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棉铃虫在全国各棉区均有发生,是豫东棉区的重要害虫。在介绍棉铃虫生物学习性、发生规律、棉田发生动态的基础上,主要阐述了棉铃虫的综合防治技术,为豫东棉区棉铃虫有效防治提供技术指导。 相似文献
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南阳棉区属长江流域棉区的南襄亚区,棉铃虫的发生规律既不同于黄淮棉区,又不完全同于长江流域棉区。1992～1993年黄淮棉区棉铃虫大发生,南阳棉区却轻发生;1994年黄淮棉区、长江流域棉区棉铃虫大发生的势头得到控制,而南阳棉区却大暴发,且超常地发生了完全五代,主害代也由二代、三代演变到四代、五代,对棉花生产造成了严重的损失。 相似文献
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辽宁特早熟棉区棉铃虫发生世代研究许国庆褚茗莉田本志赵奇顾兰君赵季秋（辽宁省农科院植保所）棉铃虫（ＨｅｌｉｏｔｈｉｓａｒｍｉｇｅｒａＨüｂｎｅｒ）是棉花的一大害虫。北方棉区及特早熟棉区是棉铃虫的常发区，发生量大，危害严重。１９９２年棉铃虫特大发生，造成... 相似文献
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研究安徽省棉区棉铃虫的发生动态,探讨它的爆发原因,指出沿江、淮北两棉区棉铃虫发生规律存在明显差异,认为食料、雨量和天敌是影响棉铃虫发生的主要因子。 相似文献
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根据 1976～ 1999年六安地区棉铃虫测报资料 ,选取耕作制度、寄主作物、气候、棉田生态等相关因素 ,采用相关性普查 ,从中筛选出主导因子。采用模糊聚类分析 ,确定多因子组合对棉铃虫各世代发生期、发生量综合调节作用的量化指标 ,经历史回检可信度达 0 .7以上 相似文献
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新疆南部棉区棉铃虫发生趋势及Bt棉花的控制效率 总被引：15，自引：0，他引：15
【目的】新疆南部棉花种植区已发展成为中国棉花产业的重要基地。作为棉花生产的重要影响因素，棉铃虫具有在新疆南部猖獗危害的生物学基础。【方法】本文报道了南疆棉铃虫发生趋势及转Bt基因抗虫棉对棉铃虫控制效率的研究结果。【结果】1993～2004年对麦田一代棉铃虫幼虫数量变化的监测显示，1997年后棉铃虫的发生危害逐年上升，表明南疆粮棉混作区种植制度的改革已导致棉铃虫成为农业生产的重要害虫。2002～2004年对抗虫棉GK19（表达Cry1A杀虫蛋白）、SGK321（表达Cry1A 和 CpTI杀虫蛋白）和对照品种棉铃虫种群动态的研究显示，二代棉铃虫是南疆地区棉花的主要危害代别，抗虫棉花对幼虫的控制效率可达75%以上。在棉铃虫发生中等年份，转基因抗虫棉花可有效地控制棉铃虫的危害。【结论】鉴于棉铃虫的严重危害，南疆地区有必要发展基于Bt棉花的棉花害虫综合防治技术。 相似文献
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Studies on the Relationship between Occurrence Degree of Cotton Bollworm and Rainfall 总被引：3，自引：0，他引：3
LIU Xue-yi WANG Hong-tao GAO Wei-li FAN Xiao-jiu LI Shu-ying WEI Jin-yan CUI Su-hua WANG Hua SHEN Yu-lu ZHANG Yong. Meteorological Bureau of Luyi County Henan Province Luyi . Meteorological Bureau of Xihua County Henan Province Xihua . Huangfanqu Farmland Henan Province Fanqu 《（《农业科学与技术》）编辑部》2008,(2)
[Objective] The aim of the study is to investigate the factors causing the outbreak of cotton bollworm and to provide effective measures for controlling cotton bollworm. [Method] Based on the analysis of the data about insect and weather situation in Luyi County in 32 years,the meteorological prediction model was established for monitoring the quarterly or monthly occurrence trend of cotton bollworm. [Result] The cotton bollworm occurred slightly in the years with rainfalls of 3 months over 500 nm and severely in the years with rainfalls of 3 months less than 400 nm. The results of correlation analysis show that annual occurrence degrees of cotton bollworm and occurrence degrees of 4th generation of cotton bollworm are extremely negatively correlated with rainfall during June-August; the occurrence degrees of 3rd and 4th generations of cotton bollworm are also extremely negatively correlated with rainfall in July. [Conclusion] The occurrence of cotton bollworm in field is heavily influenced by rainfall in at its occurrence stage,moreover,the rainfall during June-August is the decisive factors influencing the occurrence of cotton bollworm. 相似文献
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《（《农业科学与技术》）编辑部》2008,(2)
[Objective] The aim of the study is to investigate the factors causing the outbreak of cotton bollworm and to provide effective measures for controlling cotton bollworm. [Method] Based on the analysis of the data about insect and weather situation in Luyi County in 32 years,the meteorological prediction model was established for monitoring the quarterly or monthly occurrence trend of cotton bollworm. [Result] The cotton bollworm occurred slightly in the years with rainfalls of 3 months over 500 nm and severely in the years with rainfalls of 3 months less than 400 nm. The results of correlation analysis show that annual occurrence degrees of cotton bollworm and occurrence degrees of 4th generation of cotton bollworm are extremely negatively correlated with rainfall during June-August; the occurrence degrees of 3rd and 4th generations of cotton bollworm are also extremely negatively correlated with rainfall in July. [Conclusion] The occurrence of cotton bollworm in field is heavily influenced by rainfall in at its occurrence stage,moreover,the rainfall during June-August is the decisive factors influencing the occurrence of cotton bollworm. 相似文献
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[目的]为进一步研究棉铃虫的发生与防治提供文献数据。[方法]基于文献计量学分析方法,以中国学术期刊电子杂志社的《中国期刊全文数据库》为数据来源,对2001～2010年我国有关棉铃虫核心期刊研究文献的年份数量、研究领域、核心期刊、文献主要产出单位情况进行统计分析。[结果]得出棉铃虫研究文献有效篇目519篇;2001～2010年我国核心期刊发表的棉铃虫相关论文数量呈逐年递减的趋势;我国农业工作者在棉铃虫研究方面,注重田间发生和防治,同时对其生态、生理和行为等方面也有所研究;《昆虫学报》为发表文献数量最多的核心期刊,其次为《中国棉花》和《昆虫知识》;文献主要产出单位是江苏省农业科学院植物保护研究所、中国科学院动物研究所等5个科研院所。[结论]为我国棉铃虫的发生和为害问题研究提供了有价值的文献数据。 相似文献
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ZHANG Yong LIU Xue-yi WANG Hong-tao GAO Wei-li FAN Xiao-jiu LI Shu-ying WEI Jin-yan CUI Su-hua WANG Hua SHEN Yu-lu ZHANG Yong 《农业科学与技术》2008,9(2)
[Objective] The aim of the study is to investigate the factors causing the outbreak of cotton boUworm and to provide effective measures for con-trolling cotton bollworm. [Method] Based on the analysis of the data about insect and weather situation in Luyi County in 32 years, the meteorological pre-diction model was established for monitoring the quarterly or monthly, occurrence trend of cotton bollworm. [Result] The cotton bnflworm oceurred slightly in the years with rainfalls of 3 months over 500 nm and severely in the years with rainfalls of 3 months less than 400 nm. The results of correlation analysis show that annual occurrence degrees of cotton bollworm and occurrence degrees of 4th generation of cotton bollworm are extremely negatively correlated with rainfall during June - August ; the occurrence degrees of 3rd and 4th generations of cotton bollworra are also extremely negatively correlated with rainfall in July. [Condusion] The occurrence of cotton bollworm in field is heavily influenced by rainfall in at its occurrence stage, moreover, the rainfall during June - August is the decisive factors influencing the occurrence of cotton bollworm. 相似文献
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[目的]探讨北疆棉区棉铃虫发生和气象条件的关系.[方法]通过对新湖垦区膜下滴灌棉田棉铃虫系统调查,结合当地气象资料研究,明确了积雪厚度与棉铃虫年发生程度的关系.[结果]建立了年发生程度与积雪厚度的数学模型Y=0.015 X~2-0.082 X+0.884;应用期距预测法对棉铃虫一代和二代高峰期进行预测,构建了两个数学模型Y_1=-0.839 X_1~2+35.742 X~1-341.685和Y_2=1.157 X_2~2-60.187 X_2+816.588.[结论]对以上三个数学模型进行回判和预测验证,准确性较高,可以作为该区棉铃虫预测预报模型使用. 相似文献
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转Bt基因棉花对新疆棉田主要害虫和天敌种群的影响 总被引：1，自引：0，他引：1
2002和2003年通过对新疆库尔勒垦区主栽转Bt基因棉(抗9)和常规棉(20-1-4) 的定点、定株调查,分析转基因对棉田主要害虫和天敌的种群数量影响.结果表明, 两类棉田主要害虫发生期、发生量存在显著差异性,但发生趋势基本一致.靶标害虫棉铃虫卵期发生量在两类棉田无差异性(P＞0.05);在幼虫的发生量上,常规棉田显著大于转Bt基因棉田( P＜0.05).非靶标害虫棉蚜、棉叶螨、牧草盲蝽象的发生量转Bt 基因棉田显著高于常规棉田 (P＜0.05),两种类型棉田中主要天敌瓢虫、草蛉、食蚜蝇、食虫蝽、蜘蛛在发生期内发生量均无显著差异性(P＞0.05). 相似文献