论文部分内容阅读
淡剑袭夜蛾是近年新发生的重要草坪害虫 ,其产卵多 ,繁殖力强 ,发生世代多 ,危害重。因此 ,利用第 1代雌蛹重、发生期和第 2代卵期准确预报其发生数量和时间 ,是防治的关键。经饲养测定 ,雌蛹重和产卵量的相关方程为 :Y=-640 .75+1 0 1 2 4 .62 X。利用变温经“直线回归”算出 :第 1代 :C=1 3.2 1± 1 .4 3(℃ ) ,K=4 0 9.9± 50 .5( DD) ,N=4 0 9.9± 50 .4 8T-( 1 3.2 1± 1 .4 3) ;第 2代卵期 C=1 3.65± 0 .58(℃ ) ,K=4 6.8± 1 .8( DD) ,N=4 6.8± 1 .8T-( 1 3.7± 0 .6) 。其结果符合实际发生情况
Light Stroke Helicoverpa armigera is an important lawn pest newly occurred in recent years, its spawning, reproductive ability, occurred more generations, endangered. Therefore, the use of the first generation female pupal weight, the second generation of eggs and the second generation of accurate prediction of the occurrence of the number and time is the key to prevention and treatment. The correlation equation of fecundity and fecundity after feeding was determined as follows: Y = -640 .75 + 1 0 1 2 4 .62 X. The temperature was calculated using the “linear regression” method: Generation 1: C = 1 3.2 1 ± 1.4 (° C), K = 40.9 ± 50.5 (DD), N = 40.9 ± 50.48 T - (1 3.2 1 ± 1 .4 3); 2nd generation egg stage C = 1 3.65 ± 0.58 (℃), K = 4 6.8 ± 1.8 (DD), N = 4 6.8 ± 1.8T- (1 3.7 ± 0 .6). The result is in line with the actual situation