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将稻穗置不同种类、浓度的酸溶液中浸泡后，观察其对颖花开放及颖花活性的影响，发现0．5％～10％的甲酸、乙酸和丙酸均能显著地诱导水稻开颖。当甲酸浓度在0．5％－1．5％、乙酸和丙酸浓度在0．5％－2％的范围内对颖花无不良影响。硝酸、盐酸和硫酸等在一定的浓度下能诱导开颖，但同时又对颖花产生伤害。另外，水杨酸、苹果酸等在适宜的浓度下也能诱导水稻开颖。酸可以促使浆片细胞壁的松弛，加快浆片吸水膨胀。酸诱导开颖的时间约为30s，作用部位为浆片；酸的诱导效应可被呼吸抑制剂NaN3所抑制。
After rice ears were immersed in acid solution of different kinds and concentrations, the effect of open rice and spikelet activity was observed. It was found that 0.5% ~ 10% of formic acid, acetic acid and propionic acid could significantly induce rice opening Ying. When the concentration of formic acid is 0.5% -1.5%, the concentration of acetic acid and propionic acid in the range of 0.5% -2% has no adverse effect on the spike. Nitric acid, hydrochloric acid and sulfuric acid in a certain concentration can induce Kai Ying, but at the same time on the spike damage. In addition, salicylic acid, malic acid, etc., at the appropriate concentration can also induce rice Kai Ying. Acid can promote the relaxation of the cell wall of the pulp and accelerate the swelling of the pulp. Acid-induced open time of about 30s, the role of parts of the pulp; acid induction can be inhibited by the respiratory inhibitor NaN3.