查询词典 armyworm

Bioassay results at the laboratory showed that HNPC-A2005 had good stomach, contact, comprehensive action and a weak systemic activity to the lepidopterous insects such as oriental armyworm Mythimna separata and imported cabbageworm Pieris rapae. Quick knockdown action was also observed during the experiment.

室内生测结果表明，HNPC-A2005对粘虫和菜青虫等害虫具有优异的胃毒、触杀和综合毒力，且在试验过程中还发现该化合物具有对昆虫击倒快的特点，但内吸作用较弱。

Compound 1k had better bioactivity and exhibited 100% mortality against armyworm and culex mosquito at 500 mg/L.

化合物1k活性最好，在500mg/L时对粘虫和淡色库蚊的杀死率均为100%。

Many other butterflies and moths also migrate seasonally, including the gulf fritillary, the painted lady , the black cutworm, and fall armyworm.

许多其他种类的蝴蝶和飞蛾也会季节性的迁徙，包括海湾豹纹蝶，苎胥，小地老虎和粘虫。

The first part covered the morphological characteristic, regularity of onset, characteristic and degree imperilment of blank cutworm, Asiatic corn borer and armyworm on corn main pest.

1研究了玉米主要害虫小地老虎、亚洲玉米螟、粘虫的形态特征、发生规律、为害特点和为害程度。

There isn"t obvious selectivity in blank cutworm imperilment, the onseting quantity and imperilling degree is similar on different crops. It"s more serious in the field of invasion of weeds and corn intercrop potato than single cropping of corn, and the field of forecrop green manure is more serious than single cropping. Imperilment degree of black cutworm is very serious in both high altitude region as Dewu (1780 meters) and low altitude region as Lemin (1450 meters). The imperilment degree in two regions have no obvious differences. 4. The imperilment of second generation armyworm is very serious in both high altitude region of Dewu and low altitude of Lemen town.

3小地老虎的为害对品种没有明显的选择性，各品种小地老虎发生量和受害程度相似；作物对小地老虎发生为害程度影响较大，杂草丛生的地块和玉米与马铃薯间作的地块受害程度明显高于玉米净作地块，而前作为绿肥的地块受害程度也比净作高；土壤条件对小地老虎发生为害程度有影响，土质疏松、肥沃、团粒结构良好的地块受害程度明显比地势低洼、土质粘重、瘠薄的地块重；小地老虎在高海拔的德坞(1780米)和低海拔的乐民(1450米)两地发生为害均较重，为害程度没有明显差异。

It will take 51 to 63 days for second generetion of armyworm to develop from egg to larva, pupa, and imago in Dewu region. 5. There is evidently difference of armyworm imperilment degree in different altitude.

幼虫发生期在6月中下旬至7月中下旬，乐民发生期比德坞早3-5天；第二代粘虫在德坞地区完成从卵、幼虫、蛹和成虫一个世代需经历47至59天。

High altitude region is more srious than low region. The armyworm imperilment degree varies in different crops. The field planted wheat as forcrop is serious. Also, different levels of cultivation management have evident effects on the imperilment degree of armyworms. For instance, the fields of rough management and bad crop growing suffered more serious imperilment than those of high quality management, intensive cultivation and good crop growing way.

5海拔高低不同，粘虫为害程度有显著差异，表现为高海拔地区较低海拔地区受害重；不同作物对粘虫发生为害程度影响较大，表现为前作为小麦的玉米受害重；耕作管理水平对粘虫发生为害程度有显著影响，表现为管理粗放、长势差的地块受害最重，而管理水平高，精耕细作，长势良好的玉米地受害轻。

In our study,two important lepidopteron pests,beet armyworm and cotton bollworm were surveyed for their endogenous piggyBac.As a result,endogenous piggyBac elements were found in these two insects,and one of the piggyBac elements isolated from the genome of cotton bollworm was intact and thought to be potentially active.1 Clonging and sequence analysis of piggyBac from beet armywormUsing PCR technique,with degenerate primers,a DNA fragment of piggyBac-like element was cloned from the genome of beet armyworm,spodoptera exigua hubner.The DNA fragment was 456bp in length,and the deduced amino acid sequence shares 50%- 78% similarity with other piggyBac elements from insects.But one stop code was found in this DNA fragment.

由于转座子很难用常规的RT-PCR和RACE技术进行克隆鉴定，故本研究在兼并引物PCR的基础上，利用inverse PCR和vectorret PCR技术，不仅调查了鳞翅目两种重要的农业害虫甜菜夜蛾和棉铃虫的內源piggyBac存在情况，同时克隆到了內源性的piggyBac转座子，并且从棉铃虫中获得了一个结构完整、具有潜在活性的piggyBac转座子HaPLE1.1甜菜夜蛾piggyBac转座子基因的克隆与序列分析采用PCR技术，利用兼并引物，从甜菜夜蛾基因组中克隆出一个內源性piggyBac类似因子的DNA片段，并命名为SePLE。

Oriental armyworm Mythimna separata is one of migratory pests which caused heavy economic losses on crops in China. During the 1950-1970, significant correlation was existed between armyworm outbreak and nectar source plants.

粘虫Mythimna separata是一种迁飞性害虫，曾经造成我国主要农作物产量的重大损失，20世纪50-70年代粘虫大爆发与蜜源植物种植面积的激增表现了显著的相关性。

It was indicated that the control of beet armyworm with sex pheromone could be used as a safe way to reduce the harm of chemical pesticide in integrated control of beet armyworm.

表明，应用昆虫性信息索诱杀防治主害代甜菜夜蛾可作为减少化学农药的无公害防治手段列人甜菜夜蛾综合防治体系中。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。