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20世纪80年代以后，由于化肥、农药的大面积推广应用，尤其是水田除草剂的推广应用，解决了草荒难题，使水稻产量不断提升，这对国人解决温饱问题发挥了巨大作用。但是，其负面影响极其严重，一方面，化学药物的大量施用严重污染了水域环境与土地资源，造成水生物与土壤微生物不断减少，导致生态环境恶化；另一方
Since the 1980s, due to the large-scale popularization and application of chemical fertilizers and pesticides, especially the popularization and application of herbicides in paddy field, the problem of grassland shortage has been solved and the output of rice has been continuously increased. This has played a great role in solving the problem of food and clothing for the Chinese people. However, the negative impact is extremely serious. On the one hand, the massive application of chemical drugs seriously pollutes the water environment and land resources, resulting in the continuous decrease of aquatic organisms and soil microorganisms, resulting in the deterioration of the ecological environment. On the other hand,