我国是一个以农业立国的国家,根据考古资料证实,农业发展史已经有五千多年了。五千年来,祖国农业有很大的发展,耕地面积已经由很早以前的小块土地发展到现在的十六亿八千多万亩,分布遍及全国各地,负担着六亿人民的生活所需,这是我们赖以生存的主要物质资料。五千年来,我国农业科学事业也有很 Our country is a country that bases its country on agriculture. Based on archaeological data, it has been proven that the history of agricultural development has been more than 5,000 years. Over the past 5,000 years, there has been a great development in agriculture in the motherland. The cultivated area has grown from a small piece of land a long time ago to more than 1.68 billion mu nowadays, distributed throughout the country and borne the lives of 600 million people Need, this is the main material we rely on to survive. For five thousand years, there is also a great deal of agricultural science in our country