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沿淮淮北地势平坦低洼,历史上是小麦吸浆虫发生危害的老窝。80年代以来,再度回升,给小麦丰产丰收带来了严重威胁。为掌握幼虫在土内发育动态,每年必须作大量的系统淘土工作,费工费时。 小麦吸浆虫与其他生物一样,生长发育受外界环境影响,自初春开始到成虫羽化出土,不同虫态阶段发育,势必与当地一定的物候相吻合,如能通过物候预测其在土内的变化,则可大大减少海土工作量。基于这种指导思想,近年在本县系统淘土剥查虫态发育进度的同时,留心观察记载了自然界中生物发育生发情况(见表),发现每当早春气温回升,大地解冻、沟塘无冰,河柳芽苞萌动时,越冬休眠体内的幼虫已开始破茧活动;
Huaibei north along the flat low-lying, historically wheat midge on the hazards of nest. The rise again since the 1980s posed a serious threat to the bumper harvest of wheat. In order to grasp the developmental dynamics of larvae in the soil, a great deal of systematic excavation work must be done each year, which takes time and labor. Wheat midge and other organisms, growth and development by the external environment, since the early spring to emergence of adult emergence, development of different stages of the worm is bound to coincide with a certain local phenology, such as through the phenological prediction of its changes in the soil, then Can greatly reduce the workload of the sea. Based on this guiding principle, in recent years, the progress of exploiting pest in the system of peat mulching in this county has been carefully observed and recorded, and the development and development of the biology in nature has been recorded (see table). It was found that when the temperature rose in early spring and the earth was thawed, Ice, river bud bud budding, overwintering dormant body larvae have begun to break cocoon activity;