| 摘要 |
PROBLEM TO BE SOLVED: To provide a pollen scattering inhibitor effective to a cypress, a white birch and an alder. SOLUTION: The pollen scattering inhibitor for the cypress, the white birch and the alder is composed of a sorbitan oleic acid ester or a sorbitan linoleic acid ester which has an HLB value of 5 or less. COPYRIGHT: (C)2011,JPO&INPIT
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