您要查找的是不是：
- Biological Characters and Inheritance of the Causal Organism of Cotton Boll Blight 棉铃疫病菌的生物学特性及其遗传研究
- cotton boll blight 棉铃疫病
- Farm demonstration work in the South helped to fight the cotton boll weevil. 南部农场示范工作大大帮助了对棉花象鼻虫的防治。
- 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。
- After a couple of weeks, almost all the infected plants bore cotton bolls. 一两星期之后几乎所有有病的棉花都结核了。
- FACTORS AFFECTING THE OUTBREAK OF THE COTTON BOLL ROT CAUSED BY GLOMERELLA GOSSYPII(SOUTH)EDG. 棉花烂铃及炭疽病的研究
- A Study on the Technique for Contiroling Cotton Boll Rot by the Regulatory Agent EMC. 乙缩调节剂防治棉花烂铃技术的研究
- Some cotton bolls have fallen on the ground. 有些棉桃落在地上了。
- Peroxidase activity in the pedicel abscission zone of young cotton boll was promoted either by removing the opposite leaf, removing stigma, or spraying ethrel on the flower. 使用去叶、阻止受精或乙烯利处理花朵的方法,诱发棉花幼铃脱落,铃柄离区的过氧化物酶活性增加,到脱落前达到最高值。
- The cotton bolls burst open, revealing masses of snow-white fibres. 棉桃绽裂，露出雪白的棉花。
- These beetles are a blight to cotton. 这些甲虫是棉花的大害。
- Boll weevil: grayish weevil that lays its eggs in cotton bolls destroying the cotton. 略带灰色的象鼻虫，在棉铃上产卵以破坏棉花。
- After a couple of weeks,almost all the infected plants bore cotton bolls. 一两星期之后几乎所有有病的棉花都结核了。
- After a couple of weeks, almost all the infected plants bore cotton bolls . 一两星期之后几乎所有有病的棉花都结核了。
- Study on the Controlling Index of Cotton Boll Worm 棉铃虫卵、天敌与产量的关系及其防治指标的研究
- Using victor boll inoculation method, cotton bolls of different ages were tested for resistance to \%Phytophthora boehmeriae, Diplodia gossypina\%and \%Colleto-trichum gossypii\%. 在室内离体条件下，对不同日龄的棉铃用孢子液浸铃法接种铃疫病菌、黑果病菌和炭疽病菌。
- the subtending leaf of cotton boll 棉铃对位叶
- The accident cast a blight on our happiness. 那场意外事故使我们的幸福生活蒙上了一层阴影。
- Cotton cloth is made in a cotton mill. 棉布是由棉纺厂生产的。
- Any of various small, flat, red and black bugs of the genus Dysdercus that pierce cotton bolls and stain the fibers. 棉蝽象，污棉虫：多种蝽象属的小而平的红和黑的虫子，常刺入圆荚，污染纤维
