最近,美国研究出一种在稻田里养虾的新方法。每年三月开始插秧时,将幼虾放入稻田里,小虾在灌溉的稻田里生长六个月。到八月割稻前两星期排除稻田里的水,这时稻地里的虾便钻入泥土里躲藏起来。稻子收割完毕之后,再将稻田重新灌满水,而藏在 Recently, the United States has developed a new method of shrimp farming in rice fields. When planting rice in March each year, young shrimp are placed in the rice fields and shrimp are allowed to grow in the irrigated rice fields for six months. By the time the rice was removed from the paddy fields two weeks before the rice was cut in August, the shrimp in the paddy fields crawled into the soil and hid. After the paddy harvest is completed, the paddy fields are refilled with water and hidden