论文部分内容阅读
棉花是常异花授粉作物,品种退化较严重,做好选留种工作很重要。现介绍选留种方法如下: 1.选择保持原品种特征特性的棉花留种 (1)从株型来看:正常棉株呈品种原有的塔形、筒形等自然株型,枝叶分布紧凑或疏散,长势
Cotton is often cross-pollinated crops, more serious degradation of varieties, well choose to stay kind of work is very important. Now choose to stay in the following methods: 1. Select to maintain the characteristics of the original varieties of cotton to stay species (1) from the plant type point of view: the normal cotton plant was the original tower, barrel and other natural plant type, compact distribution of branches and leaves Or evacuation, growth