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(1)用替代试验研究了燕麦(Aneva sativa)和箭舌豌豆(Vicia sativa)在混播中的竞争相互作用。为了测定密度和混播比例对两种植物在混播条件下的行为影响,田间试验设为5个混播总密度和5种混播比例,共测定了5次。(2)方差分析表明,相对总生物量(RYT)和竞争平衡指数(CBI)对总密度,混播比例和生长时间的反应敏感。总密度对RYT 和CBI 的影响高度显著。在大多数情况下,混播比例对RYT 和CBI 的影响不显著。(3)本文研究的结果表明,持续时间对RYT 和CBI 具有很强的影响。在第1次测定时,RYT 值接近1而CBI 值接近0,这一事实表明,种间无竞争或互惠作用。而在生长旺盛期,种间竞争较为剧烈。(4)本研究结果表明,箭舌豌豆的生长严重受到燕麦的抑制作用,这说明箭舌豌豆在与燕麦混播时表现为竞争上的弱者。
(1) Alternate experiments were conducted to study the competitive interactions of Aneva sativa and Vicia sativa in mixed-sowing. In order to determine the effects of density and mixing ratio on the behavior of the two plants under mixed conditions, the field trials were set at 5 total mixed-density and 5 mixed-sowing ratios for a total of 5 measurements. (2) An analysis of variance showed that relative total biomass (RYT) and competitive equilibrium index (CBI) were sensitive to the total density, mixing ratio and growth time. The impact of total density on RYT and CBI is highly significant. In most cases, the effect of mix ratio on RYT and CBI is not significant. (3) The results of this study show that duration has a strong effect on RYT and CBI. The fact that at the first measurement the RYT value is close to 1 and the CBI value close to 0 indicates that there is no competition or reciprocity between the species. In the vigorous growth period, interspecific competition is more intense. (4) The results of this study showed that the growth of Agkistrodomelata was severely inhibited by oats, which indicated that Agkistrodon hippocastanum was the competitive one when mixed with oats.