CAJ | 학술논문

为了解茶丽纹象甲成虫的取食习性及为害性,以便为制订防治指标提供参考,本文开展了茶丽纹象甲成虫对茶树品种与叶位的选择性、食量等室内试验和不同虫口密度、不同品种下的茶园小区为害损失研究.结果表明,茶丽纹象甲成虫对不同品种茶梢具有明显的选择性,表现为丹桂>福云6号>黄棪.成虫期取食量(叶面积,mm2)为丹桂>黄棪>福云6号,但无显著差异.当喂饲福云6号品种茶梢时,在1~4对饲养密度下,每对成虫取食时长平均为11.8 d,在1对饲养密度下,每对成虫平均寿命为13.75±1.0 d;与老叶相比,茶丽纹象甲成虫倾向于取食新叶;茶丽纹象甲对福云6号品种的危害系数(每对成虫)为1.65 g,茶园虫口密度(x,头·m-2)与减产量(y,g·0.11m-2)的回归方程为:y = 0.0184x + 0.5611,对于亩产量100~125 kg的福云6号茶园,使用目前的防治指标(成龄投产茶园每平方米虫量在15头以上)是合适的.室内茶丽纹象甲在丹桂品种上的取食量比福云6号品种提高29.24%,在茶园虫口密度为10 头·m-2时引起茶青产量显著损失,虫口密度与减产量的回归方程为:y = 0.0665x + 0.7969,防治指标建议定为成龄投产茶园每平方米虫量10头以上.
위료해다려문상갑성충적취식습성급위해성,이편위제정방치지표제공삼고,본문개전료다려문상갑성충대다수품충여협위적선택성、식량등실내시험화불동충구밀도、불동품충하적다완소구위해손실연구.결과표명,다려문상갑성충대불동품충다소구유명현적선택성,표현위단계>복운6호>황염.성충기취식량(협면적,mm2)위단계>황염>복운6호,단무현저차이.당위사복운6호품충다소시,재1~4대사양밀도하,매대성충취식시장평균위11.8 d,재1대사양밀도하,매대성충평균수명위13.75±1.0 d;여로협상비,다려문상갑성충경향우취식신협;다려문상갑대복운6호품충적위해계수(매대성충)위1.65 g,다완충구밀도(x,두·m-2)여감산량(y,g·0.11m-2)적회귀방정위:y = 0.0184x + 0.5611,대우무산량100~125 kg적복운6호다완,사용목전적방치지표(성령투산다완매평방미충량재15두이상)시합괄적.실내다려문상갑재단계품충상적취식량비복운6호품충제고29.24%,재다완충구밀도위10 두·m-2시인기다청산량현저손실,충구밀도여감산량적회귀방정위:y = 0.0665x + 0.7969,방치지표건의정위성령투산다완매평방미충량10두이상.
The feeding selectivity to tea cultivars, leaf age and amount of consumption in laboratory conditions and yield loss under different insect density and tea cultivars in plant were investigated to understand the feeding habit ofM. aurolineatus and to provide information on economic threshold ofM. aurolineatus control. The results showed thatM. aurolineatus has declining selectivity to tea cultivars Dangui, Fuyun 6 and Huangdan. AdultM. aurolineatus consumed most food on Dangui, followed by Fuyun 6 and Huangdan but the difference is not significant. In 1~4 pairs of feeding density, the average feeding time was 11.8 days on Fuyun 6 and at one pair of feeding density, the average life span was 13.75±1.0 days. Furthermore,M. aurolineatustends to take food from young leaves. The yield loss coefficient by each pair of insectwas 1.65 g. The regression equation between insect density(x, heads per square metre of tea garden) and yield loss(y, g per 0.11m2) was y = 0.0184x + 0.5611. To achieve the target production of 100~125 kg·666.7m-2 in Fuyun 6, the current controlling threshold(more than 15 head ofMyus-a in per square metre of tea garden) is reasonable. Compared with Fuyun 6, the food consumption ofMyus-a on Dangui increased by 29.24% in laboratory conditions and significant yield loss was found when the population density ofM. aurolineatus exceeded 10 head per square meter of land in field test. The regression equation between yield loss and insect density in fields was y = 0.0665x + 0.7969, suggesting that the controlling threshold would be more then 10 heads per square meter of land for cultivar Dangui.