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赤霉素在杂交水稻制种中常用作花期调节剂。为了促进父母本花期相遇及提高父本株高以利授粉,已使用多年。早期每亩约使用赤霉素结晶1～2克。由于赤霉素能延长叶片功能,提高光合强度,增加光合积累,促进碳水化合物向籽粒运输,并能使节间伸长、花期集中,提高结实率,各地制种工作者为了提高杂种产量,逐年增加用药量,某
Gibberellin is commonly used as a flowering regulator in hybrid rice seed production. It has been used for many years in order to promote parental flowering encounters and increase parental plant height for pollination. Early use of gibberellin crystals per acre about 1 to 2 grams. Because gibberellin can extend the function of leaves, increase photosynthetic intensity, increase photosynthetic accumulation, promote carbohydrate transport to grain, and can make internode elongation, flowering focus and improve the seed setting rate. Seed production workers in all regions in order to increase hybrid yield increased year by year Dosage, a