灭菌肥Ⅰ型涂治苹果树腐烂病效果

试验于１９９２～１９９４年在山东和北京的６个地区，１４个苹果园进行。田间试验表明，用灭菌肥Ⅰ型５０倍液涂治苹果树腐烂病患处，平均治愈率可达９０％以上，比对照２％福美砷当年平均治愈率提高７．２２─２９．５１％，周年平均治愈率提高１８．０５％～３２．３９％，愈伤组织宽度增加３．０３％～２９．２３％。室内试验表明，灭菌肥Ⅰ型最低抑菌剂量１０００倍，抑菌面积可达２２８９．０６ｍｍ２。     

无公害技术在防治春尺蠖上的应用

阐述了春尺蠖的危害、发生规律及防治方法。利用糖醋盘 ,灯光诱杀成虫 ,在树干上捆绑草绳 ,喷涂毒环阻止成虫上树产卵及使用无公害生物制剂防治幼虫效果较好     

巫溪红池坝改良草地鼠类调查报告

对重庆巫溪红池坝改良草地中鼠形动物的种类进行抽样调查、室内饲养、解剖鼠胃和洞道研究，结果显示，该改良草地中有鼠形动物2目3科4种，其对草地危害方式和为害程度均不一样。提出了改良草地中鼠害的防治措施。     

泰山月观峰和索道站冲沟生态治理探讨

为保护自然生态，对泰山月观峰和索道站冲沟采取了生态治理措施，取得了良好的效果，恢复了泰山自然景现，达到了保护生态环境的目的。     

用呋喃丹防治蝼蛄试验

通过采用呋喃丹每床 (2 0m2 )施用 0、10 0、2 0 0、4 0 0g防治蝼蛄的试验 ,第一天防治效果达 79.7% ,第三天平均蝼蛄死亡 2 .3头·m-2 ,第四天很少发现死亡虫尸。试验表明 :每床施用 10 0g即可达到较好的防治效果 ;呋喃丹防治地下害虫对苗木不产生药害。     

一类挖坑机械钻头横向振动系统的最优控制问题

建立了一类挖坑机械钻头横向振动系统的数学模型,并以阻尼函数作为控制变量,研究了该系统的最优控制问题,得出了两个定理。     

电算化会计信息系统下内部控制研究

本文对会计电算化发展中存在的一些问题提出了对策与建议，并针对财会工作的自身特点，从程序控制和制度控制两个方面阐述了电算化会计信息下的内部控制方法。     

基于财务视角的企业收益内部分配管理控制模式

趋利行为使得在企业收益分配中占主导地位的股东及经营者,有可能通过盈余管理或侵蚀他人利益来增加自身利益。为了保证分配的效率和公平,防止他人利益受损,在信息不对称情况下,本文认为,需要从财务角度对企业收益的内部分配进行规范,建立基于财务视角的企业收益内部分配的管理控制模式。     

柞树害虫栎粉舟蛾的初步研究

栎粉舟蛾Femtoma ocypete(Bremer)是柞树的重要害虫之一。此虫在辽宁一年发生一代,以蛹在土中越冬。翌年7月中旬开始羽化,持续到8月中旬。羽化后即可交配产卵。7月下旬到8月下旬均有幼虫孵出。幼虫经6个龄期,于9月中、下旬入土化蛹。防治方法:8月中旬往柞树上喷洒0.025％浓度的“杀虫灵”农药,能杀死各龄幼虫,防治效果为90％左右,七天后养蚕无害。     

Sensitivity of populations ofBotrytis cinerea to triazoles,benomyl and vinclozolin

Sensitivity of field isolates (121) ofBotrytis cinerea from France (1992), Germany (1979–1992), Israel (1990) and the Netherlands (1970–1989) to the triazoles tebuconazole and triadimenol, the benzimidazole benomyl and the dicarboximide vinclozolin were tested in radial growth experiments. Resistance to benomyl (in 21 to 100% of isolates tested) and vinclozolin (in 25 to 71% of isolates tested) was common in most countries. EC₅₀s (concentrations of fungicides inhibiting radial mycelial growth ofB. cinerea on B5-agar by 50%) for tebuconazole and triadimenol ranged between 0.01–1.64 and 0.4–32.6g ml^–1, respectively, and were log-normally distributed. The variation factor (ratio between EC₅₀s of the least and most sensitive isolate tested) amounts 164 and 82 for tebuconazole and triadimenol, respectively. These values are comparable to those for azole fungicides applied in control of other pathogens. Hence, variation in sensitivity to triazoles can probably not explain limited field performance of triazoles towardsB. cinerea. Isolates from south west Germany (1992) were significantly less sensitive to tebuconazole than isolates collected earlier in Germany, Israel and the Netherlands. Such less sensitive populations may contribute to the limited field performance of DMI fungicides towardsB. cinerea. The sensitivity of isolates from south west Germany to tebuconazole was similar to that of DMI-resistant mutants generated in the laboratory. These mutants displayed stable resistance with Q-values (ratio between EC₅₀ of resistant mutant and wild type isolate) between 5 and 20. Sensitivity of field isolates and laboratory mutants to tebuconazole and triadimenol was correlated.