1. Characteristic 1: it is composed of a series of dust components, each of which contains (a) one or more internal particles composed of composite powder, which is composed of a cyclopropane compound encapsulated by a molecular encapsulation agent； and (b) the first coating. Including water-insoluble materials； and (c) a second layer including water-insoluble polymers or water-resistant films. Claim 2: a component consisting of a series of dusts, each of which comprises,(a) One or more internal particles composed of composite powder, consisting of a cyclopropene compound encapsulated by a molecular encapsulation agent； each internal particle or particles comprises the first coating composed of a substance insoluble in water； (b) The second coating includes a water-insoluble polymer or water-resistant film. 13. Claim 3: the composition in accordance with claim 1, that is, the water-insoluble substance in the first group of coating includes fatty compound or cerium material. Claim 9: the composition of claim 3,The fat or wax compound in the first coating includes at least one hydrogenated soybean seed oil, hydrogenated cottonseed oil, hydrogenated sunflower oil, microcrystalline wax, polyethylene homogeneous wax, natural or synthetic wax, including beeswax and Brazil wax. Claim 10: the component of claim 1, wherein the polymer insoluble in the second layer of waterproof membrane or water includes propylene polymer, hired cellulose, polytetrafluoroethylene,Or a combination of both. 19. Claim 22: a suspension composed of a water medium and a collection of particles, wherein each powder contains "(a) one or more particles containing complex powder, and the composite powder is composed of cyclopropane compound sealed by a molecular encapsulation agent； (b) The first coating is composed of a substance insoluble in water；(c) The second coating includes a water-insoluble polymer or water-resistant film. Claim 24: a method of treating plants or plant components, including as
