1) ladybeetle populations
瓢虫种群
1.
The three kinds of ladybeetle have blance populations the quantity of ladybeetle populations in trans Bt gene zoophobous cotton field are higher than that in conventional cotton fields.
以常规棉品种为对照,通过对江苏沿海地区Bt棉田内瓢虫种群消长动态的调查分析,明确了龟纹瓢虫、七星瓢虫和异色瓢虫为当地棉田的优势种群,其中龟纹瓢虫占种群比例的95%以上;两类棉田内三种瓢虫各占瓢虫总虫量的分布比例相近,差异不显著;与常规棉田比较,转Bt基因抗虫棉田的龟纹瓢虫、七星瓢虫和瓢虫总量分别比常规棉田增加63 76%、1250%和66 35%,经t检验,差异达极显著水平;异色瓢虫比常规棉田减少15 38%,t检验的差异不显著。
2) Ladybugs communities
瓢虫群落
3) species of ladybirds
瓢虫种类
1.
Investigation on species of ladybirds in farmland and biological characteristics of Coccinella transversoguttata in Xining region;
西宁地区农田瓢虫种类调查及横带瓢虫生物学特性的研究
4) ladybug
[英]['leidibʌg] [美]['ledɪ,bʌg]
瓢虫
1.
Functional responses of three main ladybug preys to Uroleucon erigeronensis in fields in Henan Province;
河南省田间3种主要瓢虫对飞蓬指管蚜的捕食功能
2.
Investigation and introduction on the natural enemy ladybugs of Hemiberlesia pitysophila in Japan;
日本松突圆蚧天敌瓢虫调查与引进报告
3.
According to the investigation,there exits 22 genera and 33 species of ladybug in garden plants of Xiamen.
据调查,厦门市园林植物共有瓢虫33种,隶属于22属。
5) ladybird
[英]['leɪdibɜ:d] [美]['ledɪ'bɝd]
瓢虫
1.
Field evaluation of control efficacy of ladybirds and imidacloprid on wheat aphids;
释放天敌瓢虫和施用化学农药吡虫啉对麦田蚜虫的控制效果评价
2.
Field Evaluation of Control Efficacy of Imidacloprid,Abamectin and Ladybirds Control Wolfberry Aphids sp;
阿维菌素和天敌瓢虫对枸杞蚜虫的控制效果评价
3.
The community composition and niche of ladybirds in orchard of American apricot and plum
美国杏李园瓢虫群落组成及生态位
6) lady beetle
瓢虫
1.
Species diversity of lady beetles in the suburbs of Nanchong City, Sichuan.;
四川南充市郊瓢虫物种多样性的初步研究
2.
The present paper gives review of some characteristics of lady beetles in the biological control of aphids, based upon recent studies on ladybeetle-aphid relationship.
根据近年来对瓢虫-蚜虫相互关系的研究结果,本文综述了瓢虫在蚜虫生物防治的一些特征。
补充资料：种群增长率(见种群出生率)
种群增长率(见种群出生率)
种群增长率见种群出生率。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条