Jinnian Zhao,Hui Huang. STUDIES ON THE INJURIOUS CHARACTERISTICS AND ITS DENSITY ESTIMATE OF THE LARVAE OF DIORYCTEIA YIAI[J]. Scientia Silvae Sinicae, 1997, 33(3): 247-251.
The injuring rate of Dioryctria yiai 1、2-year-old cone; male inflorescence; 3.shoot"
Fig.1
Fig.2
Longitudinal section of damagedcone"
Fig.2
Fig.3
The vertical distribution of the damaged rate of male inflorescence and 2-year-old cone The damaged rate of 2-year-old cone The damaged rate of male inflorescence"
Fig.3
Fig.4
The vertical distribution of larvae"
Fig.4
Fig.5
The ralationship between the male inflorescence rate and the damaged rate of 2-year-old cone"
Fig.5
Fig.6
The relationship between the number of overwintered larvae and the male inflorescence rate"
