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调查了牡丹江丘陵半山区大豆食心虫种群数量的动态变化及有关气象因素,并对化学防治与生物防治的效果进行比较。结果表明:2011年该区大豆食心虫始发期在7月下旬,终结期在8月末,持续时间约为35 d,高峰期出现在8月中下旬;随着温度的升高,食心虫数量有增高趋势,当温度达到一定程度后食心虫的数量波动幅度明显减小;化学防治与生物防治的单株粒重、虫粒数、虫食率、单株粒数在1%显著水平上达极显著差异,生物防治的单株粒数和单株粒重分别是化学防治的1.16和1.20倍,而生物防治的虫粒数和虫食率分别是化学防治的71.4%和61.3%。因此,生物防治可以有效降低食心虫虫食率,提高大豆品质和产量。
The population dynamics of soybean borer population and the related meteorological factors were investigated in the mid-mountainous area of Mudanjiang, and the effects of chemical control and biological control were compared. The results showed that the starting period of soybean borer in this area in the end of July was in late July, the end of August was about 35 days, and the peak appeared in the middle and late August. As the temperature increased, the number of moth worms increased When the temperature reached a certain level, the fluctuation of the number of moth worms decreased obviously. The grain weight per plant, worm population, worm food rate and grain per plant in the chemical control and biological control reached extremely significant differences at 1% , The number of single plant per plant and the weight per plant of biological control were 1.16 and 1.20 times that of chemical control respectively, while the number of insect control and worm control of biological control were 71.4% and 61.3% respectively of chemical control. Therefore, the biological control can effectively reduce the heartworm insect feeding rate, improve soybean quality and yield.