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Cultivated fields the device pests and which covers and plants that of protecting plants from an avian which has been situated such that they cells and realizes easy and earth and custody easy plant cultivation electronic name card provided insect net, plant cultivation according to one embodiment of the device electronic name card cultivated in the fields insect pests and which covers and plants that of plant protection from an avian which has been as insect, plant said tunnels to be placed inside the dough to form air cell structure is arranged apart from each other a plurality of arcuate support frame and the; said plant to provide protection to said support frame is formed on the substrate to cover, both sides along the longitudinal direction a first end and has guide portions a net member and; said net member guide section the cross sections both while said guide section has a body with a guide wire; said net member the front end and rear end of said guidewire down on the lower side of the guide anchored into the ground together an area revealed by a a pair of end the fixing pin is, said guidewire while to maintain tension to taut secured fixing pins end said adjusting the length the net member of an automatic transmission is provided to adjusting the length characterized in that.