利用抗性作物品种来防治植物病虫害,在世界各国收到了显著的經济效果。如各个栽培甘蔗的国家栽培抗病品种以来,甘蔗糖的产量在世界糖产量中所占的比重,已由原来的40％上升到75—80％。对于培育抗病虫品种,各国都很重视。如日本在全国各地設置了不少特性檢定試驗 The use of resistant crop varieties to control plant pests and diseases has received significant economic impact in all countries in the world. For example, since the cultivated disease-resistant varieties of cultivated sugarcane in each country, the proportion of sugar cane sugar in the world sugar production has risen from 40% to 75-80%. For cultivating disease-resistant varieties, all countries attach great importance. Such as Japan in the country set a lot of characterization test