乐山城区结缕草草坪杂草调查初报   总被引：1，自引：0，他引：1  

吴三林  罗利群  刘瑞峰  陈封政 《安徽农业科学》2006,34(1):90-92

在2个不同季节对乐山城区20 000 m2的结缕草草坪进行了杂草调查,结果表明:乐山城区草坪主要杂草共32科76种。其中双子叶植物26科58种,单子叶植物3科15种,蕨类植物3科3种。危害较重的杂草是酢浆草、天胡荽、漆姑草、狗牙根、香附子、空心莲子草、小白酒草、马兰、剪刀草、牛筋草、早熟禾、扬子毛茛。  相似文献   

Consumption of Bark and Seeds by Voles in Relation to Habitat and Landscape Structure     

《Scandinavian Journal of Forest Research》2012,27(1):28-34

Voles cause damage in forestry by eating the bark of seedlings and the seeds of conifers. Folivorous field voles ( Microtus agrestis ), restricted to various types of grassland, are mainly responsible for damage to bark, and granivorous bank voles ( Clethrionomys glareolus ), supported by most forest environments, for the consumption of seeds. Densities of bank and field voles, consumption of bark on indigenous and experimental woody plants, and consumption of experimentally supplied seeds were measured during the vole cycle 1997-2000 in relation to three habitat and three landscape variables. Landscape variables explained field vole densities and consumption of bark to a considerable extent, while habitat variables were more adequate for densities of bank vole and consumption of seeds. Field vole populations may demonstrate a ''mass effect'', where the success of early development and dispersal from subpopulations will decide peak numbers over entire landscapes. Numbers of field voles may affect numbers of the inferior bank vole. Thus, predicting the exact location of vole damage is principally difficult.  相似文献   

Winter Browsing by Large Herbivores on Planted Deciduous Seedlings in Southern Sweden     

《Scandinavian Journal of Forest Research》2012,27(4):371-378

Deciduous seedlings are valuable for the forest industry and, at the same time, often palatable for large herbivores. Therefore, browsing on seedlings of seven deciduous tree species and on Picea abies(L.) Karst., as a reference species, was tested in a field experiment with the species presented at feeding stations. Twenty stations, each with one seedling per species, were established in each of 15 clear-cuts in southern Sweden. The planting took place in October. Depending on species, between 16 and 85% of the seedlings were browsed after one winter. The descending order, based on number of browsed seedlings, was Quercus robur L . > Alnus glutinosa (L.) Gaertn.> Fagus silvatica L.> Tilia cordata Mill.> Prunus avium L.> Betula pendula Roth> Picea abies (L.) Karst. > Fraxinus excelsior L. On 83% (range 45-100%) of the browsed seedlings the leader was damaged. On average, browsing reduced seedling hight by 32% (range 12-47%). Within species, initially taller seedlings were more often selected than shorter ones.  相似文献   

阿坝州花椒蛀干害虫调查研究   总被引：1，自引：0，他引：1  

黄强  朱顺虎  李连红  熊英  沈贤宇  潘开文 《四川林业科技》2013,(6):56-59

对阿坝州花椒人工林蛀干害虫进行了较全面的调查.结果表明：阿坝州椒树受蛀干害虫危害严重,平均危害率85.2％,全州椒树平均寿命不超过8年.蛀干害虫种类复杂,主要有嫩枝天牛、虎斑天牛、台湾狭天牛、椒树长足象鼻虫等.随着海拔的不同,蛀干害虫的分布有较大差异.低海拔区以嫩枝天牛、椒树长足象鼻虫为主,高海拔区则以虎斑天牛、台湾狭天牛为主.  相似文献   

高羊茅草坪斜纹夜蛾的发生与防治研究     

高文俊 《安徽农业科学》2013,41(13):5724-5724,5763

[目的]探究高羊茅草坪斜纹夜蛾的发生规律及药剂防治效果。[方法]于2010～2012年对池州市高羊茅草坪斜纹夜蛾的发生规律及室外防治效果进行了研究。[结果]室外药效试验研究表明,2.2%甲维盐乳油2 000倍液、30%乙酰甲胺磷1 000倍液等对斜纹夜蛾的发生有很好的防治效果。[结论]为高羊茅草坪斜纹夜蛾的控制提供了借鉴。  相似文献   

麻疯树细菌性萎蔫病研究进展     

吴跃开  李晓虹  朱秀娥 《安徽农业科学》2013,(23):9602-9604

对由青枯雷尔氏菌（Ralstonia solanacearum）引起的细菌性萎蔫病的为害特点、病原学特征、防控措施等方面进行了介绍,为该病害的监测与预防工作提供了参考.  相似文献   

切花月季西花蓟马的防治技术研究     

程洪森  马策  徐宁  马丹 《安徽农业科学》2013,(26):10609-10610,10612

[目的]探究辽宁切花月季西花蓟马的危害及防治技术.[方法]调查了辽宁地区5个切花月季品种上蓟马的危害情况,并通过形态学鉴定方法对其进行了鉴定;同时采用叶面喷施方法研究了4种蓟马专用防治药剂（5％多杀霉素悬浮剂、60 g/L乙基多杀菌素悬浮剂、铁砂掌1＋1可湿性粉剂和1.8％阿维菌素）及其组合对切花月季西花蓟马的田间防治效果.[结果]通过形态学鉴定确定了危害辽宁切花月季的害虫为西花蓟马.复配药剂5％多杀霉素悬浮剂1 500倍液＋铁砂掌可湿性粉剂l 250倍液对切花月季西花蓟马的防治效果最佳,第5天的防治效果达到92.06％;单个药剂5％多杀霉素悬浮剂1 500倍液的防治效果最佳,第3天的防治效果达到83.12％.[结论]为指导切花月季的生产及防止西花蓟马产生抗药性提供了理论依据.  相似文献   

桑盾蚧在陇南市核桃上的发生及防治     

王让军 《农业灾害研究》2019,(3):1-2

对桑盾蚧(Pseudaulacas pispentagona)在陇南市核桃上的为害情况、发生规律进行了观察研究,并在防治试验的基础上提出了综合防治措施。桑盾蚧在陇南1年发生2代,以受精雌成虫在寄主枝干上越冬,第2年5月中下旬和8月上旬进入卵孵化盛期,为药剂防治的关键时期,采取植物检疫、农业防治、人工防治、化学防治、生物防治等综合防治措施,可有效控制桑盾蚧的发生为害。  相似文献   

西甜瓜主要害虫防治技术     

郑珍蕾  刘虹伶  蒲德强  房超  蔡鹏  李跃建  王小强  伍兴隆  邓吉利  朱锆 《园艺与种苗》2019,(5):20-23

ZHENG Zhen-lei(Institute of Plant Protection,Sichuan Academy of Agricultural Sciences, Chengdu,Sichuan 610066)  相似文献   

Relative abundance and damage of some insect pests of wheat under different tillage practices in rice–wheat cropping in India     

《Crop Protection》2014

Tillage changes the physical and chemical properties of soil and can also inhibit or enhance useful and harmful fauna. In agriculture, different tillage technologies are being tried to enhance crop productivity, but little concrete information seems to exist on their effects on pest abundance and damage. To address this lack of information, sowing of wheat was investigated under different tillage systems. In order to monitor pest abundance and damage in altered tillage systems, the present studies on the relative abundance and damage due to insect pests viz. pink stem borer (PSB, Sesamia inferens Walker), termites (Microtermes obesi Holmgren and Odontotermes obesus Rambur) and root aphid (Rhopalosiphum rufiabdominalis Sasaki) were undertaken in a rice–wheat cropping system during 2010–11 and 2011–12. Pest abundance and damage was monitored in four tillage systems i.e. conventional tillage (CT), zero tillage (ZT), ZT + mulch and rotary tillage (RT) under insecticide protected and unprotected conditions. The application of insecticide did not affect root aphid incidence or termite damage. However, significant differences in PSB damage in insecticide protected (0.9%) and unprotected (1.2%) conditions were observed. The investigations demonstrated that in CT, damage by PSB (0.6%) was minimum; however termite damage (2.2%) was maximum as compared to all other tillage conditions. In ZT, PSB damage (1.4%) was maximum and root aphid incidence (3.1 aphids/tiller) was minimum in comparison to other tillage conditions. ZT + mulch resulted in inter-mediate insect pest incidence/damage; however, RT was the least effective practice which showed relatively high incidence/damage of these three insects (1.2% PSB damage, 1.9% termite damage and 5.1 aphids/tiller). The insecticide × tillage interaction indicated that insecticide application is needed only in ZT and RT for PSB management.  相似文献