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1979年黑龙江省肇源县28.1万亩草原发生土蝗,其中11万亩采籽草场受白边雏蝗Chorthippus albomarginatus(De Geer)严重为害。羊草Anurolepidium chinense(Trin)Kitagawa轻者叶片被咬得残缺不全,重者叶片被全部食光,咬断生长点,只剩一茬。虫口密度一般在100—150头/米~2,经飞机撒药防治,迅速扑灭了为害。 经初步调查,白边雏蝗的分布发生与牧草种类有直接关系。在小拉哈泡等纯羊草草原,一般只受白边雏蝗为害,绝少见到其它蝗种加害。哈布他海、波尔诺两个蝗区情况雷同;在各
In 1979, Ziyuan County, Heilongjiang Province, 28.1 hectares of grassland occurred locusts, of which 110,000 hectares of mining grassland by Chorthippus albomarginatus (De Geer) serious damage. Leymus Anurolepidium chinense (Trin) Kitagawa light leaves were bitten incomplete, heavy leaves were all light, biting off the growth point, leaving only a crop. Insect population density is generally 100-150 head / m ~ 2, spraying the aircraft control, quickly extinguished the damage. After a preliminary investigation, the distribution of Chorthippian locust occurs directly related to the species of forage. In a small Lahad, etc. pure Leymus meadows, generally only by the white-borne Chingchu harm rarely see other locust species damage. Habib Thayer, Porphyry two locust areas in the same situation; in each