Study On Promotion Strategy Of Farmland Non-point Source Pollution Prevention And Control Technology In Hilly Area

Farmland non-point source pollution is the focus of pollution control in China,and it is also a problem that is being concerned about all over the world.It is urgent to solve the problem of farmland non-point source pollution,and it is the key to prevent and control non-point source pollution from the source.The inappropriate amount of fertilization and the non-standard method are the important factors leading to farmland non-point source pollution,but only providing fertilization advice for farmers can not completely change the management mode of fertilization of farmers,and it is difficult to achieve the purpose of pollution prevention and control.This study will combine fertilization management investigation and soil attribute investigation to construct the popularizing strategy of farmland non-point source pollution prevention and control technology in order to provide theoretical basis for farmland non-point source pollution prevention and control in hilly areas.This article first uses field surveys and questionnaires to investigate the current situation of farmland fertilization management in Quxi small watershed;secondly,uses methods such as field sampling,indoor analysis,and statistical analysis to understand the general situation of farmland soil properties;then build and verify farmland non-point source pollution prevention Finally,the satisfaction of the promotion strategy of farmland non-point source pollution source prevention and control technology was investigated,and the influencing factors were analyzed by multiple linear regression.The main conclusions are as follows:(1)After home visits,field investigations,to understand the general situation of fertilization,and analyze its relationship with farmers’ behavior.In the mustard corn season,farmers fertilize high,and mustard fertilization is higher than corn fertilization,especially the nitrogen fertilizer application of mustard mustard;the fertilization method of farmers is unreasonable,most of which are spreading,so the method of hole application should be promoted;farmer environment Low awareness and no understanding of excessive fertilization.It is necessary to use farmers as the entry point to study technology promotion strategies in a way that farmers can accept.(2)The survey results of soil properties showed that the available nutrients of the plots in the study area reached the second level,the average content of total phosphorus reached the first level,the average content of total nitrogen and organic matter reached the third level,and the average content of total potassium reached the fourth level.In summary,the soil fertility level in the study area is generally average,and acid soil accounts for a relatively high proportion,and acid soil improvement is required.The soil attribute indicators are all moderately variable,of which organic matter and available phosphorus are the strongest.(3)According to the results of soil properties determination,effective phosphorus,available potassium,and alkali-hydrolyzable nitrogen are the main indicators for reducing fertilization,and relying on the optimal fertilization amount,fertilization recommendations are proposed for the study area.Divide the research into Zone A and Zone B,and implement technology promotion using traditional and precise promotion methods.Visit households,distribute fertilization cards for plots,and explain the reasons for fertilizer reduction,popularize knowledge about farmland non-point source pollution,and let farmers become a member of the prevention and control of farmland non-point source pollution sources.After testing,the precise promotion method is more effective and feasible,and it is an almost zero-cost promotion method.In this way,a chain technology promotion model based on soil survey,farmers’ wishes,exclusive customization,and precise guidance is summarized,which provides a reference for the prevention and control of farmland non-point source pollution sources in hilly areas.(4)Expand the scope to investigate the satisfaction of farmers in hilly areas with the promotion strategy.99.16% of farmers are satisfied and are willing to cooperate with technology promotion.Through analysis of influencing factors,several suggestions are put forward.Party members and village cadres take the lead in participating in the prevention and control of farmland non-point source pollution sources,leading farmers and members to participate together;raising farmers’ awareness of environmental protection;making farmers aware of the hazards of excessive fertilization;encouraging farmers’ intensive management.Improve farmers’ participation in the prevention and control of farmland non-point source pollution sources,and promote prevention and control technologies more efficiently.