Openable roof film greenhouse is a new type double layer greenhouse, it is combined the advantages of general greenhouse, shading house, net house, and use folding flexible covering material prevent rain and wind. Companied with shading system, the greenh
1. Fertilizer and chemical injection through drip and sprinkler irrigation systems.2. Select the appropriate specification of fertilizer Injector depend on the crop andirrigation area. Too big or too small maybe do nothing.