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  15 th
    thepeak-hour of the Sagittaria trjfolia L. germination is on June 15th in the locality afterthe rice has been transplanted for twenty days or so;
    本地区的慈菇出苗高峰期为6月15日,即移栽后20天左右;
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    Result of the field tests conducted in 1984—1986 showed that the high time for chemical control vas in the abundant emergence period of female adults and hatching period of newly hatched larvae. It was about on May 15th, and June 25th in suihua respectively.
    1984—1986年试验,杨圆蚧化学防治的最佳时期是雌成虫羽化盛期和初孵若虫的孵化盛期,在绥化地区的时间分别为5月15日左右和6月25日左右,同时还避免对杨圆蚧主要的天敌——蚜小蜂地杀伤。
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    The most effective herbicide to kill cogongrass in artificial grassland was(N-methyl acid phosphate)especially(iso-propylaminates). The herbicide usedin this trail was N-aminoacetic aid. The suitable concentration and treating timewere 2kg herbicide+17.5kg water per mu sprayed on 15th June.
    清除白茅侵染人工草地较为理想的除草剂,是 N-甲基膦酸,其中以异丙胺盐灭草效果最好,本次试验所用草甘膦 N-(磷酸甲基)甘氨酸,属 N-甲基酸的硫氨酸,结果表明,适宜的处理时间和最佳浓度,剂量每亩2公斤,6月15日喷施,兑水量17.5公斤/亩。
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    The eclosion stage for 2nd generation eggs is in the 8th to 15th of August,which is a best time to control the pests by chemicals,pesticides and biological control.
    第二代卵孵化盛期为8月8日至15日,此时也是进行化学农药和生物制剂防治的大好时机。
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    The paper recorded a nwe disease──Red speck disease of Ormosia striataDuna,The pathogeny is Polystigma stragali(Lash)Hohnel. The specimen was collec- ted by Wu jianrong at the boundary of the Limesfone Area of Xiaomengyang ForestReseyve in Xishuangbanna,on June 15th,1990.
    槽玫红豆(OrmosiastriataDuna)是叶上的一种新病害──红豆红点病,病原为黄芪疔座霉(Polystigmaastragali(Lasch)Hohnel)标本于1990年10月15日采自西双版纳小勐养石灰岩森林保护区边缘。
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  “15日”译为未确定词的双语例句
    The time suitable for control are expected to be from May 15 to May 25, because during these days,population of the 4-6 instars accounts for 85%.
    防治的适期应掌握在5月15日至5月25日,林间4—6龄幼虫占85%左右为宜。
短句来源
    The incubation period of urediospores and teliospores is 6—16 days and 3—33 days respectively.
    人工接种产生夏、冬孢子的时间分别为6—15日、3—33日。
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    The death rate of pepper plant was 2—1% at control area while 30—100%at no treatment area.
    8月15日由政府组织验收调查,承包示范区疫病率为2-7%,非承包区的辣椒疫病死亡率普遍为30-100%。
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    2.During the field experimentsthe minimum temperaturps of一9.8℃in 1991.and一4.3℃in 1993 in Nanchang region,oc-curred but in March and April of the following years adult leaf beetle individuals were found inthis weed when it hegan to grow.
    2.田间试验,江西南昌地区,在1991年12月29日出现年极端低温为一9.8℃,1992年1月15日又出现一次年极端低温为一4.3℃。
短句来源
    Observations indoor indicated that emergence began on April 15 and ended by April 24, peak period was from April 22 to 24, low period was on April 28. Adult sex rate 1:1 31 (female: male).
    据室内观察成虫的羽化始期为4月15日,最迟至4月24日,羽化高峰期为4月22~24日,低峰期为4月28日; 成虫雌雄性比平均为1:1、31。
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  15 th
15th International Symposium on Plant Lipids (Okazaki, Japan, May 12-17, 2002)
      
The attachment disk and the primordia of five radial canals of the juvenile starfish became visible by the 15th and 18th days, respectively.
      
15th International Conference on Nondestructive Testing (October 14-21, 2000, Rome)
      
Memories of Buran (To the 15th Anniversary of the First Launch)
      
By the 15th-17th days, the conductance of potassium channels was reduced by a factor of 3-5, whereas the peak values of the chloride current, associated with the action potential, was reduced by a factor of 8-10.
      
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Lycaena (Polyommatus) boetica L. is an important pest of green manureplants, being especially injurious to several species of Crotalaria at Liuchow,Kwangsi. This small butterfly hibernates in the egg stage on flower buds,immature pods and other parts of the hosts. Hatching takes place early inMarch. The first adult is seen in April. The larvae can be found from Marchtill December, causing damage to flowers and pods. Under insectary conditionsthis butterfly was found to have 7-8 generations annually. Each generationvaried...

Lycaena (Polyommatus) boetica L. is an important pest of green manureplants, being especially injurious to several species of Crotalaria at Liuchow,Kwangsi. This small butterfly hibernates in the egg stage on flower buds,immature pods and other parts of the hosts. Hatching takes place early inMarch. The first adult is seen in April. The larvae can be found from Marchtill December, causing damage to flowers and pods. Under insectary conditionsthis butterfly was found to have 7-8 generations annually. Each generationvaried from 20-176 days.

紫蓝小灰蝶在广西柳州沙塘是因种野百合属绿肥豆荚的主要害虫。此外该虫还为害木豆、刀豆和扁豆。根据文献该虫也为害荷兰豆和蚕豆。 小灰蝶和豆荚螟为害绿肥豆荚的特征和区别文中有详细的叙述。 小灰蝶以卵态在绿肥的花苞、嫩荚、茎和叶上越冬。幼虫为害豆类的时期自3月下旬直至12月上旬。在饲育室内一年发生7—8代。一世代需时20—176。 成熟绿肥豆荚被害率自1.8—22.6%不等,本虫更为害花朵和嫩荚,使之凋落,不能结实。 绿肥作物终年开花结荚,不独是小灰蝶越冬的理想寄主,也助长其他重要豆作害虫如豆荚螟的繁殖。作者建议及时和合法刈割绿肥是解决本虫和若干其他豆作害虫的有效方法。

The rice stem borer, Chilo Simplex Butler causes great damage to therice crop in the medium semi-glutinous rice region, long water rice region,and late semi-glutinous rice region in Kiangsu. Rice stem borer has two generations a year. The first generation is mostabundant between mid-and late July. The second generation is most abundantin mid-late August. In 1952 and 1953, the borer had had reached and suchabundance cave in the middle of September, that a third incomplete generationseemed probable. Experimental...

The rice stem borer, Chilo Simplex Butler causes great damage to therice crop in the medium semi-glutinous rice region, long water rice region,and late semi-glutinous rice region in Kiangsu. Rice stem borer has two generations a year. The first generation is mostabundant between mid-and late July. The second generation is most abundantin mid-late August. In 1952 and 1953, the borer had had reached and suchabundance cave in the middle of September, that a third incomplete generationseemed probable. Experimental result shows that late sowing and late transplanting of riceminimized borer damage.

(一)二化螟在江苏省中粳区、沤田区及晚粳区为害严重,大部分枯心苗均为其造成。白穗中幼虫数目相当高,最多一株有137头。 (二)二化螟的发蛾期,一般来讲,第一代盛发期约在6月中、下旬。第二代盛发期约在8月中、下旬。根据观察记载资料,望亭一带,1952年、1953年均在9月中、下旬又起高峰,可能有不完全第三代的出现。 (三)试验记录中指出,人为的移栽对蚁螟的生存,有抑制作用。在栽培制度上,应控制第一代蛾螟卵盛孵期,在秧田内进行。以期达到水稻少受二化螟的为害。 (四)水稻受二化螟为害后,除造成枯心苗白穗外,并造成有虫株。其百分率最高占14.5%。有虫株穗与健穗,穗重相差0.46克。千粒重最高相差3.09克。 (五)在稻根稻草中,二化螟越冬比例,稻根为43.41%,稻草为56.59%。 (六)在不同播种期;移栽期各处理间,受二化螟为害,差异显著。望亭一带适宜播种期、移植期,以5月25播种,6月28移栽为最佳。 (七)第一代螟卵之寄生率平均为25.46%。寄生蜂种类有:(1)本赤眼蜂,(2)稻螟黑卵蜂。 (八)在防治上,除运用行之有效的治螟办法,如秧田捕蛾采卵、点灯诱蛾、剪除枯...

(一)二化螟在江苏省中粳区、沤田区及晚粳区为害严重,大部分枯心苗均为其造成。白穗中幼虫数目相当高,最多一株有137头。 (二)二化螟的发蛾期,一般来讲,第一代盛发期约在6月中、下旬。第二代盛发期约在8月中、下旬。根据观察记载资料,望亭一带,1952年、1953年均在9月中、下旬又起高峰,可能有不完全第三代的出现。 (三)试验记录中指出,人为的移栽对蚁螟的生存,有抑制作用。在栽培制度上,应控制第一代蛾螟卵盛孵期,在秧田内进行。以期达到水稻少受二化螟的为害。 (四)水稻受二化螟为害后,除造成枯心苗白穗外,并造成有虫株。其百分率最高占14.5%。有虫株穗与健穗,穗重相差0.46克。千粒重最高相差3.09克。 (五)在稻根稻草中,二化螟越冬比例,稻根为43.41%,稻草为56.59%。 (六)在不同播种期;移栽期各处理间,受二化螟为害,差异显著。望亭一带适宜播种期、移植期,以5月25播种,6月28移栽为最佳。 (七)第一代螟卵之寄生率平均为25.46%。寄生蜂种类有:(1)本赤眼蜂,(2)稻螟黑卵蜂。 (八)在防治上,除运用行之有效的治螟办法,如秧田捕蛾采卵、点灯诱蛾、剪除枯心苗和白穗、保护寄生蜂、处理稻根外,在栽培制度上,如何利用适宜播种期,减轻或免除二化螟灾害,为今后值得注意的问题。

The present paper reports on two lamellicorn beetles: Adoretus tennuimacu-latus Waterh. and Liocola brevitarsis Lew. The former belongs to the subfamilyRutelinae and the later Cetoniinae. Adoretus tennuimaculatus has two generations per year at Lientang. Thefirst active period of adults mostly occured in June and the second period inAugust. After 7: 30 at night, the adults went out and stayed on various hostplant leaves feeding or copulating and then back into earth at dawn. Larvaewere not strict in selecting...

The present paper reports on two lamellicorn beetles: Adoretus tennuimacu-latus Waterh. and Liocola brevitarsis Lew. The former belongs to the subfamilyRutelinae and the later Cetoniinae. Adoretus tennuimaculatus has two generations per year at Lientang. Thefirst active period of adults mostly occured in June and the second period inAugust. After 7: 30 at night, the adults went out and stayed on various hostplant leaves feeding or copulating and then back into earth at dawn. Larvaewere not strict in selecting the soil but most of them lived in the garden soil,mound soil and. clay landside. Liocola brevitarsis has only one generation per year at Lientang. The adultperiod was from June to September and some of them lengthened out mid-Octo-ber. Adults flied out at day time and sucked the different part of hosts: as theflesh of fruit, the juice of tree and the corn ear, once in a few days. Larvaeselected the soils more strictly. They concentrated in compost and rich humussoil. Controlling methods: (1) To spray 0.5%γ666 or 25% DDT emulsion (250water:1 emulsion) once to the host leaves was effective in protecting against theadults of Adoretus till its last period of activity. (2) To shake the tree to makethe adults of Adoretus fall down and then unroll a piece of white cloth underthe tree to gather the adults. (3) To make a bamboo cylinder, 12-16 in. long,which was filled with rotten fruits and nectar, and trap all the adults of Liocolain this cylinder. (4) To clean out the compost before June in order to kill mostof the larvae and pupae of Liocola.

1.本文所述的两种金龟子,其一为茶色金龟子,属鞘翅目,金龟子科中的Rutelinae亚科,其二为铜色白纹金龟子,属Cetoniinae亚科。 2.茶色金龟子在莲塘一年发生二代。其第1次成虫盛期多在6月。第2次则在8月;铜色白纹金龟子,一年仅发生一代,其成虫出现期为6至9月,少数可延长到10月中旬。 3.茶色金龟子的成虫,为夜出性,傍晚7时半后,即开始出土,停息在多种寄主植物的叶片上,取食或交配,拂晓时飞返土中。铜色白纹金龟子的成虫,为出性,取食成熟果子,玉米苞穗及多种树木的浆汁,亦喜取食。既钻入后,可连续数不出。 4.两种金龟子的幼虫,都栖息在土中。茶色金龟子幼虫以在菜园土中、丘陵黄土地及属于粘壤性质的田塍内为多,对于土壤性质选择,较不严格。铜色白纹金龟子幼虫则多集中在腐熟的堆肥及腐殖质极丰富的土中,对于土壤,有比较严格的选择性。 5.关于防治方法:茶色金龟子在成虫期曾试用了0.5%γ体666粉及25%DDT乳剂(1份加水250份〕喷撒,第1种药适用于叶面较粗糙的植物,第2种则可用于叶面较光滑的植物,只要喷撒1次,便能在整个成虫发生期中,避免其飞来取食。铜色白纹金龟子的成虫,则可采...

1.本文所述的两种金龟子,其一为茶色金龟子,属鞘翅目,金龟子科中的Rutelinae亚科,其二为铜色白纹金龟子,属Cetoniinae亚科。 2.茶色金龟子在莲塘一年发生二代。其第1次成虫盛期多在6月。第2次则在8月;铜色白纹金龟子,一年仅发生一代,其成虫出现期为6至9月,少数可延长到10月中旬。 3.茶色金龟子的成虫,为夜出性,傍晚7时半后,即开始出土,停息在多种寄主植物的叶片上,取食或交配,拂晓时飞返土中。铜色白纹金龟子的成虫,为出性,取食成熟果子,玉米苞穗及多种树木的浆汁,亦喜取食。既钻入后,可连续数不出。 4.两种金龟子的幼虫,都栖息在土中。茶色金龟子幼虫以在菜园土中、丘陵黄土地及属于粘壤性质的田塍内为多,对于土壤性质选择,较不严格。铜色白纹金龟子幼虫则多集中在腐熟的堆肥及腐殖质极丰富的土中,对于土壤,有比较严格的选择性。 5.关于防治方法:茶色金龟子在成虫期曾试用了0.5%γ体666粉及25%DDT乳剂(1份加水250份〕喷撒,第1种药适用于叶面较粗糙的植物,第2种则可用于叶面较光滑的植物,只要喷撒1次,便能在整个成虫发生期中,避免其飞来取食。铜色白纹金龟子的成虫,则可采用竹筒诱杀,筒高12—16寸,筒内盛腐熟果子及蜜,贴靠枝杆悬挂,能将圆内所有成虫,全部诱入筒中。此外,前一种成虫,并可利用外出?

 
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