摘要
1988和1989年在中肥棉田上,采用罩笼控制,进行了2代棉铃虫对棉株花蕾的危害和同步模拟摘蕾试验,旨在确定受害株在生殖器官上的补偿时期和功能。在7月17日和9月10日进行2次株式图调查,经过20株240个果枝统计分析各节位上的结铃情况,各果枝在1～2个节位上的结铃数,各处理区均低于对照,而在3～5个节位的结铃数,各处理区均比对照区显著增加,个别处理小区与对照相比,t 检验的差异达到极显著水准。
In 1988 and 1989,damages and simultaniety of artificial simulation by the second generation of Heliothis armigera was studied in the caged plots on soil with sedium-level fertility to determine the compensation period and function of the injured plants on its reproductive organs.Plant development patterns were in investigated on July 17 and September 10.Analyses of fruit-setting pattens of 240 fruiting branches of 20 plants showed that the number of fruits at the first to second nodes in all treated plots was lower than that in the control,but that at the third to fifth nodes in all treated plots was much higher than that in the control.In comparision with the control,the resutls of t-test indicates that the number of fruits at the third to fifth nodes was significantly higher only in a few treated plots.
出处
《棉花学报》
CSCD
北大核心
1990年第2期87-95,共9页
Cotton Science
关键词
棉铃虫
花蕾
危害损失
棉花
Heliothis armigera
cotton square-flower
crop damage
