随看科学技术的进步和人类对农产品需求的增长,人类对农业的认识也在不断深入。研究农业的科学经过高度分化,在各个方面达到一定水平后,在新的基础上开始了更高水平的综合,即把农业看作为一个与自然环境、社会经济和科学技术紧密相关的实体——农业生态系统来对待。在这种思想指导下,人们以农业生物、土壤和气象等学科的坚实知识为基础, With the progress of science and technology and human demand for agricultural products, human understanding of agriculture is also deepening. After highly differentiated agricultural sciences have reached a certain level in all respects, the science of agriculture started a new level of synthesis based on a new foundation, that is, considering agriculture as an entity closely related to the natural environment, socio-economy and science and technology - Agricultural ecosystem to treat. Under the guidance of this kind of thinking, people based on the solid knowledge of agricultural biology, soil and meteorology and other disciplines,