一、国内外研究应用现状 由于全球范围的环境恶化和日益严重的生态危机,迫使人们共同采取行动来保护人类赖以生存的地球环境。近年来,各国环保战略发生了新转折,在产品结构调整时出现了新的绿色战略,绿色产品和绿色技术不断问世。随着国际上对生态农业的日益重视,我国生态农业已初见端倪,其主要标志就是在发 I. Status of Research and Applications at Home and Abroad Due to the deteriorating environment and the increasingly serious ecological crisis in the world, people are forced to take joint actions to protect the global environment on which mankind depends. In recent years, the environmental protection strategies of all countries have undergone a new turning point. A new green strategy has emerged in the adjustment of product mix. Green products and green technologies are coming out. With the increasing emphasis on eco-agriculture in the world, eco-agriculture in China has already begun to take shape. Its main symbol is that