METHOD FOR PROTECTING VEGETABLE CROPS FROM HARMFUL INSECTS

摘要

A method for protecting vegetable crops from harmful insects such that in period of the beginning of egg-laying of lepidopterous pests double settling of Trichogramma (Trichogramma pintoi Voeg.) is carried out, in equivalent of 50 thousand of individuals/ha, and in the period of the beginning and mass pupation of noctuids double cultivation of row spacings with an interval of 7-10 days for a depth of 5-7 cm is carried out. In addition in the period of appearance of caterpillars of the third and elder ages double settling of the ectoparasite Habrobracon hebetor Say. is carried out with an interval of 8-10 days out in equivalent of 450-500 of individuals/ha.