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赤霉素防止棉花落铃的小型试验,1966年以来已有报导,但结合农业生产中不同棉花品种、不同栽培方式、棉田管理措施以及喷施方法等进行大田试验,未见报导。因而赤霉素在棉花生产上尚未大面积推广使用。为此,我们进行了以下试验。材料和方法试验在宝鸡县宁王公社联合大队三个生产队的四块棉田上进行。试验设置和点喷赤霉素的情况详见下表:
The small scale test of gibberellic acid to prevent cotton from falling off has been reported since 1966. However, it has not been reported that field trials of different cotton varieties, different cultivation methods, management practices of cotton fields and spraying methods are not reported. Gibberellin production in cotton has not yet large-scale promotion and use. To this end, we conducted the following experiment. Materials and Methods The experiment was carried out on four cotton fields of three production teams of the Ning Wang Commune of Baoji County. The experimental setup and spot gibberellins are detailed in the table below: