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用化学药剂杀死雄蕊，且不损伤雌蕊的正常受精能力，从而选配、筛选杂交组合和生产杂交种种子，是农作物杂种优势利用的技术途径之一。笔者于１９９８年引进西南农业大学研制的２０％化学杂交剂Ⅰ号，并就不同棉花品种和不同使用浓度进行了试验。１ 对株高的影响喷施化学杂交
It is one of the technical ways to utilize heterosis of crops by killing the stamens with chemical agents without impairing the normal fertilization ability of the pistils, thereby matching, screening the hybrid combinations and producing the hybrid seeds. The author introduced in 1998 Southwest Agricultural University developed 20% chemical hybridization agent Ⅰ, and different cotton varieties and different concentrations were tested. 1 on the impact of plant spray chemical hybridization