5 ng respectively when the dosage of gibberellin was 0, 8, 13 and 18 g per 667 m2 in the hybrid rice seed production.
由此引发出一个颇有争议的问题,即大剂量(明显超过每667m’8~12g的正常用量)的施用九二①会不会引起F;代幼苗产生类似恶菌病的徒长苗?因为近些年来,有些地方的杂交稻中恶苗病徒长苗明显增多,甚至造成严重损失。
Bakanae disease infected leggy rice seedlings in our experiment in 1998 showed three symptom display peaks in total at three leaf seedling stage, early jointing stage and early earing stage.
水稻恶苗病徒长苗有 3个显病高峰 :稻苗 3叶期、拔节初期、破口初期 ;徒长苗又有明显的症状隐蔽现象。