›› 1980, Vol. 16 ›› Issue (zk): 42-50.
• 论文及研究报告 • Previous Articles Next Articles
Hu Zhong-lang,Dang Xin-de,Zhang Ping-fa,Zhao Ying-qi,Zhao Yan-qin
Received:
Revised:
Online:
Published:
Abstract: This insect occurs throughout the regions where the hosts grow in Shensi Province, but outbreaks only occurs in certain parts of them. Young trees of Pinus tabulaeformis, P. armandi and P. massonixna are severly attacked. There is one generation per year in Shensi Province. Winter is spent as full-grown larvae in silken cocoons in the litter or below the surface of soil. Many soecies of natural enemies have been collected, of which 10 belong to bracoidae, ichneumonidae and trichogrammatidae. The parasitism of larvae and pupae is about 40 per cent. The results of experiments showed that fenitrothion, monocrotophos and parathion were very effective for the control of the larvae. The appication of ultra-low-volume technique in the control of this pest is recomerded.
Hu Zhong-lang;Dang Xin-de;Zhang Ping-fa;Zhao Ying-qi;Zhao Yan-qin. A PRELIMINARY STUDY OF THE PINE NEEDLE TORTRIX (EPINOTIA (PANOLIA) RUBIGINOSANA HERRICH-SCHAFFER)[J]. , 1980, 16(zk): 42-50.
0 / / Recommend
Add to citation manager EndNote|Reference Manager|ProCite|BibTeX|RefWorks
URL: http://www.linyekexue.net/EN/
http://www.linyekexue.net/EN/Y1980/V16/Izk/42