The cotton bolls are bursting.

棉花铃子正在开。

Larvae cotton leaf affected cotton harm, mature open bolls.

幼虫为害棉叶，影响棉花成熟吐絮。

After a couple of weeks, almost all the cotton plants bore bolls.

一两个星期之后几乎所有的棉花都结桃了。

The resistance of cotton bolls was closely associated with their development stages.

棉铃的抗病性与其发育阶段和环境条件密切相关。

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。