| Jilin province enjoys a favorable geographical position and is known as the "golden corn belt".It is the main grain-producing area and the main commodity grain base in China.The straw output reached 40 million t,among which the corn straw output accounted for the highest proportion in the total straw output.Therefore,Jilin province has unique advantages in carrying out the resource utilization of corn straw.At present,the comprehensive utilization rate of straw in Jilin province is low and the process of development is slow.Jilin province should accelerate the transformation of traditional straw utilization methods and put forward targeted solutions according to the current situation of straw utilization and existing problems.According to the actual situation of Jilin province,this paper selects three main utilization modes of corn straw returning to the field,feed and power generation,and from the perspective of comprehensive benefits,summarizes the optimization utilization mode of corn straw by using analytic hierarchy process and fuzzy evaluation,and provides reasonable and feasible schemes.The main research contents of this paper are as follows:1.On the basis of the theory of sustainable development,according to the regional distribution of corn straw resources in Jilin province,the number of corn straw resources is calculated to grasp the utilization potential of corn straw resources in Jilin province.2.After a preliminary understanding of the current situation and mode of corn straw utilization in Jilin province,three main utilization modes of corn straw were selected as the evaluation objects of this paper through consulting relevant literature and data analysis of field investigation.This paper expounds the status quo of the three main utilization modes and the problems in the process of utilization,and analyzes the specific reasons for the problems in the main utilization modes.3.The analytic hierarchy process(AHP)was used to construct the judgment matrix,and the weight value of each index was calculated.The comprehensive benefit evaluation sequence of three utilization modes of corn straw in Jilin province was obtained by using fuzzy evaluation method,and the development direction of main utilization of corn straw in Jilin province was put forward according to the final results.4.Based on the concept of circular economy,this paper analyzes the comprehensive benefits of the three utilization methods of corn straw returning to the field,straw feed and straw power generation from the perspective of economic,social and ecological benefits.Finally,according to the benefit evaluation of AHP and fuzzy evaluation,as well as the policy demand in the development process of the corn straw resource utilization industry in Jilin province,this paper puts forward the countermeasures and suggestions in line with the situation of Jilin province.For example,unified planning for the layout of straw industry in Jilin province,and planning for the comprehensive utilization of straw in the medium and long term,pilot projects were carried out in different regions;establishing a relatively perfect system of straw collection,storage and transportation;establishing a mechanism for promoting the transformation of scientific and technological achievements;improve the straw industry chain,forming a new pattern of straw recycling,establish effective policy subsidies and science and technology incentives. |
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