| 摘要 |
A method for controlling expansion of dominating rape pests includes release of lepidopteran egg parasite Trichogramma into rape agrocenoses. In the spring-summer period, at the beginning and in the course of mass egg-laying of females of noctuids, moths, pierids and pyralids double release of Trichogramma (Trichogramma pinto І) is carried out with an interval of 5-7 days correspondingly in an equivalent of 30 and 60 thousand of females per . No less than 25-30% of the populations of the Trichogramma are from the general pool, they are released onto the soil surface, and at the beginning of attack of the plants with bugs, gall-midges and sawflies single general treatment of the crops with mixture of the biological preparations Bicol w.p. (wettable powder), 1.0 kg/ha and Phytoverm 0.2% e.c. (an emulsion concentrate), 0.6 l/ha is carried out. |
