人们普遍认为,清除农作物田间杂草是有益的,特别是在农作物采收后,及时清除残留在地里的病残株加以烧毁或深埋,可以消灭许多影响作物生长的病原物在病残体内越冬越夏。如在蔬菜作物上,白菜霜霉病以卵孢子在病叶内,辣椒炭疽病菌在病残体的果实上越冬,清除这些病残株对减少下一个生长季节病原物的初侵染源起着重要作用。且田边、路旁、沟渠、荒地等都是杂草容易“栖息”和生长的地方,是农田杂草的重要来源之一。 It is generally accepted that it is beneficial to remove weeds from crop fields, especially after the crops have been harvested, and the timely removal of residual diseased plants in the ground can be burned or buried deep to eliminate many pathogens that affect the growth of the crop. Winter over the summer. As in vegetable crops, cabbage downy mildew in oocysts in the diseased leaves, pepper anthracnose bacteria overwintering in the diseased fruit, removal of these diseased strains to reduce the initial source of infection in the next growing season pathogenic Important role. And the fields, roadsides, ditches, wasteland and other weeds are easy “habitat ” and the growth of places, is one of the important sources of farmland weeds.