摘要： 在杂交水稻温室秧苗1叶1心期和寄秧15d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%。

关键词: 烯效唑, 杂交水稻, 温室秧苗, 形态, 生理特性, 产量

Abstract: To spray uniconazole of 50～200 mg⋅L^-1 at I leaf stage and after 15 days the rice sprouts were transplanted to the temporary mursery,the sprout height was decreased,the weight of the plant stem,tillering,and the number of total roots and white roots also were increased; the foot stem became wider and also the leave widered and shortened; the system of root activity increased; the soluble sugar,protein,chlorophyll content and POD activity in the leaves and the rate of photosynthesis all enhanced,while the rate of grain filling in later stage and the number of effective panicles increased.Among them the best was to spray uniconazole of 100 mg⋅L^-1.The results showed the yield increased 18.09% in a small area than control in 1996,it increased 16.20% in a large area in 1997.

Key words: Uniconazole, Hybrid rice, Sprout in green house, Morphology, Physiological characteristic, Yield

中图分类号: 

• S511.043