玉米螟幼虫在植株上的转移规律以及不同世代危害,对玉米产量影响程度是确定幼虫防治时期及施药部位的重要依据,我们对此进行了研究。现将结果整理报道如下。 一、幼虫在植株上转移规律 试验在本所农场早播(5月4日)和晚播(5月25日)玉米田(嫩单一号)进行。 从7月13日到8月28日,每5天进行一次剖检植株,每次每块地取样10点,每点10 Translocation of corn borer larvae on the plant and the harm of different generations, the impact on maize yield is an important basis to determine the control period and application site of larvae, which we studied. The results are now reported as follows. First, larvae in the plant on the law of transfer test early in our farms (May 4) and late sowing (May 25) corn field (tender single number). From July 13 to August 28, the plants were dissected every 5 days, with 10 samples per site, each at 10