【摘要】 在羊角辣椒发育的苗期、蕾期、花期和果期,分别用平均0.12ppm臭氧前后间隔一定时间熏气两次。结果看到,任何一个发育时期,臭氧都能抑制辣椒的光合作用。各时期相对抑制程度为,苗期>花期>蕾期>果期,抑制的最大值为56.30％,最终导致产量比对照减少48.86％。产量的损失,并非仅由抑制光合作用引起,而是一种多因素的综合效应。O_?对光合作用的抑制,在停止熏气17小时后仍未解除,表现出一定的后效应。更多还原

【Abstract】 The plants of hot pepper at seedling, flower bud, blooming and fruiting stages were fumigated twice with 0.12 ppm of O₃ at 17 hrs intervals. The first fumigation was carried out for 7 hrs and the second was made for 24 hrs. It was concluded that the O₃ could inhibit photosynthesis of hot pepper at any development stage. The inhibited degree of photosynthesis differed in different stages, i. e. seedling>blooming>flower bud>fruiting stage. The maximum volume of inhibition was 56.30%. The photosynthesis inhibition resulted in yield decrease 48.86% in comparison to control. This yield loss was comprehensive affects caused not only by photosynthesis, but also by various factors. It was also observed in this experiment that the inhibition of O₃ on photosynthesis of hot pepper did not disappear at seventeenth hours after stopping fumigation, expressing a certain after-action.更多还原