidal effects against the aphids as measured...

A method of extraction,separation and determination of the residual rogor (O,O-dimethyl S-(N-methyl-carbomoylmethyl) phosphorothionate) in vege- tables and fruits is described.The residual quantities of the rogor retained in the cabbages of different growing stages,in two-varieties of rapes and in leaves and fruits of peach tree were determined successively at intervals of the first,third,fifth and seventh day after the spraying of the insecticide. The insecticidal effects against the aphids as measured by lethal rate (in %) in respective period were recorded. It is found that at the first day after spraying the residual rogor in buds and stem of the cabbages at budding stage is about 2.5 times as that of the leaves of the same plant,while the amount of the insecticide in the whole plant at seedling stage is between the latter two.The rogor residue in Sun-li rape (cabbage type) is higher than that of the Pai-go rape (Chi- nese cabbage type).For the peaches,the rogor retained in the leaves is about 5 times as that of the fruits.The insecticidal effect agrees very well with the residual rogor in the tested samples. All the rogor residues retained in the tested samples are below I ppm. which is far below the recognized safety margin,2 ppm.

1.作者描述了一个效果较好而又节省有机溶剂的提取及分离乐果的方法。2.不同生育期青菜(四月慢)中乐果残留量的测定指出:在同株孕蕾抽苔期青菜上,苔莢中乐果含量为菜叶的2.5倍(施药一天后);同时也大于小菜期全株的含量。3.所试两种不同类型的油菜中,甘蓝型(胜利油菜)的乐果残留量大于白菜型(白果油菜)。这种差具可能由于生态的而非生理的原因所致。4.施药一天后,同株桃树上,桃叶中的乐果残留量为桃子的5倍。5.施药五天后,所测各样品的乐果残留量均小于1ppm,这个数值低于规定的安全限量2ppm。

 
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