论文部分内容阅读
2002年和2003年,在吉林省柳河县绿色大米生产基地,开展了应用性信息素诱捕法防治越冬代水稻二化螟Chilo suppressalis的试验。与对照区相比,2002年和2003年两年诱捕区诱蛾量分别下降84.54%和83.75%,雌虫交配率分别下降54.10%和47.67%;同时,诱杀区二化螟卵孵化率下降25.50%,卵块密度也显著降低。2002年二化螟雌雄性比由对照区的1.14上升为诱捕区的3.96,而2003年由1.12上升到3.84;诱杀区二化螟幼虫为害率,无论是枯鞘、枯心,还是白穗,也较之对照区显著下降,造成稻谷产量损失也明显降低。通过上述一系列评价指标表明性信息素诱捕法能有效控制东北越冬代水稻二化螟,可为东北绿色大米的可持续生产提供技术支持。
In 2002 and 2003, a pilot test was conducted to control Chilo suppressalis overwintering generation of rice stem borer (Chilo suppressalis) in the green rice production base of Liuhe County, Jilin Province. Compared with the control plots, the number of trap moths in trapping area decreased by 84.54% and 83.75% respectively in 2002 and 2003, while the female mating rates decreased by 54.10% and 47.67% respectively. At the same time, the hatching rate of squarrons decreased by 25.50% %, Egg mass density is also significantly reduced. In 2002, the ratio of sexes of Chilo suppressalis ascendens increased from 1.14 in the control area to 3.96 in the trapping area, while it rose from 1.12 to 3.84 in 2003. The rate of larvae infestation caused by the stem borer was no significant difference Also significantly decreased compared with the control area, resulting in a significant loss of rice yield. Through a series of evaluation indexes mentioned above, the sex pheromone trapping method can effectively control the overwintering generation of rice stem borer in northeast China and provide technical support for the sustainable production of green rice in Northeast China.