近年来随着市场经济的发展，加快了动植物新品种、新技术的传播及应用，其中引进国内外优良品种，在丰富地方品种资源，改造现有品种性状，提高农牧业产量及增加花色品种的同时，也带来了可观的经济效益和社会效益。但大量外来品种的涌进，也随之带来了一些不可避免的问题，诸 In recent years, with the development of market economy, the dissemination and application of new species and technologies of plants and animals have been accelerated. The introduction of domestic and foreign fine varieties enriches the resources of local varieties, renovates the traits of existing varieties, increases the output of agriculture and animal husbandry, and increases the color of the plants Varieties at the same time, but also brought considerable economic and social benefits. However, the influx of a large number of exotic species has also brought along some inevitable problems