为确定1.2％烟碱·苦参碱乳油防治悬铃木方翅网蝽的效果,筛选适宜的稀释倍数,并为其实际应用提供依据,开展了喷雾施药防治悬铃木方翅网蝽田间试验.调查发现,1.2％烟碱·苦参碱乳油2 000倍液喷雾处理的速效性和持效性最优,药后1d和7d的平均防效分别为97.28％和99.71％,且不污染环境,正常施药后不产生药害,适合大面积推广应用.

为明确松毛虫赤眼蜂产品的低温储运时间,本研究在两种恒温恒湿储存条件下,对以柞蚕卵为寄主的非滞育的发育虫态为幼虫期的松毛虫赤眼蜂产品,进行了恒温恒湿储存条件研究.结果 表明,在2种储存条件下,各项指标均随储存时间的延长不变或降低.在温度(3±1)℃、相对相对湿度(65±5)％条件下,松毛虫赤眼蜂产品贮运时间不宜超过60 d.在温度(13±1)℃、相对湿度(70±5)％条件下,贮运时间不宜超过30 d.

百合(Lilium spp.）属百合科(Liliaceae)百合属(Lilium)植物,因其花朵硕大芳香,花姿优美、寓意吉祥而越来越受到世界花卉市场的青睐.全世界的百合约有90多个品种,其中起源于我国的就有47个种,18个变种.

The study was conducted to estimate the pollen viability of six genotypes and optimum storage conditions.Pollen grains were stored in four storage temperatures and their viability was assessed by in vitro germination.The results showed that pollen of 'Justina Zantrijus','Sheila','Elite' and 'Lilium regale' storaged inside of desiccator at 4℃ was the suitable condition,which ability of germination could keep 84,35,28 and 84 days separately;pollen of 'Brunello' stored outside of desiccator at 4℃ was the best way,which ability of germination could keep 70 days;however,the best storage condition of Lilium davidii var.unicolor pollen was stored outside of desiccator at-18℃,which vitality could keep 49 days.With the storage time increasing,the germination rate of lily pollen gradually decreased,but there were distinctly rising in some periods of storage process.