除蜗灵杀螺好

除蜗灵杀螺好近年来,我省棉田蜗牛持续大发生,蜗牛咬断棉苗,造成缺苗断垅,当棉苗长到２０ｃｍ以上时,蜗牛不再构成威协。蜗牛为害蔬菜,特别是叶生蔬菜,造成菜叶缺损,粪便污染,严重影响品质。防治棉田及菜田蜗牛必须要求除蜗药剂诱集力强、见效快、持效期较长,才...     

菜田灰巴蜗牛药剂防治试验

灰巴蜗牛是我市近年在部分菜田发生为害趋于严重的有害动物。为了寻求有效防治用药,笔者先后引进国内外３种灭蜗制剂,进行试验、示范、推广应用,现将其对比试验结果报告如下：１试验设计及方法试验设２％灭旱螺颗粒毒饵（灭梭威：德国拜耳公司产）、６％密达杀螺颗粒毒...     

郧县保护地柑橘育苗蜗牛发生规律及综合防治措施

蜗牛,属软体动物,腹足纲,柄眼目,蜗牛科,蜗牛发生种类很多。湖北省郧县属亚热带温暖湿润季风气候,而危害柑橘、蔬菜主要以灰巴蜗牛,同型蜗牛为主要优势群。近年来,郧县以塑料大棚为主的柑橘容器育苗和蔬菜保护地面积逐年扩大,为蜗牛的生长繁育提供了光、温、湿环境和充足食物源,造成蜗牛对柑橘苗木和各种蔬菜的为害逐年加重,其为害严重,发生面积大,直接影响保护地柑橘容器苗质量和蔬菜的产量、品质。     

枣庄地区农田蜗牛的发生为害及综防对策

2006年以来,蜗牛在枣庄市为害不断加重,在部分地区和田块造成农作物较大减产和经济损失.据调查,本地区发生为害的蜗牛主要是灰巴蜗牛[Bradybaena ravida(Benson)]和同型巴蜗牛[Bradybaena similaris(Ferussac)].近年来笔者对蜗牛在本地区的发生、为害情况进行了调查,并对防治技术进行了探索.     

栾川菜田甜菜夜蛾的发生条件与防治

近年来甜菜夜蛾[Spodoptera exijua(Hühner]在栾川县菜田普遍发生,并且有逐年加重的趋势。近几年全县菜田发生面积均在3.5hm2以上,局部地区时有蔬菜被吃光的现象发生。     

江汉平原棉田蜗牛的发生规律及防治对策

通过近几年对棉田蜗牛的观测调查分析,基本弄清了江汉平原棉田蜗牛的发生规律,蜗牛一年发生1代,每年有2次活动为害盛期,第1次在4~5月份,第2次在9月份,并对近几年棉田蜗牛发生较重的原因进行了分析,提出了综合防治的对策。     

蔬菜田蜗牛的发生与防治现状及分析

蜗牛是为害蔬菜的重要害虫。介绍蔬菜田常见蜗牛的种类、形态、生物学特性、发生与环境条件的关系,并采取综合防治措施以减轻蜗牛的为害。     

四川农田蜗牛的发生规律及其综合防治措施

近年来,蜗牛在四川省的发生为害日趋严重,其主要为害苗期的大田作物。通过多年对同型巴蜗牛和灰巴蜗牛的生物学特性、生活习性和发生条件进行的田间和室内调查研究,初步掌握了其发生规律,探索出了有效的综合防治措施。     

蔬菜保护地蜗牛发生特点及无公害综防技术

近年来随着农业种植业结构的调整,昆山市以塑料大棚为主的蔬菜保护地面积逐步扩大,目前全市种植面积已达1157.5hm2。由于蜗牛是喜阴暗、潮湿环境的软体动物,多数蔬菜保护地的光、温、湿环境较有利其生长繁殖。因此,蜗牛对各种蔬菜的为害逐年加重。到2005年,全市保护地蜗牛发生面积已达465.2hm2,蜗牛已成为本地区保护地蔬菜上的主要有害生物。近年来,我们对蔬菜保护地上蜗牛的发生为害情况进行了观察与调查,基本摸清了其发生、为害特点,提出并组织实施了无公害综合防治技术措施,有效地控制了蔬菜保护地蜗牛的大面积严重为害。1发生为害特点本…     

胶东蔬菜田蜗牛发生规律及防治技术

蜗牛属软体动物,过去主要发生在南方水田。近年来,随着胶东地区蔬菜面积的增加和大量采用冬暖式大棚生产,该虫已由次要有害生物上升为主要有害生物。莱阳市发生面积超过1200hm2,其中莱阳市古柳镇后赵疃村发生尤为严重,该区发生面积5hm2,蜗牛密度5～100头/m2,蜗牛株率达20%～60%,主要为害韭菜、莴苣、大白菜、芹菜等,造成蔬菜的减产和产品的污染,大大降低了蔬菜的食用价值和商品价值。经调查,为害种为同型巴蜗牛犤Bradybaenasimilaris(Férussac)犦。为解决蜗牛为害,笔者于2000年3月开始,经过3a的研究,基本摸清了蜗牛在本市的发生为害规律及…     

赫氏真厚螺的检疫鉴定

赫氏真厚螺Euhadra herklotsi是一种重要的园艺有害生物。本文采用贝壳形态、生殖系统解剖和分子生物学相结合的方法对福建口岸截获的一种蜗牛进行检疫鉴定, 结果表明, 该蜗牛为赫氏真厚螺, 并与近似种的形态鉴别特征进行了比较, 讨论了蜗牛序列比对鉴定方法的适用性, 为国境口岸防御该蜗牛的入侵提供了科学依据。     

1977 British Crop Protection Conference —Pests and Diseases,Brighton, November 1977

Abstract

The golden apple snail, Pomacea canaliculata (Lamarck, 1822) (Mesogastropoda: Pilidae), has recently been introduced to several Asian countries where it has unexpectedly developed into a pest of rice. Reasons for the introduction as well as the economic and ecological impact of the snail are described. Most farmers have resorted to chemical control, with implications for human health and the environment. Integrated snail management practices are summarized including the use of the snail as a valuable aquatic resource. It is concluded that research on control strategies is urgently needed but requires sound knowledge of the ecology of the snail in its natural habitat.     

Influence of common carp on apple snail in a rice field evaluated by a predator - prey logistic model

The hypothesis that common carp can be used for the control of apple snails in rice fields was tested experimentally. In a rice field, 12 plots of 4 2 5 m were set and enclosed by plastic walls to prevent snail emigration and immigration. The experiment continued from June to September. Three replicated treatments were used for the plots: zero, four and 12 carp were released, giving carp densities of 0.0, 0.2 and 0.6 m^?2, respectively. Snail densities were estimated by the Jolly-Seber mark-recapture method. Newly laid egg masses were counted and measured for size, and hatching was monitored. The numbers of eggs per egg mass (y) were estimated using a regression equation obtained from the product of the maximum length and width of the egg mass (x): y =0.10x^1.24. Using these measures and the monthly mean hatching rate obtained from eggs laid in two outdoor aquaria from April to September, the number of hatched eggs was used to estimate the birth rate over a given time. A logistic model incorporating these estimates revealed that the snail population proliferated only in the zero-carp plot throughout the experiment. The study, together with other reports on snail longevity, predicts that a snail population would be eliminated in 2 years at a stocking density of 2000 carp hectare^?1, if no immigration of the snail occurred.     

武平县松树3种主要害虫的发生与防治

总结武平县近3年来马尾松毛虫、松墨天牛和萧氏松茎象3种松树主要有害生物的发生、分布与危害特点,分析提出各种害虫的综合防控措施与对策,为进一步保护森林资源、建设武平现代林业提供参考。     

In vitro-Untersuchung einer möglichen fungistatischen Wirkung des Sekrets der Weinbergschnecke (Helix pomatia,Helix aspersa) auf Botrytis cinerea

In viticulture practices, technical cultivation practices and application of fungicides, specifically named botryticides, are important to control the grey mold, Botrytis cinerea. While conventional disease control is based upon applications of fungicides, options for controlling of grey mold in organic viticulture is limited. Resistance of the fungus and multiple drug resistance (MDR) require development of new disease control strategies. In vivo observation showed a reduced grey mold infection of grapes if covered with slime from garden snail. Hence, snail slime, commercial lectin (Helix aspersa agglutinin, HAA) from garden snail and bacteria isolated from snail slime were tested for antifungal or antagonistic activities against B. cinereain vitro. Furthermore, fluorescein isothiocyanate labeled Helix-lectin (FITC-HPA) was used to detect terminal N?acetyl-galactosamine residues (GalNAc) on fungal cell wall surface. In our experiments, neither slime (after sterile filtration) nor commercial lectin nor slime bacteria were found to affect spore germination and mycelial growth. Binding of lectin was found to depend on media and age of the fungal mycelium.     

图书馆尘螨危害及其防控措施

对图书馆尘螨特征、分类地位、主要种类、习性,发生与危害作简要介绍,并提出图书管理人员有效防控尘螨的3个有效方法。     

2017年玉米重大病虫害发生特点和原因分析

本文总结了2017年我国玉米病虫害发生概况,重点分析了亚洲玉米螟、二点委夜蛾、黏虫、棉铃虫以及大斑病、南方锈病等近年玉米上发生为害明显的重大病虫害的发生特点,分析讨论了虫源基数、天气条件、种植制度以及品种抗性和防控水平等因素对玉米病虫害发生的影响。     

云南文山葡萄害虫—黑足厚缘肖叶甲的发生情况及防控建议*

2009年作者首次发现黑足厚缘肖叶甲［Aoria nigripes（Baly）］在云南省文山州大面积发生,严重为害葡萄。本文报道了该虫目前的发生现状及其成虫、卵、幼虫、蛹的形态特征,寄主范围,在国内外的地理分布,生活史,生物学特性等,并提出了防控建议。     

我国稻粒黑粉病的研究进展

本文扼要回顾了我国对水稻稻粒黑粉病的研究情况,对稻粒黑粉病菌的分类、侵染、生物学特性,稻粒黑粉病的危害症状,发生流行规律,及综合防治等方面进行了综述。     

2003年江苏省稻纵卷叶螟特大发生原因及其治理对策

2003年稻纵卷叶螟在江苏稻区特大发生。在总结其发生特点的基础上,分析特大发生的原因,主要与成虫迁入虫量大、气候及苗情适宜、残留虫量基数高、自然控制作用弱等因素有关。并根据各地防治工作实践,提出要加强监测,准确把握防治适期,科学用药等治理措施。