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1·Farm demonstration work in the south helped to fight the cotton boll weevil .

在南部的农业示范作帮助了对棉花象鼻虫的抗争。

2·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。

3·While fibre break strength was increased with cotton boll age, it was reduced when temperature dropped.

纤维断裂比强度随铃龄增大而升高；相同铃龄随温度下降断裂比强度降低。

4·Some biological characters and its inheritance of the causal organism of cotton boll Anhui were studied in vitro.

在实验室条件下，对安徽省棉铃疫病菌的若干生物学特性及其遗传进行了研究。

5·The intensity of inhibition was correlated with the contents of Tannin Acid of the cotton boll in different position.

不同播种期、不同铃期铃的各部位的抑菌强度和棉铃中单宁浓度呈正相关；

6·It has three generations a year in Shanghai and overwinters asa diapaused larva in the head of the garlic and the dead cotton boll.

在上海一年发生三代，以滞育幼虫在蒜头和枯棉铃组织内越冬。

7·The sensitivity of diapause induction by photoperiod of the larvae fed by corn ear was stronger than that of the larvae fed by cotton boll.

取食玉米雌穗的幼虫对滞育诱导光周反应的敏感性强于取食棉铃的幼虫。

8·According to quite a number of research results, this review first made it clear that plant hormones could transport from other organs to cotton boll through phloem.

通过对大量试验结果的分析，初步明确了棉铃确实与其它器官间存在着激素信息的传递，并证明传递的主要途径是韧皮部而不是木质部。

9·The nitrogen accumulation in cotton boll-shell, cottonseed, cotton fiber and single boll were significantly affected by the nitrogen application rates and their blooming stage.

铃壳、棉籽、纤维及单铃氮素累积受施氮水平和开花期的影响。

10·In the early years of the century, the boll weevil began devastating the cotton farms in the south.

在上世纪初期，棉铃象甲开始破坏南部的棉花农场。