| 摘要 |
PROBLEM TO BE SOLVED: To provide an extremely important, valuable, practical plant growth- controlling method capable of simply carrying out the growth control of plants and enhancing the merchandise value utilizing natural light (solar light) by using a covering material having photoselective transmittance and air permeability. SOLUTION: A photoselective transmitting covering material having air permeability whose A-value of transmitted light expressed by the following equation is <=0.9, A=R/FR (wherein, R is the quantity of photon flux transmission of red light at 600-700 nm based on the standard light source D65; and FR is the quantity of the photon flux transmission of far red light at 700-800 nm based on the standard light source D65). A method of culturing plants using the covering material is provided.
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