春季,随着地温的升高,地下害虫开始活动,危害麦苗及早春作物幼苗。山东省的早春地下害虫主要有蝼蛄、蛴螬、金针虫三种,其活动习性及危害症状如下: 一、蝼蛄我省以华北蝼蛄发生较为普遍,春季当20厘米深地温达到8℃左右时,越冬的蝼蛄开始上移到地表活动,地温13～16℃时,其活动最盛。因此,蝼蛄主要在麦苗返青和起身及春季苗床上发生危害。蝼 In spring, as the ground temperature increases, underground pests begin to act and endanger wheat seedlings and early spring crop seedlings. In early spring in Shandong Province, there are mainly three types of underground pests: 蝼 蛄, 蛴 螬, and golden needle insects. Their habits and hazards are as follows: 蝼 蝼 蛄 The province is prevalent in northern China. In spring, when the 20 centimeter deep ground temperature reaches about 8 ℃, Of the grubs began to move up to the surface activity, ground temperature 13 ~ 16 ℃, its most active. Therefore, 蝼 蛄 mainly rejuvenate the wheat seedlings and get up and spring seedbed harm.蝼