| Nutrient lump transplanting is a popular sowing form in recent years,with cost-saving effects such as time saving,labor saving and medicine saving.Seedling management of nutrient lump in greenhouses is transplanted to facilitate the management and close planting of nursery and the increase of corn production.In the realization of the role of precision agriculture,the cultivation techniques of nutrient lump are similar to the live broadcast technology of rice seed ropes,transplantation of nutrient lump in space can be achieved without restrictions on soil conditions,simplification and lightening of field operations.Compared with the traditional machine,this machine is characterized by suppressed nutrient lump no need to hold the plate,and good stability of the nutritional species.Corn straw nutrient lump forming machine is used to provide power for the functions of various mechanisms and seeding device to achieve seeding.The small size of the machine is very convenient for production,only need people to put the material into the material box.The nutrient lump pressed by this machine are highly dense and free of chemical fertilizers,the corn stalk nutrient lump enclose the corn seeds in the matrix,the matrix can provide a certain degree of nutrition for the growth of corn and improve the soil properties and improve the fertilizer efficiency,from the perspective of precision agriculture or from the sustainable development of resources and the environment,this is a very promising research approach.The research results can be briefly summarized as follows:(1)The paper analyzes the research status of the corn stalk nutrient lump molding machine and seedling nursery,and determines the overall structure,transmission scheme and main design parameters of the corn stover nutrient lump machine.(2)The crank-slider mechanism,turbine-like mechanism,cam mechanism,seed input device and pressure head device of the corn stalk nutritional seedling machine were designed;the software was used for solid modeling to determine the position of the transmission components.A physical model diagram of a nutritional seedling plant.(3)The key components of the corn stalk nutrient lump molding machine include the static mechanism analysis of the cam mechanism and the pressure head device of the turbine-like mechanism,and the points with larger fatigue stress are obtained through the stress analysis chart and solutions are taken to solve the problems;An EDEM simulation analysis was performed to analyze the matrix agitation characteristics.(4)Compression ratio,compression time interval of pressure head and pressure head taper are the experimental factors,and the compressive strength and water absorption swelling rate of the molded nutrient species are used as experimental indicators to optimize the processparameters of the formed nutrient species.The results and analysis of variance were performed to find out the best parameter combination and the order of the factors affecting the orthogonal test.The significance of the experimental factors was analyzed,and the best process parameters were verified,durability was measured for nutrient species pressed with a corn stalk vegetative seedling machine,and the quality of the nutritional seed mash was studied as well as storage requirements.Durability includes resistance to deformation,crush resistance and water absorption.Anti-deformability reflects the use and storage requirements of nutrients;resistance to crushing is closely related to the handling of nutrients in actual conditions;water absorption is closely related to the actual conditions of storage of nutrients.(5)According to the design model of the forming machine and the optimization result of compression ratio,pressure head compression time interval and pressure head taper obtained by orthogonal test,the corn straw nutrition lump forming machine is made.(6)The germinating characteristics of the seeds pressed by the best combination of orthogonal test were tested.The results showed that corn seeds could germinate and germinate faster than the normal soil. |
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