查询词典 cotton boll

It's called the boll weevil because it destroys the cotton boll , the seed pod that contains the cotton.

之所以会被称为棉子象鼻虫，是因为这种昆虫会毁坏棉花球，以及含有棉花的种子荚。

Young ones feed on the boll, the part of the cotton plant that contains the seeds.

它的幼虫以boll为食，boll是棉花植株上包裹种子的部位。

The development of Bt cottons has greatly decreased the yield loss of cotton production caused by cotton boll worm and the utility...

转基因抗虫棉的研制成功与生产上的广泛应用，带来了巨大的社会效益与经济效益。

Planting resistant cotton varieties, agricultural and chemical control are important measures of integrated management of cotton boll worm.

本文提出适合江西棉区推广应用的棉铃虫综合治理措施，包括种植抗虫棉、农业防治、化学防治等。

The development of Bt cottons has greatly decreased the yield loss of cotton production caused by cotton boll worm and the utility of chemical insecticides for boll worm-protection have been decreasing these years.

转基因抗虫棉的研制成功与生产上的广泛应用，带来了巨大的社会效益与经济效益。

Although direct lethal effects on cotton boll worm couldn't be generated in tobacco plants transformed with cholesterol oxidase full gene vector or mature enzyme gene vector, inhibitory effects on the growth and development of cotton boll worm have been observed to a certain degree.

转单价胆固醇氧化酶全酶基因和成熟酶基因的转基因烟草植株均不能对棉铃虫产生直接的致死作用，但能使棉铃虫的生长发育受到一定程度的抑制。

Trichogramma showed high control efficacy on cotton bollworm eggs after three times of release both in the second and in the third generation bollworm periods. The parasitism on the second and third generation bollworm eggs were 66.0%-70.7% and 76.0%-81.2%, respectively, which were significantly higher than that in the control (second generation: 7.0%-12.3%, third generation: 5.2%-7.4%). And the injury rate of cotton buds and bolls in the second and third generation bollworm were 2.2% and 3.1%, respectively, which were significantly lower than that in the control (second generation:8.5%, third generation: 20.9%). In the second generation bollworm period, number of bollworm eggs or larvae in the Trichogramma released cotton field did not differ to that in the chemically controlled field. But in the third generation, there were significantly less bollworm eggs and larvae in the Trichogramma released cotton field. There were more predators in the Trichogramma released cotton field. These results indicated that cotton boll worm in the transgenic insect-resistant cotton field can he effectively controlled by mass-releasing of T.

结果发现：棉铃虫卵在棉株不同部位的分布差异较大，2代棉铃虫卵主要分布在叶正面、叶背面和茎尖，3代棉铃虫卵主要分布于蕾铃；在放蜂田，赤眼蜂对棉株不同部位棉铃虫卵的寄生率差异较大，2，3代棉铃虫时期对叶正面、叫背面、茎尖、蕾铃的棉铃虫卵寄生率均较高，对叶柄和茎杆处卵的寄生率较低；并以3代棉铃虫时期的寄生率较高；在2，3代棉铃虫时期分别连续释放3次赤眼蜂，对棉铃虫具有很强控制作用，2，3代棉铃虫卵的被寄生率分别为66.0%~70.7%和76.0%~81.2%，均显著高于化防田的自然寄生率（2代：7.0%~12.3%，3代：5.2%~7.4%）；蕾铃被害率分别为2.2%和3.1%，均显著低于化防田（2代：8.5%，3代：20.9%；2代棉铃虫时期，放蜂田和化防田的棉铃虫卵量和幼虫数量差异均不显著，但3代棉铃虫以后，放蜂田棉铃虫卵量和幼虫数量均显著低于化防田，且放蜂田的捕食性天敌数量显著高于化防田。

On the condition of complementary nutrition at the adult stage, the average egg numbers oviposited by one female of cotton bollworm which fed cotton leaf, cotton boll and artificial diet at.

在成虫期有补充营养条件下，幼期取食棉叶、棉铃和人工饲料个体的平均单雌产卵量分别为565.2、1005.8和1052.2粒；成虫期无补充营养，则单雌产卵量依次为162.2、400.6和1035.6粒。

Cotton ; Boll development ; Boll abscission ; Simulation model

棉花；蕾铃发育；蕾铃脱落；模拟模型

However, V.dahliae was found in all parts inside the cotton boll after the boll was inoculated by injection.Generally, V.

通过注射接种棉铃，可以在棉铃内部隔膜、铃内纤维、铃内中隔、棉籽壳和棉籽胚中检测到黄萎菌。

I am accused of being overreligious," she said in her quiet, frank manner,"but that does not prevent me thinking the children very cruel who obstinately commit such suicide.""

客人们在卡罗利娜·埃凯家里，举止就文雅一些，因为卡罗利娜的母亲治家很严厉。

Designed by French fashion house Herm è s, this elegant uniform was manufactured in our home, Hong Kong, and was the first without a hat.

由著名品牌 Herm è s 设计，这件高贵的制服是香港本土制造，是我们第一套不配帽子的制服。