化学调控主要是指利用植物生长调节剂,影响植物的生长发育过程,达到改良品质,提高质量和产量,便于管理的目的。目前化学调控技术在园艺生产上的应用范围主要有以下几个方面: 1.在繁殖中的应用 用0.5—1ppm的赤霉素可促进发芽、打破种子的休眠;用25—100ppm的吲 Chemical control mainly refers to the use of plant growth regulators, affecting plant growth and development process, to achieve improved quality, improve quality and yield, easy to manage. At present, the application of chemical control technology in horticultural production mainly includes the following aspects: 1. Application in reproduction GA3 can promote germination and break dormancy of seeds with 0.5-1ppm GA3;