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- 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。
- 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。
- Some cotton bolls have fallen on the ground. 有些棉桃落在地上了。
- The cotton bolls burst open, revealing masses of snow-white fibres. 棉桃绽裂，露出雪白的棉花。
- 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。
- 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
- It is true that there is temporal and spatial difference for weight and fibre quality of cotton bolls. 棉花生产中棉铃的重量及其纤维品质存在时空上的差异，这是客观事实。
- If they are not fertilized and watered in time, the cotton bolls will wither and fall down for lack of nutrition. 此时如果不适当地施肥浇水，就会造成棉铃因缺乏营养而凋落。
- 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。
- Cotton (Gossypium hirsutum... followed by small green seedpods (cotton bolls), which contain the seeds... ...如旅馆、医疗单位用的毛巾、清洁布、茶袋、桌布、绷带及抛弃式制服、床单等。
- Because the larvae and pupae remain inside the cotton bolls, they cannot be killed with insecticides. 因幼虫和蛹期都在棉铃内度过，所以此时用杀虫药无效。
- 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。
- It was a cloudless, windless day.The harvest season was at its peak.There were remaining cotton bolls in the field waiting to be picked. 天无风无云，大地是秋收后的风景，棉花地里也有没有摘完的棉花还等待农民收获。
- 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
- 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。
- 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
- 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。
- This time's typhoon easy to create crops lodging and so on paddy rice, corn, soybean, the cotton cotton bolls and cotton buds falls off, suffers injury heavy and difficult to restore. 此时的台风易造成水稻、玉米、大豆等作物倒伏，棉花蕾铃脱落，受损重且难恢复。
- He had good pilots and paid them well, and they slid out of Charleston and Wilmington on dark nights, bearing cotton for Nassau, England and Canada. 他用高薪雇用了很好的驾驶员，他们在黑夜载着棉花偷偷离开查尔斯顿和威尔明顿，向纳索、英国和加拿大驶去。
