Investigation And Evaluation On The Utilization Of Crop Straw In Changzhou City

Crop straw as agricultural by-product has been neglected by people for a long time.Until recent years,Corp straw open burning caused environmental pollution and security risks.By this way crop straw taken seriously by people.As renewable energy crop straw has some characteristics that other renewable energy doesn't have.It can be stored and transported.The production of crop straw in our country is also ranked in the forefront in the world every year.But the use of crop straw is relatively single in our country.Mechanized returning application of straw is the most common way of crop straw utilize ways in our country.Because the crop straw resources are seasonal and enormous,so that crop straw is still surplus and cause environmental pollution.The resources of crop straw in Changzhou rich,and the types of enterprises which can use crop straw is rich also.But it still have a part of crop straw haven 't be effectively utilized in Changzhou,this is a waste of resources and it would cause environment pollution.Therefore,to know the quantity and utilization of crop straw,so that to put forward effective countermeasures and suggestions for using crop straw.Through field survey,statistical analysis,typical case analysis,Logistics multiple evaluation model and bibliography retrieval we can clear the characteristics of crop straw resources.Analyzed and evaluated the utilization of crop straw and its influencing factors in Changzhou.Existed the problems in the utilization of crop straw.Puts forward the ways and measures for the comprehensive utilization of crop straws.It provided theoretical basis and reference for the utilization of crop straw in Changzhou.The main achievements of the thesis are as follows:(1)The amount of crop straw in Changzhou is stable.The total of crop straw are around 160 million tons,the amount collected in about 120 million tons that equivalent to 58 million tons of standard coal generated heat.The density of crop straw is 3.677 tons/ha per and 704.583 kg/person.The crop straw resources are mainly concentrated in Liyang City.Accounting for 50%of the total crop straw in Changzhou.Crop straw resources are mainly concentrated in summer and autumn.It is mainly composed of rice straw and wheat straw,rice straw accounted for 67.27%,wheat straw accounted for 23.87%.(2)The crop straw resource utilization can achieve a certain income.But there is also many problems.Mechanized returning application of straw can achieve 50 yuan/mu income;Energy using can realizes 30-50 yuan/mu income.But business incoming is not obvious,capital returns slowly and need the government policy and financial support;Making straw become edible fungus base material of can achieve 100-350 yuan/tons revenue.(3)It shows that farmers itself,the basic situation of the rural,economic environment factors has a significant impact on crop straw utilization.The predicted value of the model established by these factors is coincide with actual value.The businesses,the facilities,the way of straw using,government ban on burning,the degree of government propaganda have significant impact on crop straw utilization.(4)The development proposals and Countermeasures for utilization of crop straw resource in Changzhou is that constructe small crop stalks of energy enterprises,especially in small crop straw curing fuel companies.At the same time,we should vigorously support the crop straw storage and transportation system construction,add the industry funding and policy support.In addition,we should build crop straw made into based materials and small industrial raw materials.This can effectively use the resources of low density,small amount of resources of crop straw resources.It should also improve the scientific and technological support and propaganda of the utilization of agricultural resources,so that to improve the level of utilization of agricultural resources.