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为害棉花的盲椿象在东台县主要有两种:绿盲椿象和中黑盲椿象,以绿盲椿象为害最烈.绿盲椿象一年发生5代,1～2代在早春寄主上繁殖为害,2代少数进入棉田,3代主要为害棉花.根据17年调查资料分析,3代对棉花的为害程度,主要与2代发生量、2～3代为害期间的雨量有一定关系.现以生物统计的方法,试求预测3代为害程度的方程式.1.二代发生量(百网虫数),利用苕子留种田6月上中旬每5天调查的平均值.2. 6月20日～7月20日雨量,由县气象站提供
There are mainly two kinds of blind stinkbugs infecting cotton in Dongtai county: green blind stinkbug and black blind stinkbug, most of which are damaged by green stinkbug. The green blind stinkbug occurs for 5 generations a year, 2 generations of minorities into the cotton field, 3 generations of major cotton damage.According to 17 years of survey data analysis, 3 generations of cotton damage, mainly with the second generation, 2 to 3 generations of the damage during the rainfall have some relationship now biometric , Try to predict the degree of harm of the third generation of the equation.1.Generation of the second generation (Hundreds of insects), the use of razor stay on the farm in mid-June every five days of the average survey .2 .6 20 ~ 7 The monthly rainfall of 20, provided by the county weather station