GA3对三色堇观赏性状的调控

三色堇在长沙地区栽培 ,春节前夕不能进入盛花期。为了解决此问题 ,用 4万单位 GA3辅施 P、K肥进行调控。试验表明 ,三色堇盛花期提前 ,可在春节前夕进入观赏期 ,且花蕾数增多 ,花朵数增加 ,花径大小不变。由于观赏终止期基本一致 ,客观上处理比对照的观赏期延长近 1倍。经处理后三色堇株高虽有所增加 ,但由于辅施 P、K肥增强了植株茎杆的机械支撑能力 ,克服了因植株增高而引起倒伏的缺陷

Regulation of the Decorative Characters of Viola tricolor by Spraying GA3

Viola tricolor being cultivated in Changsha district can''t come into decorative period on the eve of the Spring Festival.In order to solve this problem,the experiment that Viola tricolor is sprayed with 40,000 units of GA₃ with phosphate and potash fertilizer has been conducted.This study showed that the decorative period appears ahead of time,so the period of appreciation comes at the eve of the Spring Festival,the numbers of flower and flower buds increase remarkably,but flowers'' diameters have no change.The blooming period of the treatments protracts approximately 2 times that of the contrast objectively since the telophase of flowering of the treatment is nearly the same as the contrast.Although the heights of the treatment had increased,the Viola tricolor didn''t fall down because the treatment being fertilized with phosphate and potash fertilizer can improve the intensity of the supporting ability of the stems,so the l odging caused by GA₃ has been overcame since then.