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一、清园一茬蔬菜收获后,很多病菌附在蔬菜残枝上散落田间,它进入土壤中,成为下茬蔬菜的浸染源。因此菜农应在蔬菜生长后期加强病害防治,直接减少病源基数,并且在每茬蔬菜收获后,彻底清除田间残枝败叶,对易感根系病害的蔬菜还要清除残根。二、深耕深耕的目的是破坏病菌的生存环境,一般要求每次收获后深耕40厘米,借助自然条件,如低
First, a harvest of vegetables in the Qingyuan after a lot of bacteria attached to the vegetable residue scattered on the field, it enters the soil, become the next source of vegetable contamination. Therefore, vegetable farmers should strengthen the disease prevention and control in the late vegetable growth stage, directly reduce the base number of the pathogen, and after harvesting each vegetable, the complete elimination of the field leaves and decayed leaves, root vegetables susceptible to root disease but also remove residual roots. Second, deep plowing The purpose of deep plowing is to destroy the living environment of germs, generally require deep plowing 40 cm after each harvest, with the natural conditions, such as low