| 摘要 |
PROBLEM TO BE SOLVED: To provide a chemical-free soil cultivation method enabling chemical-free and inexpensive cultivation of various kinds of plants (crops) using quick-built facilities. SOLUTION: The chemical-free soil cultivation method for plants comprises the following process: constructing a framework for creating a cultivation space on the ground; covering the outside of the framework with a near-ultraviolet protection film or sheet to form an outer film; providing insect net at the inside of the framework to form an inner film; spreading a film or a sheet preventing groundwater from seeping up (hereinafter referred to as a waterproof sheet) so as to have a width wider than that of the framework; providing a mechanism for rapidly draining the rainwater falling on the surface of the outer film to the outside of agricultural field (hereinafter referred to as a drainage mechanism); and laying pipes or tubes used for watering, fertilizer application and also ventilation. COPYRIGHT: (C)2006,JPO&NCIPI
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