typal

1.A new typal insecticide, its generation, physical and chemical properties, insecticidal mechanism, insecticidal characteristic and synthesis of diflubenzuron are introduced.

介绍了新型杀虫剂──除虫脲的发现、理化性质、杀虫机理、杀虫特成方法。

2.It has a longer leaf functional period,shorter distance between times,and slower speed with the awn′s yellowing than those of other typal wheats.

此种类型小麦的叶功能期较长，时间距较短，麦速度较慢。