突背蔗龟Alissonotum impressicolle Arrow是甘蔗的主要害虫之一。其成虫和幼虫取食蔗根和蔗茎基部,严重为害时造成整片植株干枯。广东省红旗华侨农场1980年种蔗面积14,200亩,为害面积达3,078亩,蔗苗平均枯心率为9.28％,降低糖份的甘蔗15,205吨,不能进糖厂的干枯蔗3,315吨,损失巨大。过去长期采用六.六.六等化学农药进行防治,造成环境污染,蔗龟抗药性提高,甚至使甘蔗生长受到抑制。目前采用呋喃丹防治,效果虽好,但使用成本高。 1981年,我们试用昆虫寄生性线虫对突背蔗龟幼虫、预蛹、蛹和成虫进行室内毒杀及田间小区防治试验,取得了初步的效果,现将结果整理如下。 Alstonotum impressicolle Arrow is one of the major pests of sugarcane. Its adult and larvae feed on sugarcane roots and cane stems, causing serious damage to the whole plant dry. Hongqi Overseas farms in Guangdong Province in 1980, an area of ​​14,200 acres of cane, the damage area of ​​3,078 acres, cane seedlings withered average rate of 9.28%, 15,205 tons of sugarcane sugar to reduce the sugar cane plant can not be dried 3,313 tons, a huge loss. Over the past long-term use of 6.6 Six chemical pesticides to prevent and control, resulting in environmental pollution, enhance resistance of caterpillars, or even inhibited the growth of sugarcane. The current use of carbofuran control, the effect is good, but the use of high cost. In 1981, we tested the insect parasitic nematodes succulent on suckers turtle larvae, pre-pupae, pupae and adults indoor poisoning and field control trials, and achieved initial results, the results are summarized below.