除草剂对植物病害的影响

• 作 者: Jack Altman C.LeeCampbell 潘大钧
• 机 构: 美国科罗拉多州立大学植物学和植物病理学系。,美国宾夕法尼亚州立大学植物病理学系.,
• 出 处: 农药译丛
• 发表日期: 1981年05期
• 关键词: 除草剂 植物病害 病原菌 寄主作物 土壤微生物 总体影响 土壤化学 周围环境 杂草 草灭平

农药虽然是用来防治寄生于作物的害虫、病原菌和杂草,但也可能影响到土壤性质、土壤微生物和寄主作物本身。通常,这种影响对作物的生长没有妨碍,而且证明是有利的;有时只引起作物生长暂时的缓慢。近来证实,在一系列的特定条件下,某些农药会使作物易于感病。阐明每种新农药对土壤化学和生物学特性的作用,乃至周围环境的总体影响颇为重要。

Although pesticides are used to control pests, pathogens and weeds which are parasitic on crops, they may also affect soil properties, soil microorganisms and host crops themselves. Often, this effect has no impediment to the growth of the crop and has proven to be beneficial; sometimes it causes only a temporary slow crop growth. It has recently been confirmed that certain pesticides can make crops susceptible to disease under a range of specific conditions. It is important to elucidate the role of each new pesticide in the chemical and biological properties of the soil and the overall environmental impact.