摘要
为减少烟草田化学药剂使用,提高烟叶品质等级,本试验采用单因素试验设计,设5个茧蜂和烟蚜比例处理,处理A~E蜂蚜比分别为1∶5、1∶10、1∶15、1∶20和1∶25,调查不同蜂蚜比条件下的单株蚜量、寄生率和相对防效。结果表明:不同蜂蚜比条件下平均单株蚜量、寄生率、相对防效呈先升高后降低的趋势。放蜂后第15天,单株烟蚜量达到最低值,处理A、B烟蚜量分别为86.1和98.4头;寄生率达到最高值,处理A寄生率最高,为63.9%,其次是处理B,寄生率为59.0%;蜂蚜比和最高寄生率之间拟合方程为y=-21.493x2+7.081 4x+0.083 5;相对防效达到最大值,处理A相对防效72.0%,处理B相对防效75.2%。由此可知,蜂蚜比1∶5和1∶10条件下可有效控制烟蚜数量,同时有较高的寄生率和相对防效。
In order to reduce the use of chemical agents in tobacco field and improve the quality of tobacco leaves,a single factor design was adopted in the experiment,and the test factor was Aphidius and aphid ratio.A total of 15 sheds covered with 50 mesh insect-proof nets and 1 blank control shed without Aphidius were set,with A total of 5 treatments∶A(Aphidius∶aphid=1∶5),B(Aphidius∶aphid=1∶10),C(Aphidius∶aphid=1∶15),D(Aphidius∶aphid=L∶20) and E(Aphidius∶aphid=1∶25),with 3 replicates for each treatment.The number of aphids per plant,parasitism rate and relative control effect were investigated.The results showed that the average amount of aphid per plant,the parasitism rate and the relative control effectiveness were firstly increased and then decreased under different aphid ratio conditions.On the 15th day after releasing the Aphidius,the aphids per plant reached the lowest value,86.1 aphids in treatment A and 98.4 aphids in treatment B.The parasitism rate in treatment A was the highest,63.9%,followed by 59.0% in treatment B.The fitting equation between the wasp aphid ratio and the highest parasitism rate was y=-21.493x2+7.081 4x+0.083 5.The relative control effect reached the highest value,and the relative control effect of treatment A was 72.0%,and that of treatment B was 75.2%.
作者
李青超
王立达
赵秀梅
兰英
刘悦
韩业辉
刘洋
LI Qing-chao;WANG Li-da;ZHAO Xiu-mei;LAN Ying;LIU Yue;HAN Ye-hui;LIU Yang(Qiqihar Branch,Heilongjiang Academy of Agricultural Sciences,Qiqihar 161006,China)
出处
《黑龙江农业科学》
2021年第5期27-30,共4页
Heilongjiang Agricultural Sciences
基金
黑龙江省农业科学院院级课题(2019CGJL011)
黑龙江省农业科学院“农业科技创新跨越工程”专项-设施蔬菜主要虫害绿色高效防控技术研究(HNK2019CX10-18)。
关键词
烟蚜茧蜂
烟蚜
蜂蚜比
寄生率
相对防效
Aphidius gifuensis
Myzus persicae
ratio of Aphidius and aphid
parasitism rate
relative control effect
