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一、在大豆分枝期和花期分别喷施2,3,5——三碘苯甲酸不同溶液浓度均能抑制顶端优势,增加分枝,抑制的程度与浓度成正比,喷施后一周到十天内表现得最为明显。二、不论在分枝期或花期喷射2,3,5——三碘苯甲酸0.02％溶液的大豆植株,叶面积、干物重、净光合生产率以及呼吸强度等都有显著的增加。三、处理后的植株,在始花期茎叶内氮和淀粉的含量高于不处理,提高了蛋白质和醣的生成;在盛花期间茎皮内还原糖和蛋白质氮的含量百分数亦均有提高,缓和了当时同营养水平的矛盾,促进水解作用;在结莢鼓粒期处理的,茎叶内蛋白质含量较不处理的下降缓慢,同时豆莢内淀粉、蛋白质氮和总氮的含量相应地增加。四、喷射0.02％2,3,5——三碘苯甲酸溶液的大豆植株,单栋开花数增加12～30％,单株粒数增加27～85％,因而单位面积产量处理者比对照增产15～16％。五、喷施溶液浓度以0.02％的效果最为显著;喷射1次与2次,盛花期与分枝期喷射,其效果无显著差異。
First, in the soybean branching and flowering were spraying 2,3,5 - triiodobenzoate concentrations of different solutions can inhibit the top edge, increase the degree of branching, the degree of inhibition is proportional to concentration, after spraying one week to ten The most obvious manifestation of days. Second, both the leaf area, dry matter weight, net photosynthetic productivity, respiration intensity and so on were significantly increased in both shoots and flowering shoots of 2,3,5-triiodobenzoic acid 0.02% solution. Thirdly, the content of nitrogen and starch in the stems and leaves of the treated plants was higher than that of the untreated ones, which increased the production of protein and sugar. The percentages of reducing sugar and protein nitrogen in the stem bark during the full flowering period also increased, Alleviated the contradiction with the nutrition level at that time, and promoted the hydrolysis. The protein content in the stems and leaves decreased slowly at the pod stage and the content of starch, protein nitrogen and total nitrogen in the pods increased correspondingly. Spraying 0.02% 2,3,5 - triiodobenzoic acid solution of soybean plants, single-flowering increased by 12 to 30%, grain number per plant increased 27 ~ 85%, so yield per unit area than the control yield increase 15 ~ 16%. Five, spray solution concentration of 0.02% of the most significant effect; spray 1 and 2 times, full bloom and branching injection, the effect was no significant difference.