摘要
Abstract
The obvious eco-environment effects can be seen when the circular agriculture mode of planting-culture is applied and developed in the paddy production. These are mostly reflected in the fertilizer and pesticide saving, grass curbing, and soil and water improving. This paper analyzed empirically on the eco-environmental effects of fertilizer and pesticide saving of circular agriculture mode based on household survey data of rice area in southern China and the data from China Statistical Yearbook, China Rural Statistical Yearbook, China Agriculture Statistical Yearbook, 2001 -2009, Technical Standards of Chemical Fertilizer and Pesticide Usaqe. The investigation showed that, comparing to the conventional paddy rice planting mode, 15.21% and 40. 17% dosage of fertilizer and pesticide in the paddy-fish mode was reduced respectively and the correlation analysis showed that there was negative correlation between the percentage of paddyfield area of paddy-fish mode to total paddyfield area and the input dosage of fertilizer and pesticide in the paddy rice area in southern China. The correlation coefficient was - 0. 407 2 and - 0. 979 9 respectively. So, in the paddyfield ecosystem of paddy-fish mode, the soil and water is improved and harmful organisms are reduced, therefore, the substitute relation between the fish and fertilizer and pesticide is formed. Farmers significantly reduce the dosage of fertilizer and pesticide use under the circumstances that the output of rice is stability or even increases and the fish output rises. It is proposed to implement the strategy of supporting circular agriculture mode of planting-culture in paddyfield. This aimed at improving the agro-ecological environment in the paddy area.关键词
循环农业/稻田种养结合模式/南方稻区/稻-鱼模式/生态环境效应Key words
circular agriculture mode/ planting-culture combined/ the paddy rice area in southern China/ paddy-fish mode/ eco-environment effect分类
管理科学
