天然农药有很多,例如烟叶、韭菜、大蒜、等等都能杀虫(蚜虫)。天然农药,最好找的就是植物源的农药了.最常见的也是最好弄到材料的就是大蒜了,大蒜含有大蒜素以及多种烯丙基、丙基和甲基,其味辛辣、特臭,对于多种作物害虫具有灭杀和抑制作用。
近年农药研究比较活跃的领域有天然农药、原农药、手性农药等。
The active areas of pesticide chemistry are considered to be botanical pesticides, pro-pesticides, chiral pesticides and intensive search of novel bio-active structures.
Ames说,每一种植物,都富含100种以上的化学物质,包括“天然农药”,这是植物为了保护自己免于被取食者侵害而产生的。
Every plant, Ames said, is full of 100 or more chemicals, including "natural pesticides," which the plants make to defend themselves against predators.
她的膳食是由未受农药、盐或精制糖污染过的天然食品构成的。
Her diet consisted of natural food, uncontaminated by pesticides, salt or refined sugar.
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