在栽培治螟中,如何确定秧苗的安全移栽日期,适当调节水稻的发育速度;在药剂治螟中,如何正确期分防治对象田,做到重点挑治,集中消灭;其主要关键在于彻底摸清螟卵的田间分布规律。1963年,我们在本院农场选择了涂家(包括试验站)和北岗二个生产大队,对三化螟卵块田间分布情况进行系统调查(第一代 How to determine the safe transplanting date of the seedling and how to regulate the growth rate of the rice properly in the cultivation and control of the borer; Find out the distribution of borer eggs in the field. In 1963, we selected Tujia (including the experimental station) and two production units at Beigang to conduct a systematic investigation of the distribution of the eggs of the stem borer (Pythium) in the field of our hospital (the first generation