一、双子叶农作物减产引起的思索 我生长在农村,父母都是农民,经他们勤劳的双手,每年都能收获许多粮食、棉花、蔬菜和又大又甜的水果。但是近几年来,不知什么原因,被长势很强的玉米包围的西瓜、甜瓜、棉花、大豆,刚出苗时,长得又快又壮,一到六月中旬,它们就不像原来那样生机勃勃了。有的叶片萎缩 I. Thoughts Caused by Crop Yield Reduction in Dicotyledons I grew up in the countryside and both parents were peasants. Through their industrious hands, they can harvest many grains, cotton, vegetables and big, sweet fruits every year. But in recent years, for unknown reasons, the watermelons, melons, cotton, and soybeans, surrounded by the growing corn, grow fast and strong when they emerge, and in mid-June, they are not as vigorous as they were It’s Some leaves atrophy