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防效最好
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  best control effect
    (3) Pot test against B. cinerea indicated that Fq24 could significantly reduce disease occurrence of tomato gray mould and had the best control effect (88.14%) while B. cinerea was inoculated 48 hours after inoculation of Fq24.
    (3)对番茄灰霉病的盆栽试验表明,喷施Fq24发酵液可明显降低灰霉病的发病率,其中以间隔48h接种的防效最好,达到82.14%。
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    Nine biological pesticides were formulated with different solvents and emulsifiers to control rice blast in paddy field, it was showed that the best control effect was 65.69% with methanol as solvent and Tween 80 as emulsifier.
    选择不同的溶剂和乳化剂交叉配制成9种生物农药进行田间小区试验,结果表明:以甲醇作溶剂,吐温80作乳化剂防效最好,达65.69%。
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    6 seed coating possessed the best control effect with 79.77%~92.25% and control effect of the check in the fields is 72.06%.
    其中,种衣剂6号的防效最好,达79.77%~92.25%,大田防效为72.06%。
短句来源
    ③if the plants were inoculated with an-thracnose pathogen,Colletotrichum higginsianum,immediately after spraying BS-2 suspension,the best control effect was obtained,the effects in the third and sixth day were 95.12% and46.71% respectively;
    ③菌株对白菜炭疽病有较好的防治效果,但对不同时间接种病原菌的防治效果有所不同,以叶表面喷雾接种菌液后,立即接种病原菌的防效最好,其第3天和第6天的防效分别达95.12%和46.71%;
短句来源
    The results showed,there were the most significance between different pesticides,different inject time and different inject dosage. The best control effect was injected 40% dimethoate with dosage of 28ml/plant.
    结果表明:不同药剂间、不同剂量间、不同施药时间之间的防效均有极显著差异,5月6日注入的40%乐果(28ml/棵树)防效最好
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    of 6 strains, the efficacies of B5423 suppressing rice blast was best, those of 7, 14 days were 56.23%, 49.25%, significantly higher any other strains;
    菌株B5423对水稻稻瘟病的防效最好,其7、14d的的防效分别为56.23%和49.25%,显著地高于其它5个菌株;
    Result of two years field experiment in the field indicated that preparations of strains BS-208 and BS-209 could effectively control tomato gray mould. The control efficacy became better with the increasing of concentration and 800-fold treatment showed the best control efficacy.
    两年的田间试验表明枯草芽孢杆菌BS-208和BS-209制剂对番茄灰霉病均具有良好的防治效果,并且防效随浓度加大而提高,以800倍的防效最好,两菌株制剂800倍液连续三次施药后防效均达到74%以上,并且BS-208菌株的防效略高于BS-209菌株。
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    The mortality of scirpophageincertulas and cnaphalocrocis treated with azadirachtin were 72.2% and 85.7%, respectively, and the mortalities with avermectins were 66.0% and 80.1%, respectively. The control effects of azadirachtin and avermectins were as same as that of triazophoes. Biogenic pesticides including BT and Baibu were not suitable in crop protection.
    生物农药中以印楝素、阿维菌素对水稻三化螟、稻纵卷叶螟的防效最好,印楝素的防效分别达72.2%、85.7%,阿维菌素的防效分别达66.0%、80.1%,且均可达到常规化学农药三唑磷的防效。
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    The results showed that the control effects of 5 strains (S15, S72, S52, B6 and T4) were over 50.00%.
    田间小区试验中,以S15的防效最好达到76.60%,其次为S72和B6,分别为67.60%和65.10%; 其防效都明显高于多菌灵。
短句来源
    But the overall tendency shows that it is higher by 1:300 is than 1:200 of the rate of emergence, and higher by 1:200 than by 1:300 of the effect of preventive diseases.
    田间试验表明与对照相比,出苗率提高范围在2.8~5.8个百分点,总的趋势是1:300药种比的出苗率高于1:200药种比的出苗率,以处理4最高; 随着药种比例的增大,防病效果有提高的趋势,以处理1防效最好
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Peanut rust(Puccinia arachidis Speg.)was first found in Guang-dong in 1956,and has become epiphytotic since 1970,causing 25—59%in yield losses.The rust fungi infect leaflets,petioles,stipules,pegs,and hulls,producing typical pustules.Only uredospores have been observed.Theoptimum temperature for uredospore germination is 24.5—28℃;thethermal death point is 50℃.The incubation period is 6—8 days at 24.5—26.5℃,and longer at 21℃ and 29℃.Uredospores on leaflets,kept in 21—25℃,retained germinabilityand infectibility...

Peanut rust(Puccinia arachidis Speg.)was first found in Guang-dong in 1956,and has become epiphytotic since 1970,causing 25—59%in yield losses.The rust fungi infect leaflets,petioles,stipules,pegs,and hulls,producing typical pustules.Only uredospores have been observed.Theoptimum temperature for uredospore germination is 24.5—28℃;thethermal death point is 50℃.The incubation period is 6—8 days at 24.5—26.5℃,and longer at 21℃ and 29℃.Uredospores on leaflets,kept in 21—25℃,retained germinabilityand infectibility for 120—150 days.Intensive sun light inhibits sporegermination.Penetration mostly takes place through stomatal opening of theleaflets,but may also through the intercellular space of the epidermis.The amount of rainfall and retention of dew period play an impor-tant role in the disease development,as the temperature is favorable forthe rust fungi during the growing season.Volunteer rusted plants,in-fected crop debris,diseased hulls are the primary sources of inoculum,the first mentioned source being the most important.About 1000 cultivars of peanuts have been screened for resistance,none is highly resistant,but differs greatly in susceptibility among thevarieties tested.Early planting in the spring,late planting in the autumn,usingresistant varieties,spraying at 8—10 days intervals for 3—4 timesduring the period of disease on set,may significantly reduce the indidenceof the disease and increase yields.Daconil is the most efficient fungi-cide of all the chemicals tested.

花生锈病在广东省始见于1956年。1970年后迅速蔓延流行,致使花生产量遭受严重损失,轻病年损失约15%,大流行年损失为25—59%。本病原菌能侵害花生叶片、叶柄、托叶、茎、果柄及荚壳。在花生植株上只产生夏孢子,其发芽适温为24.5—28℃,致死温度为50℃,10分钟。未发现冬孢子。在24.5—26.5℃接种,潜育期为6—8天,21℃以下和29℃以上相应延长。在冬、春季室温条件下,夏孢子可贮存120—150天。强烈光照对夏孢子发芽有抑制作用。病原菌多数从寄主气孔侵入,也能通过表皮细胞间隙侵入。花生锈病的流行,与菌源、气候、品种的抗病性、栽培技术等条件关系密切,而湿度则是我省花生锈病流行的主导因素。春植花生锈病的初次侵染源来自秋植花生落粒病苗、病藤和带病荚果,而落粒病苗是主要侵染来源。鉴定了国内约1000个花生品种,未发现兔疫或高度抗锈的品种,但品种间的抗病力有明显的差异。种植抗病品种,春植花生早播,秋植花生适当迟播,发病初期每隔8—10天喷药一次,连续3—4次,有显著防效。供试药剂以“百菌清”防效最好

Our study on the hatching of the over-wintering eggs of wild silkworm (Bombyx mandarina Leech) during 1980-1984 indicated that the pest had three gernerations per year in Jioxing-Huzhou regions. The hatching of overwintering eggs begin in mid-April and reached the peak in mid-June.It was misunderstood in recent half century that the eggs hatching in mid-April were'first gerneration, and those hatching in late-June 'second generation'' . In fact, both were hatched from overwintering eggs. According to surveying,...

Our study on the hatching of the over-wintering eggs of wild silkworm (Bombyx mandarina Leech) during 1980-1984 indicated that the pest had three gernerations per year in Jioxing-Huzhou regions. The hatching of overwintering eggs begin in mid-April and reached the peak in mid-June.It was misunderstood in recent half century that the eggs hatching in mid-April were'first gerneration, and those hatching in late-June 'second generation'' . In fact, both were hatched from overwintering eggs. According to surveying, the rate of hatching was 0.15% in late-April, 7.9% in late-May and 91% until June 20. The overwintering eggs were laid from September 17 to December 14 with the prevalence time of oviposition in mid-November. The earlier the eggs were laid, the earlier they hatched. As a result, the incubation period amounted 122 days. Thus, it could conclude that the long incubation period of overwintering eggs in spring was due to the long period of oviposition in previous autumn-winter seasons and the complicated ecological environment in mulberry plantation.

研究证实(1980—1984年),嘉湖平原野蚕年发生三代.越冬卵始孵期为四月中旬,盛期为六月中旬.但近半个世纪以来.很多人一直误认为四月中旬发生的野蚕是第一代,六月下旬发生的为“第二代”,事实上都是越冬卵孵化的幼虫.均为第一代.经测定,四月下旬越冬卵孵化率为0.15%,5月下旬为7.9%,6日20日为91%.本区野蚕产越冬卵最的早在9月17日,高峰期在11月上旬.结束期在12月14日,越冬卵产出越早,翌年卵孵期也早,孵化的早和迟之间可相差122天.野蚕越冬卵翌年孵化期长的原因.与秋冬产卵期长及桑园生态环境复杂有关.据室内4月24日越冬卵孵化的幼虫连续饲养,到第三代卵期恰与室外第二代卵期相重叠,说明自然界发生第四代是可能的,但真正存活率在1%以下.在防治措施上,以在越冬卵孵化高峰期(6月15—20日)施用0.1%敌敌畏.防效最好.

Laboratory tests carried out in 1980-1981 showed that the fungicides Bordeaux mixture, Thiophanate, Bavistin and Tuzet were very poisonous to the agaric-like sporodochia of Agaricodochium came Iliac. In 1982, field tests indicated that among the fungicides, 1% Bordeaux mixture produced the longest effectiveness and the most effective in control. In 1983, the control effeets of 1% Bordeaux mixture were 95.0% 90.0 and 96.3% respectively in three places.

实验室药效试验表明波尔多液、托布津、退菌特、多菌灵对油茶伞座孢菌蘑菇型分生孢子座都有较大毒性。波尔多液的药效持续期最长;1982年田间小区防治试验,波尔多液防效最好(96.7%);1983年苗圃喷波尔多液防治试验,三个试点的防效分别达95.0%,90.0%和96.3%。

 
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