共查询到19条相似文献,搜索用时 93 毫秒
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栎舞毒蛾是一种危害栎树的食叶性害虫,1996年在吉林省延边自治州大面积发生,根据该虫的生物学特性,采取树干基部喷药的方法进行防治,害虫死亡率达95%以上,这种方法简易易行,对环境影响小。 相似文献
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舞毒蛾是世界性害虫。用2.5%溴氰菊酯乳剂、40%久效磷乳油和40%氧化乐果乳油,对舞毒蛾幼虫进行喷杀试验,平均死亡率分别为99.4%、98.25%及88.25%。用2.5%溴氰菊酯乳油制成毒绳,对舞毒蛾2~3龄虫和4~5龄幼虫进行扎毒绳试验,平均死亡率分别为96.7%及76.6%。扎毒绳田间防治示范,平均杀虫效果达91.3%。 相似文献
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栎毒蛾是板栗的主要食叶害虫,在临沂地区1年发生1代。7月份开始在树皮缝,伤口等处越夏、越冬。用柴油和米油加农药混合液,涂抹卵块防治效果达100%。 相似文献
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To clarify the effect of aerial insecticide spraying on pine wilt disease, pine wilt disease impacts was surveyed in pine stands and the damage evaluated using a logistic model. Eleven quadrats were established randomly in stands with or without aerial spraying. Aerial spraying alone did not entirely prevent the disease. Average annual mortality was lower in stands with aerial spraying than in stands without aerial spraying. Aerial spraying slowed the progress of pine wilt disease, as measured by the disease progress index. The biomass of live pine trees decreased with increased damage in stands without aerial spraying, whereas biomass was maintained in stands with aerial spraying. However, the relative basal area showed that succession of pine forests to forests dominated by other species was accelerated even in stands with aerial insecticide spraying. 相似文献
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温州市区9个公园的树木受白蚁危害比率为0~56.2%,其中翠微山公园和华盖山公园的树木受害最重。危害树木的白蚁共有2科4属5种,分别为黑翅土白蚁Odontoterms formosanus、黄翅大白蚁Macrotermtes barneyi、台湾乳白蚁Coptotermes formosanus、黄胸散白蚁Reticulitermes flaviceps和黑胸散白蚁R.chinensis。在调查的9个公园内共有29科37属41种树木受到白蚁危害,其中香樟、枫杨、构树、大叶桉、女贞等树木受害最为严重。采用草堆诱杀法及诱饵包诱杀法防治园林树木白蚁效果明显,在华益山公园,树木受害率从防治前的42.3%下降到5%左右。 相似文献
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张家口市园林树木害虫危害规律与防治对策 总被引:1,自引:0,他引:1
为全面了解张家口市区园林树木害虫的种类、分布及其危害规律,给防治提供理论依据,作者采用踏查和标准地调查的方法对张家口市区内主要街道、公园及城郊周边绿化的园林树木害虫进行了全面调查。结果表明,张家口园林树林害虫群落共有5个目20个科38种,优势种集中于天牛、蚧虫、卷叶蛾等类群及天幕毛虫、舞毒蛾等。并对不同类群的害虫提出了综合防治对策。 相似文献
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The control ofColeophora dahurica Flkv. by ULV spraying rare oil of malathior was popularized in Inner Mongolia Daxing’an Mountains in 1992–1993. The control
area was 32744.3 hm2, which was 98.2% of the suitable control area in Inner Mongolia Daxing’an Mountains and 75% of the suitable area in Inner
Mongolia respectively. Dosage was 1125 g/hm2. Control effectiveness was above 95%; the larvae density decreased from 52.5 to 0.94 per 50cm sample twig and direct economical
benefit was 3,935,420 Chinese yuan. 相似文献
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保松灵(PEM)农药防治松材线虫病试验 总被引:9,自引:5,他引:4
试验表明,用3个类型保松灵在松树不同部位作低量喷雾能有效地抑制松材线虫病危害。喷洒保松灵的松树平均枯死率为2.31%,比对照区松平均枯死率36.3%净降34%,经频率差异检验,U=16.5〉U0.01=2.58,达到极显著水平。这个结果优于日本松材线虫病地面喷雾主药MEP在象山试验的结果,而且用水量只为日本药的1/10,平均每公顷农药成本只为日本药的1/38。 相似文献