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农业防除 1、土壤耕作。土壤耕作包括耕翻、深松土、耙地、中耕、开沟培土等。各种土壤耕作都有防除杂草的作用。耕翻能将表土的杂草种子翻到下层,减少它们萌发的机会。同时对多年生根茎类杂草,切断和深埋了一些根茎,也起到一定的灭草作用。播前切耙复式作业,不但保墒,而且能杀死萌发、出苗的杂草。又为土壤上层杂草种子创造适宜的条件,诱发它们发芽,以便苗期中耕消灭之.
Agricultural control 1, soil cultivation. Soil tillage includes tillage, deep tillage, harrowing, cultivation, ditching and so on. All kinds of soil farming have the role of weed control. Plowing can topsoil weed seeds to the bottom, reducing their chances of germination. Perennial rhizome weeds at the same time, cut off and buried a number of rhizomes, but also play a role in weeding. Sowing before rake duplex operation, not only moisture, but also to kill germination, emergence of weeds. But also for the top layer of soil weeds to create suitable conditions, induce them to germinate in order to eliminate seedling cultivation.