The invention discloses a regulating system and method for multilayer shading film of plastic greenhouse with adjustable shading rate. The upper film of the sunshade is a fully transparent film, while the middle film and the lower film are printed with dots, which are interlaced. Through the measurement and comparison of the warm light in the greenhouse, the combined control of the sunshade film is realized. Not only can it adjust its light blocking rate, but it also has a heat insulating effect when there is a certain amount of air in the film.

The present invention concerns an elongated sheet (1) for covering cultivated plants (2), with a basic film (3) of plastic,

wherein a ventilation area (5) extending in the longitudinal sheet direction (L) and having a plurality of ventilation openings (6) is provided in the central area (4) of the basic film (3),
wherein at least one ventilation opening (6) comprises two opposite corners (29, 20) of the ventilation opening (6) in a cross direction (Q) of the sheet (1) extending at least substantially orthogonally to the longitudinal sheet direction (L).

The invention discloses a regulating system and method for multilayer shading film of plastic greenhouse with adjustable shading rate. The upper film of the sunshade is a fully transparent film, while the middle film and the lower film are printed with dots, which are interlaced. Through the measurement and comparison of the warm light in the greenhouse, the combined control of the sunshade film is realized. Not only can it adjust its light blocking rate, but it also has a heat insulating effect when there is a certain amount of air in the film.

The present disclosure provides a film for enhancing the growth of plants in the Cannabaceae family, the film being capable of blocking solar spectrum in the range 430-550 nm. The present disclosure also provides a single- or multi-layer plastic greenhouse film for enhancing cannabis plant growth, where the single- or multi-layer plastic greenhouse film (a) has at least one blue light blocking layer for blocking solar spectrum in the range of 430-500 nm; (b) has a high transmittance for red light in the solar spectrum in the range of 600-750 nm.

A structure for growing plants comprising a main support, vertical supports along the perimeter of the foundation, a perimeter frame connected to the vertical supports, cables connected to the main support, vertical supports and perimeter frame, and an inner and outer shell formed from transmissive panels supported by the cables.

A variable thermal insulation assembly includes at least one array comprising a plurality of sheets of film, wherein the plurality of sheets are in a stacked arrangement and each sheet is bonded to an adjacent sheet along a plurality of longitudinally extending regions such that each pair of adjacent sheets form a plurality of longitudinally extending cavities between adjacent regions of the adjacent sheets, a support frame comprising end elements, wherein the support frame frames the plurality of sheets, wherein support frame is coupled to the array to support the array such that the array may transition between an expanded state in which the array is expanded, and a compressed state in which the array is compressed, within the plane of the frame along the direction perpendicular to the longitudinal axis such that the longitudinally extending cavities are expanded or compressed, wherein in the expanded state, the front edge conforms to one of the second end of the support frame or a second front edge of a second array to form a seal that inhibits air flow between the front edge and the one of the second end of the support frame or the second front edge of the second array.

A multilayered polymeric film for covering an agricultural structure or greenhouse is described herein, wherein the film contains adjacent layers that are capable of delamination from one another. A method of covering an agricultural structure or greenhouse with the multilayered polymeric film can comprise inserting gas between adjacent layers of the film.

A device includes a connected array of cells formed in a stack of flexible sheets. Each pair of adjacent sheets in the stack includes a first sheet and a second sheet bonded together at multiple bond locations. Each sheet has an electrically conductive layer disposed on an electrically non-conductive layer, the conductive layer comprising an electrically conductive non-metal material. Each pair of adjacent sheets in the stack is arranged so that the non-conductive layer of each first sheet is between the conductive layers of the first and second sheets. The cells of the array reversibly transition between an open state and a closed state in response to an electric potential having a magnitude greater than a threshold value applied between the conductive layers of the first and second sheets.

A method for pressurizing an assembly line grow pod system is provided. The method includes arranging a dual wall including an outer wall and an inner wall, controlling, with an air pressure controller, first air pressure in the first sealed area and second air pressure in the second sealed area, and controlling, with a master controller, operations of the air pressure controller. The first air pressure of the first sealed area is controlled to be higher than pressure of an exterior area to the outer wall by a predetermined amount.

A refrigerating cultivation greenhouse is disclosed, including a support pedestal where fixed parts embedded underground. A connection block is fixed on the fixed parts. A greenhouse framework fixed on the connection block. Plastic covering films structured by two layers are disposed on an outer layer and an inner layer of the framework. A refrigeration system includes a refrigerant circulation system, an air box, an air outlet pipe communicating with the air box and interior of the greenhouse, and an air inlet pipe communicating with the air box and interior of the greenhouse. The air inlet pipe may be provided with an exhaust fan. Heat exchange occurs between refrigerant and hot air within the air box. In such a way, the air is conveyed into the air box.