共查询到20条相似文献，搜索用时 15 毫秒
1.
2.
Dipl.-Biol. H. -U. Schmidt 《Journal of pest science》1987,60(2):27-31
It is reported about the experiences with the Biotrap Lockstoff-Falle für Schadinsekten AW and PW (HOECHST AG, Frankfurt) to improve plant protection prognosis against the codling moth (Cydia pomonella Busck.) and the plum fruit moth (Cydia funebrana Tr.) for allotment holders, settlers and houseowners. The flight activities of these pests were observed with pheromone traps by 19 to 27 additional voluntary assistants (allotment holders) since 1982 to support the official plant protection service in monitoring the a. m. moth species.—For a time of 20 weeks the assistants reported each monday the number of captured moth's to the plant protection office. Curves of the flight activities were based on the weekly moth captures. Drawing conclusions from the four year lasting observations, it is evident, that the main flight activity of the one generation of the codling moth lasts from the 26. to the 29. calendary week. The first generation of the plum fruit moth can be obtained during the 21. and 23. calendary week and the second one from the 30. to the 33. calendary week. The suitable time for control measures varied from year to year and was published between 21st and 23rd of June for the codling moth and between the 12th and 23rd of July for the plum fruit moth. The experiment with allotment holders as additional assistants was very successfull. 相似文献
3.
《European Journal of Forest Research》1871,15(1):479-480
4.
5.
6.
7.
8.
《European Journal of Forest Research》1869,13(1):187-190
9.
10.
11.
12.
13.
14.
15.
16.
17.
18.
19.
《European Journal of Forest Research》1857,1(12):503-514
20.