共查询到19条相似文献,搜索用时 93 毫秒
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通过对黑龙江省齐齐哈尔市谷糜田双斑长跗萤叶甲形态特征、发生危害情况、生活习性及危害特点的观察研究,初步分析了该虫趋重发生的原因,并提出相应的防治对策。 相似文献
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双斑长跗萤叶甲[Monolepta hieroglypkica(Motschulsky)],属鞘翅目,叶甲科,又名双斑萤叶甲。该虫在北疆奎屯地区棉花上的发生基数逐年增加。2010年6月下旬在玛纳斯县平原林场一块玉米田发现双斑长跗萤叶甲的成虫,发生较重,平均百株有虫5头.单株最高14头,危害株率8%。近年来.双斑萤叶甲在玛纳斯县玉米病虫害调查中并未发现.如果不被重视. 相似文献
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双斑长跗萤叶甲发生危害特点及防治措施 总被引:6,自引:0,他引:6
双斑长跗萤叶甲为害玉米、大豆、向日葵、马铃薯等多种作物的叶片和花穗.笔者通过7 a间的观察和研究,发现该虫属高温、干旱型突发性害虫,并总结出一系列极为有效的防治措施. 相似文献
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【目的】筛选对双斑长跗萤叶甲Monolepta hieroglyphica (Motschulsky)成虫有生物活性的植物挥发物。【方法】通过气相-质谱联用仪(GC-MS)对棉花和玉米挥发物进行鉴定及定量分析,采用触角电位技术 (EAG)测定双斑长跗萤叶甲雌、雄成虫对10种挥发物的触角电位反应。【结果】双斑长跗萤叶甲雄虫对α-长叶蒎烯、α-红没药醇、α-蒎烯、月桂烯、3-蒈烯、1,3丁二烯、棕榈酸反应较为明显;雌虫对10种挥发物部分浓度均有明显反应。【结论】双斑长跗萤叶甲雄虫对3-蒈烯反应最敏感,雌虫对α-红没药醇反应最敏感。 相似文献
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双斑萤叶甲成虫的取食选择性研究 总被引:2,自引:0,他引:2
为综合治理双斑萤叶甲的危害,拓展新的防治途径,对双斑萤叶甲成虫的取食选择性进行研究。试验中,采用四臂嗅觉仪测定和田间试验方法研究,结果表明,在6个玉米品种中,双斑萤叶甲成虫对垦粘1号的选择性强,对庆单4和四单19的选择性弱,在供试的2种植物中,对紫花苜蓿的选择性强。总体表现为双斑萤叶甲成虫对紫花苜蓿的选择性强,垦粘1号次之,庆单4和四单19弱。 相似文献
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Yizhi Feng Bu Tao Minhao Pang Yingchao Liu Jingao Dong 《Frontiers of Agriculture in China》2011,5(4):497-503
To investigate the frequency of occurrence and the concentrations of aflatoxins (AFs), deoxynivalenol (DON), zearalenone (ZEN)
and fumonisins (FBs) in naturally infected maize, 25 samples of maize collected from fields in Hebei Province, China, were
analyzed by high-performance liquid chromatography (HPLC). The maize samples were found to be frequently contaminated with
DON (68%), ZEN (60%) and FBs (32%) in the range from 28 to 2533 μg/kg, 60 to 1239 μg/kg and 150 to 4480 μg/kg, respectively.
The average concentration found for DON, ZEN and FB1 + FB2 were 605, 238 and 418 μg/kg, respectively. The average concentration
of DON (605 μg/kg) in our samples was below the maximum tolerable limit of 1000 μg/kg set as the Chinese standard for maize,
while ZEN (238 μg/kg) was almost four times as high as the maximum tolerable limit of 60 μg/kg. The overall level of FB (FB1
+ FB2) contamination was relatively low, with an average concentration of 418 μg/kg in 32% (8 of 25) of maize samples from
Hebei. AFs were not detected in any of the tested samples. This is the first report on the natural occurrence of multimycotoxin
in maize in China. 相似文献