說起稗草,大概誰都不陌生。只要吃过大米,就一定見过带有灰色硬壳的稗子。稗草是稻田里最难除尽的杂草,为什么呢?原来,它同水稻是“远房兄弟”,它們都是湿生性的植物;稗草在小时候长得和稻苗十分相象,因此,长在稻田里,就容易魚目混珠,騙过人们的眼睛。可是,1956年,有一个美国学者发现一种新的杀草剂,名叫“势大猛”(3,4—二氯苯丙酰胺),竟能专杀稗草,不伤水稻。当稗草的叶片接触到这种药剂后,不到几个小时,叶 Speaking of scribbled grass, probably no one is unfamiliar. As long as you have eaten rice, you must have seen a gray hard shell dumplings. Weed grass is the most difficult weed in the paddy field. Why? Originally, it was the “far brothers” with rice. They are all wet plants; the grasses grow like rice seedlings when they are young. Therefore, When growing up in the rice fields, it is easy for fish to fool people’s eyes. However, in 1956, an American scholar discovered a new herbicide called “big and fierce” (3,4-dichlorophenylpropanamide) that could kill grass and kill rice. When the leaves of Valeriana touch this agent, less than a few hours later, leaves