Chinese name: GA GA: new green tech products English name: gibberellin GA4 +7 referred tomatoes, regulate growth, improved cotton boll rate GA, is widely present in a class of plant hormones. Its chemical structure belonging to diterpenoid acids, those derived from the tetracyclic skeleton. Can stimulate the growth of leaves and buds. GA known species are at least 38 species. GA used in agricultural production, have better results in some respects. Such as increasing the yield seedless grapes, potatoes break dormancy; when brewing beer, maltose was prepared with GA3 used to promote seed germination of barley; When the late rainy and cold heading slowly when treated with GA can promote heading; or Hybrid Rice Seed Production in regulating the flowering flowering to enable parents to meet and so on.