一、除草剂除草法。日本开发出一种对大豆、玉米、水稻等旱地、水田作物都可以使用的快速除草剂,它是以1,8—氧氮环戊烷为核心的化合物。施用后,在1～2小时内即可见到除草效果,有效期达40天,40天后就分解,不会残留在土壤里,对动物试验也未见急性毒性。二、电流除草法。高压电流能损害杂草,而对农作物则通常无害。国外已研制出一种可安装在农业机械上的电流除草设备,并开始用来进行大面积的高压电流除草。用于甜菜和棉花除草时,可除掉97％～99％的杂草,且电压越高,除草效果越好。三、光化学除草法。将其施用到小麦、玉米等农作物的地里时,一遇到阳光,就会自动产生化学反应.可以高效率地把杂草杀死,而不损害农作物。四、动物除草法。如家兔放养到番茄园中,会迅速吃掉杂草,而对番茄秋毫 First, weeding herbicides. Japan has developed a rapid herbicide that can be used in dry and paddy fields such as soybean, corn and rice. It is a compound that uses 1,8-oxazolidine as its core. After application, the weeding effect can be seen within 1 to 2 hours. The expiration date is up to 40 days. After 40 days, it will not decompose and will not remain in the soil. No acute toxicity has been observed in animal experiments. Second, the current weeding method. High-voltage currents can damage weeds, but are generally not harmful to crops. Foreign countries have developed a current weeding equipment can be installed in agricultural machinery, and began to be used for large-scale high-voltage current weeding. Used for beet and cotton weeding, you can get rid of 97% to 99% of weeds, and the higher the voltage, the better the weeding effect. Third, photochemical weeding method. When applied to the ground of crops such as wheat and corn, chemical reactions are automatically generated as soon as sunlight is encountered, and the weeds can be efficiently killed without damaging the crops. Fourth, weeding method. If the rabbits are stocked in a tomato garden, they will quickly eat the weeds and fall on the tomatoes