电磁场灭草是不同于机械除草和化学药剂除草的一种新方法。它是使用一种能产生超高频电磁波的设备对播种土壤进行播前处理,使其抑制作物种子覆土深度内的杂草种子生命话动(因为这种设备能在发射器走过的轨迹上把能量集中于局部土壤内,在极短的时间内把土壤温度提高到杂草萌芽致死的温度338～343°K)。文中还介绍了苏联研制的一种带两个超高频发射器的试验样机及试验情况。 EMF is a new method different from mechanical weeding and chemical weeding. It uses a device capable of generating UHF electromagnetic waves to sow the soils before sowing so as to inhibit the weed seeds from growing in the depths of the crop seeds (since such a device can be on the path traveled by the launcher The energy is concentrated in the local soil, in a very short period of time to raise soil temperature to weed germination lethal temperature 338 ~ 343 ° K). The article also introduced a prototype developed by the Soviet Union with two UHF transmitters and experimental conditions.