Application of chemical methods on frost disaster prevention

It is known that accelerating maturation and shortening growth cycle of crops may escape from the damage by early frost disaster． In this study，aimed at the vulnerability of ordinary techniques in frost prevention，different types of chemical regulators are tested to validate their effects on crop growth．The results show that the regulators have more effective both on promoting crop growth rate and shortening crop growing cycle，and furthermore increa sing its yield． It proves to be very significant for alleviating the damage from frost disaster by using chemical regulating methods，and especially it is worthwhile for fur ther research．