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1.沟金针虫需2年以上完成一代生活史。越冬成虫2月下旬出土,3月中旬至4月中旬为活动盛期,产卵在1至2寸表土内,卵于5月初孵化,卵期为5至8星期。老熟幼虫8月下旬开始化蛹。9月中旬起羽化,蛹期约2星期。成虫羽化后即行越冬。 2.越冬幼虫2月底至3月中旬开始向表土活动(10厘米处地温8—12℃左右),3月中旬及4月全月是为害盛期(80％以上幼虫集中在1至2寸之表土内),8月至12月表土之幼虫密度极小(仅有虫1.2—6.8％),不致为害成灾。 3.沟金针虫之天敌除一种壁虱(Cheyletus sp.)和一种蜘蛛及蚂蚁外,尚有寄生菌2种,具中一种经鉴定为冬虫夏草(Cordyceps sp.)之一种。 4.小麦整地时适当深犁(5—7寸)并精耕细作能毁杀大部分蛹体及成虫,并可将幼虫翻上来供鸟类捕食(9,10月间97％老熟幼虫,在5—7寸土内化蛹及羽化,同时88％幼虫分布于1—7寸土内)。此外以芝麻与豆类为小麦前作及夏季休间结合翻耕曝晒亦能减少虫害损失。 5.沟金针虫在河南的主要为害期系在春季,所以早春於麦行间耩666毒土或毒沙以毒杀向表土上升之幼虫是值得继续研究的。
1. Gutter need more than 2 years to complete a generation of life history. Overwintering adults unearthed in late February, mid-March to mid-April for the peak activity, spawning in 1 to 2 inches of surface soil, eggs hatch in early May, the egg period is 5 to 8 weeks. Mature larvae start pupation in late August. Emergence in mid-September, pupal period of about 2 weeks. Adults will be overwintering after eclosion. 2. Overwintering larvae began to act on the topsoil from the end of February to mid-March (about 8-12 ℃ of ground temperature at 10cm), and mid-March and April of the same month (more than 80% of the larvae concentrated in 1-2-inch Topsoil), the density of topsoil larvae is extremely small (only 1.2-6.8% of the worms) from August to December, so as not to cause harm. 3. Natural enemies of Goneworm Except for a tick (Cheyletus sp.) And a spider and ants, there are two kinds of parasites, with a identified as Cordyceps sinensis (Cordyceps sp.) One. 4. The wheat is properly plowed (5-7 inches) during land preparation and tillage can kill most of the pupae and adults, and the larvae can be turned over for bird prey (97% of mature larvae in September and October, at 5 -7-inch soil internalization pupa and eclosion, while 88% of larvae distributed in 1-7 inch soil). In addition to sesame seeds and beans for the wheat before the summer break combined with tillage exposure can also reduce pest losses. 5. Glad to kill worms in Henan, the main period of damage in the spring, so in early spring in the wheat between 耩 666 toxic soil or poisonous sand to poison the larvae rising to the topsoil is worth further study.