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| 1 | Decoupling of grain production from land resources in China:Land use reduced but fertilizer and water use intensified显示文摘The issue of grain security in China is attracting global attention. In this research, we analyze the relationship between grain production and cropland resources. The results indicate that decoupling of these two variables is realized at the national level, and fertilizer and irrigation play increasingly important roles in grain production. Of the 18 principal grain producing provinces, seven showed absolute decoupling, three showed relative decoupling, five showed quasi-relative decoupling, and three provinces showed coupling. Also, the relative importance of fertilizer and irrigation in grain production is different among the four different modes of coupling/decoupling. | YU Fa-wen Karin E.LIMBURG | 2014 | Ecological Economy2014，7，2： | 0 |
| 2 | The Non-point Source Pollution Effects of Pesticides Based on the Survey of 340 Farmers in Chongqing City显示文摘Using the survey data on 340 farmers in Chongqing City,this paper performs an empirical analysis of the factors influencing the non-point source pollution of pesticides. The results show that the older householders will apply more pesticides,which may be due to the weak physical strength and weak ability to accept the concept of advanced cultivation; the householders with high level of education will choose to use less pesticides; the pesticide application rate is negatively correlated with whether farmers have participated in agricultural technology training,that is,the farmers having participated in agricultural technology training have stronger ability to scientifically apply pesticides,and in-depth understanding of advanced agricultural production technology and positive and negative effects of pesticides,so they often choose to reduce the application rate of pesticide; the cognitive factor on the role of pesticides in better promoting the growth of crops is significant,which requires the government and relevant departments to carry out concrete publicity of effectiveness and negative impact of different pesticides during the popularization of agricultural science knowledge,to prompt farmers to have a systematic and in-depth understanding of the agricultural nonpoint source pollution caused by pesticides. | Lianchao YU Limeng GU Qian BI | 2015 | Asian Agricultural Research2015，7，7： | 0 |
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