关键词: 科技贡献率, 科技贡献率

Abstract:

For a long time, fertilizer has become an important material in the promotion of crop yields. However, influenced by the technology, method and time of fertilization, a large part of chemical fertilizer untapped and lost into the surrounding environment, and the higher amounts the chemical fertilizer, the bigger the quantities of the loss to the environment, and also the higher the harm to the ecological environment. Based on the analysis of applied strength and density of chemical fertilizer in the Tarim River basin , this chapter analyses the soil, the water and the air pollution which resulted from the runoff of chemical fertilizer. So as to bring the attention and take measures to reduce the pollution of chemical fertilizer, this paper also researches the relationship between the negative environmental impacts induced by fertilizer inputs and the growth of agricultural production by introduced into the environmental Kuznets curve from the empirical term.