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在杂交水稻温室秧苗1 叶1 心期和寄秧15 d 后各喷施1 次50 ～200 mg·L- 1 烯效唑,可使苗高降低,植株干重、分蘖和总根数、白根数增加,茎基部变宽,叶片变宽变短,根系活力增强,叶片的可溶性糖、蛋白质、叶绿素含量及过氧化物酶(POD) 活性、光合速率提高;后期灌浆速率增大,有效穗增加。其中以喷施100 mg·L- 1 处理效果最好,1996 年小区试验比对照增产18-09 % ,1997 年大区对比试验较之对照增产16-20 % 。
In the hybrid rice paddy leaf greenhouse 1 seedling 1 and 15 days after the seedlings sprayed once each spraying 50 ~ 200 mg · L-1 uniconazole, can reduce height, plant dry weight, tillering and total root number, white root The number of stems broadened, the leaves widened and shortened, and the root activity increased. The content of soluble sugar, protein, chlorophyll, peroxidase (POD) activity and photosynthetic rate of leaves increased. The grain filling rate increased and the effective spike increased . Among them, spraying 100 mg · L -1 had the best treatment effect. In 1996, the plot test increased yield by 18-09% compared with the control. In 1997, the comparative test in the large area increased by 16-20% compared with the control.