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本文介绍了甘蔗害虫及其天敌种类,指出生物防治在甘蔗害虫综合防治中的重要性。从1981—1984年,在1140亩至11万亩多的大面积蔗田中,采取了综合防治措施,使综防区甘蔗钻心虫枯心苗率压到1.57％(对照区为7.83％),生虫节率压到3.01％(对照区为10.35％),枯鞘株率压到3.48％(对照区为8.30％);蔗龟枯心苗率压到1.11％,(对照区为3.49％),甘蔗绵蚜虫百叶有蚜率压到0.017％—0.44％,比对照区降低72.91—97.48％,每亩增加有效茎763株,产量2.289斤。农药用量减少,农药成本比对照下降85.53％,劳动力下降64.95％。综防区比对照区的蜘蛛增加2.47倍;隐翅虫增加3.93倍;蠼螋蚂蚁增加3倍。蔗茎六六六含量比对照区减少34.48％—63.41％。蔗田土壤六六六含量减少56.16％—61.74％。收到了较大的经济效益,生态效益和环境保护效益。实践证明:在综合防治中注意协调生物防治和化学防治关系,注意保护天敌,充分发挥自然天敌在蔗田中抑制多种害虫作用。对多种害虫可逐步达到自然防治的目的。
This paper introduces the species of sugarcane pests and their natural enemies, and points out the importance of biological control in the comprehensive control of sugarcane pests. From 1981 to 1984, comprehensive control measures were taken in a large area of 1140 mu to 110,000 mu of sugarcane fields so as to make the rate of dry core seedling of caterpillar fungus wormhole to 1.57% (control area: 7.83%), The rate of stress was 3.01% (control area: 10.35%), and the rate of dead sheath strain was 3.48% (control area: 8.30%). The rate of seedling of sugarcane was 1.11% (control area: 3.49% The aphids in the cotton aphid were pressured to 0.017% -0.44%, which was 72.91-97.48% lower than that in the control area. There were 763 effective stems per acre and the yield was 2.289 kg. The amount of pesticides decreased, the cost of pesticides decreased by 85.53% compared with the control, and the labor force decreased by 64.95%. Compared with the control area, the spider in control zone increased by 2.47 times; the parasitic flies increased by 3.93 times; the stinkbug ants increased by 3 times. Cane six six six content than the control area decreased 34.48% -63.41%. The content of Cesarean content in cane field decreased 56.16% -61.74%. Received a larger economic, ecological and environmental benefits. Practice has proved that in the comprehensive prevention and control, attention should be paid to coordinating the relationship between biological control and chemical control, paying attention to protecting natural enemies and giving full play to the role of natural enemies in inhibiting various pests in the cane field. For a variety of pests can gradually achieve the purpose of natural control.