Study on the sampling technique of Pineus armandicola and the relationship between the occurrence of it and environmental factors was conducted in 222 Forest Farm, Dongchuan, Yunnan Province. It was found that the bes...Study on the sampling technique of Pineus armandicola and the relationship between the occurrence of it and environmental factors was conducted in 222 Forest Farm, Dongchuan, Yunnan Province. It was found that the best sampling site is the middle east of the crown canopy. The best sampling number is calculated as the model: N =127.25/ +1.87. Using Latin square orthogonal design, the relationship between the occurrence of Pineus armandicola and environmental factors was revealed. Among the investigated environmental elements, the most important key factor to influence the variance of population density is the tending status of the woods. Other key factors are successively slope direction, elevation and canopy density. Advice on how to control Pineus armandicola is also given.展开更多
为了研究华山松球蚜(Pineus armandicola)的生物学特性以及预测预报规律,本研究采用室内饲养与林间观察相结合的办法,记录了华山松球蚜形态特征、生活史及种群变化特征,比较了20℃、25℃、30℃和35℃4个不同温度下各虫态的发育历期。结...为了研究华山松球蚜(Pineus armandicola)的生物学特性以及预测预报规律,本研究采用室内饲养与林间观察相结合的办法,记录了华山松球蚜形态特征、生活史及种群变化特征,比较了20℃、25℃、30℃和35℃4个不同温度下各虫态的发育历期。结果表明:华山松球蚜在大箐梁子1年11代,春夏季平均30 d 1代,秋冬季35 d 1代,世代重叠。在35℃处理下,各虫态的发育历期显著低于其他3个温度(P<0.05);而夏季(6—8月),卵、若虫和无翅成蚜3个虫态的数量显著高于其他3个季节(P<0.05)。华山松球蚜产卵期与毛叶蔷薇(Rosa mairei)、桤木(Alnus cremastogyne)、荞麦(Fagopyrum esculentum)物候之间关系密切。展开更多
文摘Study on the sampling technique of Pineus armandicola and the relationship between the occurrence of it and environmental factors was conducted in 222 Forest Farm, Dongchuan, Yunnan Province. It was found that the best sampling site is the middle east of the crown canopy. The best sampling number is calculated as the model: N =127.25/ +1.87. Using Latin square orthogonal design, the relationship between the occurrence of Pineus armandicola and environmental factors was revealed. Among the investigated environmental elements, the most important key factor to influence the variance of population density is the tending status of the woods. Other key factors are successively slope direction, elevation and canopy density. Advice on how to control Pineus armandicola is also given.
文摘为了研究华山松球蚜(Pineus armandicola)的生物学特性以及预测预报规律,本研究采用室内饲养与林间观察相结合的办法,记录了华山松球蚜形态特征、生活史及种群变化特征,比较了20℃、25℃、30℃和35℃4个不同温度下各虫态的发育历期。结果表明:华山松球蚜在大箐梁子1年11代,春夏季平均30 d 1代,秋冬季35 d 1代,世代重叠。在35℃处理下,各虫态的发育历期显著低于其他3个温度(P<0.05);而夏季(6—8月),卵、若虫和无翅成蚜3个虫态的数量显著高于其他3个季节(P<0.05)。华山松球蚜产卵期与毛叶蔷薇(Rosa mairei)、桤木(Alnus cremastogyne)、荞麦(Fagopyrum esculentum)物候之间关系密切。