小象(虫甲)以红苕为食,把苕块啃成纵横交错的虫道,是红苕最大的敌人。这种害虫在我县部份乡村一年发生四代。它怕直射的光、喜干燥、成虫有假死性。在供食条件下,成虫寿命为9—20天,绝食情况下,寿命为4—16天。该虫主要是在春床苕种、丢失的残苕的残根中越冬。其发生程度与气候、地势、土质有密切的关系。干旱、雨少的气候发生量大,危害严重,反之则小;地势高、坡大和干爽的地方,繁殖较快,反之较慢;土粘隙大,有种于小象(虫甲)钻入产卵与生长。据试验,防治小象(虫甲)的方法有多种:①混合粉或敌百虫混合黄泥点蔸,灭虫效果最好。配药的比例是:前者1;20,后者1:200.虫的死亡率分别为85.3％、80％.②每亩用混合粉2.5公斤,拌石灰25公斤,均匀撤在苗床上,带药扦插,效果较好。再放药苕诱杀越冬成虫。插前捡残苕,用1:10的混合粉溶液浸残苕24小时,每隔4平方米1窝放3块。危害率减少83.9％,虫害指数减少 Baby elephant (pest) feed on red croaker, nibbled nibbling criss-crossing larvae, is the biggest enemy of red cantaloupe. This pest occurs in some villages in our county for four generations a year. It is afraid of direct light, like dry, adult deadly sex. Under feeding conditions, the adult life span of 9-20 days, the case of hunger strike, the life expectancy of 4-16 days. The insects are mainly in the spring bed 苕 species, lost residual 苕 residual roots in the winter. The extent of its occurrence and climate, topography, soil quality are closely related. Drought and rain less climate occurs in large quantities, serious harm, otherwise the small; high terrain, large and dry place, breeding faster, and vice versa; Soil crevice, a kind of small elephant (insect) into the Spawning and growing. According to the test, there are many ways to prevent elephant (insect A): ① mixed powder or trichlorfon mixed with yellow muddy point, the best pest control. The proportion of the drug is: the former 1; 20, the latter 1: 200. The worm mortality were 85.3%, 80% .② per acre mixed powder 2.5 kg, lime 25 kg, uniform withdrawal in the seedbed, with medicine Cutting, the effect is better. Re-release drug 苕 trap to kill overwintering adult. Plug in before picking up stubble, 1:10 mixed powder solution leaching 苕 24 hours, every 4 square meters 1 nest put three. The hazard rate decreased by 83.9% and the pest index decreased