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棉鈴虫(Heliothis armigera(Hübner))在塔里木河上游地区一年主要发生3代,少数2代或4代。从第2代起开始出現部分滞育蛹,第3代蛹绝大多数滞育,仅少数可在当年羽化。早春有效活蛹数与当年第一代的卵量成正相关。凡5—7月的降水量在3.7—20.5毫米,温湿度系数在1.52—2.14之間者,发生就重。发育速度、繁殖力与幼虫期食料有密切关系。受害作物玉米重于棉花,陆地棉重于海島棉,晚熟品种重于早熟品种。各代均为害玉米,而为害棉花从第二代起开始。六六六烟剂防治玉米上的棉鈴虫效果良好,未防治区玉米籽粒損失为防治区的2.6倍。飞机噴药粉防治玉米上的棉鈴虫比防治棉花上的效果好。
Heliothis armigera (Hübner) occurs mainly in the upper reaches of the Tarim River for three generations a year, a small number of two generations or four generations. From the second generation began to appear part of the diapause pupa, the third generation of pupal most diapause, only a few can be eclosion in the year. The number of effective pupae in early spring was positively correlated with the first generation of eggs of that year. Where May-July precipitation in the 3.7-20.5 mm, temperature and humidity coefficients between 1.52-2.14 who occurred on the heavy. Development speed, fecundity and larvae of food are closely related. Harvest crop corn is heavier than cotton, land cotton heavier than sea island cotton, late maturing varieties are heavier than early varieties. All generations are harmful to corn, and damage to cotton from the second generation onwards. The control effect of 666 tobacco bollworm on maize was good. The loss of maize grain in the non-control area was 2.6 times that of the control area. Aircraft spray powder prevention and control of cotton bollworm corn than cotton control effect.