查询词典 wheat aphid

With the results of monitoring the spatial patterns of cotton aphid populations in various stages, there are distinct spatial heterogeneity in the distribution of cotton aphid under large and small scales in different stages.

通过对大尺度和小尺度下不同阶段的棉蚜变异函数模型的拟合，得出大尺度和小尺度棉蚜空间分布在棉蚜种群不同发生阶段具有空间异质性，研究区域内，小尺度下棉蚜种群的空间异质性格局中平均有77.6%是由棉蚜种群内部的空间自相关造成的，而大尺度下这个比例达85%。

The selective behaviour, fitness, cause formation and population differentation of the cotton aphid''s host biotype were studied on this project. The results showed that the cotton and cumbrits biotype aphid were existed in natural population in Nanjing .

本项目研究了南京地区棉蚜对寄主的选择与适应性、寄主专化型的成因、寄主专化型蚜在DNA水平上的多态性及棉蚜迁飞特性的种群分化、迁飞型种群的遗传响应与杂交遗传。

The regression period of cotton aphid: The spatial patterns of aphid population were confirmed to exponent, linear and nugget model under large scale along with the time sequence, respectively, results suggested that the spatial patterns were aggregated, medium intensity aggregation and random distribution, respectively, and the space continuity is decreasing.

3消退期：大尺度下按时间顺序，棉蚜的变异函数模型分别为指数型、线性及块金模型，表明空间格局分别表现为聚集型、中等强度和随机分布，棉蚜种群的空间自相关性及空间连续性在后期递减。

137 Crude protein also has effect on controlling the growth of cotton aphid, cotton bollworm, striped rice borer, and the crude protein deposited with 25 percent ammonium sulfate has the most significant effect on controlling cotton bollworm and cotton aphid.

88—137粗提蛋白质对棉蚜、棉铃虫、二化螟的生长发育也有一定抑制作用，其中用25％硫酸铵沉淀的粗提蛋白质抑制棉铃虫、棉蚜作用最明显。

The results from insect bioassay with peach aphid showed that the transgenic plants of pBI121AVA-GUS and pBI121AVAc-GUS were aphid resistant, evidenced by a 60.81%~50.63 reduction in insect population density, some plants were more than 97%.

抗蚜实验表明含内含子和无内含子的AVA基因在转基因烟草中的抗蚜能力不同，转AVA和AVAc烟草对蚜虫的抑制率分别为60.81%和50.63%，有的植株高达97%。

As the development of resistance, the green peach aphid showed strong tolerance to pirimicarb and fenvalerate, so these two insecticides were not suitable for control the aphid in field for the risks to the natural enemy.

而抗蚜威和氰戊菊酯由于害虫抗药性或缺乏对天敌的安全性，已不宜用于桃蚜的化学防治。

It is seen from grafting Aphid test that green peach aphid can feed on green cabbage,spinach and lettuce,and reproduce on them,furthermore,it shows the different viability between on the tested hosts.

通过接种试验看出，桃蚜接种在青菜、菠菜、莴苣等蔬菜上均能取食繁殖，而且相互间可以接种，桃蚜接种在青菜上繁殖生长最快，萝卜蚜和桃蚜接种在番茄上则不能生活，青菜上的萝卜蚜和桃蚜接种在烟草上，其结果萝卜蚜不能生活，而桃蚜经过短期适应取食后，仍可生长、繁殖，为害烟草。

Grandis adult on peach aphid increased with the increment of peach aphid density when peach aphids were in 20 - 120 heads/dish, reached maximum （83.889 heads） and decreased when peach aphids were more than 120heads/dish.

方法在放有1头大突肩瓢虫成虫的培养皿中分别放20、40、60、80、100、120、140、160、180头无翅桃蚜，室内自然条件下饲养，研究大突肩瓢虫成虫对桃蚜的捕食作用。

It also has the function of stomach toxic and kills on contact , caterpillar ,vegetable aphid .The product are indicated for treatment of cabbage caterpillar , vegetable aphid sheep nose bot.

具有胃毒及触杀作用，对甘兰上的菜青虫，蚜虫，小菜蛾，红蜘蛛，蓟马，斑潜蝇有杀灭作用。

English grain aphid Macrosiphum avenae is the main pest on the ear of wheat during the drought year,which result in decreasing of yield and quality of wheat.

麦长管蚜Macrosiphum avenae是干旱年份小麦穗期的主要害虫，直接引起小麦减产且降低其品质。

The dissecting of samples in group2 were difficult. The root of pulmonary artery and ascending aorta failed to be unfolded because fibrous tissue was tough, right and left fibrous trigone were too firm to be solved by hand. Cardiac muscle fibers couldn't be stripped along myofibrillar trajectory since they were prone to break because of their friability.

组2的心脏解剖困难，表现为纤维组织坚韧，游离肺动脉非常困难；徒手无法松解左、右纤维三角，肺动脉和主动脉根部的游离非常困难；心肌纤维坚硬、质脆，解剖时容易断离成碎块，无法沿纤维走行方向剥离。

We have battled against the odds in a province that has become increasingly violent.

我们对在一个争夺日益激烈省的可能性。