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[Objective]The paper was to study control effects of 12 kinds of insecticides on sugarcane pests at different periods.[Method]By field experiment,the control effects of different insecticides against sugarcane pests at planting stage,seedling stage and tillering stage of sugarcane were studied.[Result]After seedcane was treated by Chlorantraniliprole,Durivo and Seed soaking,the dead heart seedlings were significantly reduced in fields,and the control effects were87.13%±12.87%,85.22%±14.78%,82.71%±17.29%,respectively;Durivo(seedling emergence rate is 63.00%±10.30%)and Seed soaking(seedling emergence rate is 57.75%±4.50%)could also significantly enhance seedling emergence rate.After“removal-irrigation”treatment during seedling stage,the control effects of Flubendiamide(76.26%±4.31%)and Chlorantraniliprole(61.66%±6.65%)against sugarcane stem borer were significantly higher than Virtako(60.17%±7.06%),Deltamethrin(38.75%±9.88%),lambda-cyhalothrin(54.06%±6.83%),18%Dimehypo AS(37.98%±10.31%)and Dipterex(38.64%±9.34%).During tillering stage,with the increased application of 3.6%Dimehypo GR in cultivation and earthing up,the control effect on stem borer was significantly increased,and the control effect reached(72.03%±17.06%)as the dosage was 120 kg/hm2;when the dosage of phoxim exceeded 30 kg/hm2,the control effect on underground pests reached 44.00%±14.80%,and the control effect did not have significant difference as the dosage was ranged from 30kg/hm2to 60 kg/hm2.[Conclusion]The paper provided scientific basis for selection of different control methods,different chemicals and dosages against pests during different periods.
[Objective] The paper was to study control effects of 12 kinds of insecticides on sugarcane pests at different periods. [Method] By field experiment, the control effects of different insecticides against sugarcane pests at planting stage, seedling stage and tillering stage of sugarcane were [Result] After seedcane was treated by Chlorantraniliprole, Durivo and Seed soaking, the dead heart seedlings were significantly reduced in fields, and the control effects were 87.13% ± 12.87%, 85.22% ± 14.78%, 82.71% ± 17.29% (seedling emergence rate is 63.00% ± 10.30%) and Seed soaking (seedling emergence rate is 57.75% ± 4.50%) could also significantly enhance seedling emergence rate. After “removal-irrigation” treatment during seedling stage, The control effects of Flubendiamide (61.66% ± 6.65%) and Chlorantraniliprole (61.66% ± 6.65%) were significantly higher than those of Virtako (60.17% ± 7.06%), Deltamethrin (54.06% ± 6.83%), 18% Dimehypo AS (37. During tillering stage, with the increased application of 3.6% Dimehypo GR in cultivation and earthing up, the control effect on stem borer was significantly increased, and the control effect reached reached 98% ± 10.31% and Dipterex (38.64% ± 9.34% (72.03% ± 17.06%) as the dosage was 120 kg / hm2; when the dosage of phoxim exceeded 30 kg / hm2, the control effect on underground pests reached 44.00% ± 14.80%, and the control effect did not have significant difference as the dosage was ranged from 30 kg / hm2to 60 kg / hm2. [Conclusion] The paper provided scientific basis for selection of different control methods, different chemicals and dosages against pests during different periods.