| Plastic film mulching technology in 1970s,after the rapid spread in Europe and the United States,Japan and other countries.The application of plastic film mulching can make wet crop northward 2-4 dimensions,which extend the frost free period of 10?15 days,improve water use efficiency in Dryland 30%-50%.Since 80s,our country has adopted the technology of plastic film mulching.By 1988,the coverage of plastic film has reached 22 million 770 thousand hectares,ranking first in the world.In Shanxi Province,the dry land area is large,the annual precipitation is low,the grain yield is generally low,and the farmers' income is slow."Millet hill water permeability plastic film technology demonstration" for the mountains,Banpo areas peasants,especially opens up a new way of characteristic agricultural industrialization poverty alleviation for the poor mountain farmers,is a dry land "water" of the modern agricultural planting new model test shows that the application of this technology,dryland yield up to 450?800 kg.Compared with the traditional planting yield doubled.With the promotion of the film mulching technology,covering various types of equipment have also come out,this bunch type film spreading and seeding machine development and create a good opportunity.This paper mainly discusses the design and calculation of performance and seed type film spreading and seeding machine main technical parameters,the machine can be hoisted by 29.4 44.1KW tractor,controlled by hydraulic pressure lifting,in order to adapt to the "water permeability plastic" and "VVV"type planting mode,can shallow rotation,ditching,paving,soil,film sowing,repression and project design.The performance and production test indicated that the planter in the field planting operation in good condition,the performance indexes of the seeder have reached the national standard requirements,stable and reliable performance,to meet the requirements of production,has good economic and social benefits. |
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